UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

(Mark One)

[X]      ANNUAL  REPORT  PURSUANT  TO  SECTION  13 OR  15(d)  OF THE  SECURITIES
         EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2002
                                       OR
[_]      TRANSITION  REPORT  PURSUANT  TO SECTION 13 OR 15(d) OF THE  SECURITIES
         EXCHANGE ACT OF 1934 For the transition  period from  _____________  to
         _____________

                         Commission file number: 0-13807

                            CABLE TV FUND 12-B, LTD.
             (Exact name of registrant as specified in its charter)


               Colorado                                 84-0969999
- --------------------------------------     ------------------------------------
         State of organization               (IRS Employer Identification No.)

        c/o Comcast Corporation
          1500 Market Street,
      Philadelphia, PA 19102-2148                     (215) 665-1700
- --------------------------------------     ------------------------------------
(Address of principal executive office          (Registrant's telephone no.
             and Zip Code)                         including area code)

        Securities registered pursuant to Section 12(b) of the Act: None
           Securities registered pursuant to Section 12(g) of the Act:
                         Limited Partnership Interests

Indicate  by check  mark  whether  the  registrant,  (1) has filed  all  reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrants  were  required to file such  reports),  and (2) has been subject to
such filing requirements for the past 90 days:


             Yes  X                                         No
                -----                                         ------

Aggregate  market  value  of the  voting  stock  held by  non-affiliates  of the
registrant: [Not Applicable]

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of  Regulation  S-K  (ss.229.405)  is not  contained  herein,  and  will  not be
contained,  to the  best of  registrant's  knowledge,  in  definitive  proxy  or
information  statements  incorporated by reference in Part III of this Form 10-K
or any amendment to this Form 10-K. [X]

                    DOCUMENTS INCORPORATED BY REFERENCE: None





                                         CABLE TV FUND 12-B, LTD.
                                       2002 FORM 10-K ANNUAL REPORT
                                            TABLE OF CONTENTS


                                                  PART I



                                                                                                 
Item 1    Business.................................................................................    1
Item 2    Properties...............................................................................    1
Item 3    Legal Proceedings........................................................................    1
Item 4    Submission of Matters to a Vote of Security Holders......................................    3


                                                 PART II

Item 5    Market for the Registrant's Common Stock and Related Security Holder Matters.............    3
Item 6    Selected Financial Data..................................................................    3
Item 7    Management's Discussion and Analysis of Financial Condition and Results of Operations....    4
Item 8    Financial Statements.....................................................................    4
Item 9    Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.....   16


                                                 PART III

Item 10   Directors and Executive Officers of the Registrant.......................................   16
Item 11   Executive Compensation...................................................................   16
Item 12   Security Ownership of Certain Beneficial Owners and Managers.............................   16
Item 13   Certain Relationships and Related Transactions...........................................   17
Item 14   Controls and Procedures..................................................................   17
Item 15   Exhibits, Financial Statement Schedules and Reports on Form 8-K..........................   17

SIGNATURES.........................................................................................   18
CERTIFICATIONS.....................................................................................   19



     This Annual  Report on Form 10-K is for the year ended  December  31, 2002.
This Annual Report  modifies and supersedes  documents filed prior to the filing
of this Annual Report. The Securities and Exchange Commission (the "SEC") allows
us to "incorporate by reference" information that we file with them, which means
that we can disclose important information to limited partners by referring them
directly to those documents. Information incorporated by reference is considered
to be part of this Annual Report. In addition, information that we file with the
SEC in the future will automatically update and supersede  information contained
in this Annual  Report.  Certain  information  contained  in this Annual  Report
contains  "forward-looking   statements"  within  the  meaning  of  the  Private
Securities Litigation Reform Act of 1995. All statements,  other than statements
of historical  facts,  included in this Annual  Report that address  activities,
events or  developments  that we or the  General  Partner  expects,  believes or
anticipates  will or may occur in the  future  are  forward-looking  statements.
These  forward-looking  statements  are based upon certain  assumptions  and are
subject to risks and  uncertainties.  Actual  events or results  may differ from
those  discussed  in the  forward-looking  statements  as a  result  of  various
factors.





                                     PART I.
ITEM 1. BUSINESS

     The Partnership. Cable TV Fund 12-B, Ltd. (the "Partnership") is a Colorado
limited  partnership  that was formed pursuant to the public offering of limited
partnership  interests in the Cable TV Fund 12 Limited  Partnership Program (the
"Program").  Comcast Cable Communications,  Inc., a Delaware corporation, is the
General Partner of the Partnership (the "General Partner").  Cable TV Fund 12-C,
Ltd.  ("Fund  12-C")  and  Cable TV Fund  12-D,  Ltd.  ("Fund  12-D")  are other
partnerships that were formed pursuant to the Program. In 1986, the Partnership,
Fund 12-C and Fund  12-D  formed a  general  partnership  known as Cable TV Fund
12-BCD Venture (the  "Venture"),  in which the Partnership  owned a 9% interest,
Fund  12-C  owned  a 15%  interest  and  Fund  12-D  owned a 76%  interest.  The
Partnership  and the  Venture  were  formed  for the  purpose of  acquiring  and
operating cable  television  systems.  The Partnership and the Venture no longer
own any cable  television  systems.  The  Venture  was  liquidated  in 2000 and,
therefore,  the  Partnership  had no  investment  in the Venture at December 31,
2002.  The  Partnership  currently  conducts no operations and is expected to be
dissolved when the remaining litigation against it is concluded.

     General Partner. On April 7, 1999, Comcast Holdings  Corporation  (formerly
Comcast  Corporation)  ("Comcast")  completed the  acquisition  of a controlling
interest in Jones  Intercable,  Inc.  ("Jones  Intercable"),  the  Partnership's
general  partner  until  March 2, 2000.  In  December  1999,  Comcast  and Jones
Intercable  entered into a definitive merger agreement pursuant to which Comcast
agreed to acquire  all of the  outstanding  shares of Jones  Intercable  not yet
owned by Comcast.  On March 2, 2000,  Jones  Intercable was merged with and into
Comcast JOIN Holdings,  Inc., a wholly owned subsidiary of Comcast.  As a result
of this  transaction,  Jones  Intercable  no  longer  exists  and  Comcast  JOIN
Holdings,  Inc. continued as the surviving  corporation of the merger. On August
1, 2000,  Comcast JOIN  Holdings,  Inc.  was merged with and into Comcast  Cable
Communications,  Inc.  ("Comcast  Cable"), a wholly owned subsidiary of Comcast.
Comcast Cable is now the General Partner of the Partnership.  References in this
Annual  Report to "the  General  Partner"  refer to Comcast  Cable.  The General
Partner   shares   corporate   offices  with  Comcast  at  1500  Market  Street,
Philadelphia, Pennsylvania 19102-2148.

ITEM 2. PROPERTIES

     As of December 31, 2002,  neither the Partnership nor the Venture owned any
cable television systems.


ITEM 3. LEGAL PROCEEDINGS

     Litigation  Challenging  Jones  Intercable's  Acquisitions of Certain Cable
Systems

     In June 1999,  Jones  Intercable  was named a defendant in a case captioned
City Partnership Co.,  derivatively on behalf of Cable TV Fund 12-C, Ltd., Cable
TV Fund  12-D,  Ltd.  and  Cable TV Fund  12-BCD  Venture,  plaintiff  v.  Jones
Intercable,  Inc.,  defendant and Cable TV Fund 12-C,  Ltd., Cable TV Fund 12-D,
Ltd. and Cable TV Fund 12-BCD Venture,  nominal defendants (U.S. District Court,
District of Colorado, Civil Action No. 99-WM-1155) (the "City Partnership" case)
brought by City  Partnership  Co., a limited partner of the named  partnerships.
The plaintiff's  complaint alleges that Jones Intercable  breached its fiduciary
duty to the plaintiff and to the other limited  partners of the partnerships and
to the Venture in connection with the Venture's sale of the Palmdale, California
cable  communications  system (the  "Palmdale  System") to a subsidiary of Jones
Intercable  in  December  1998.  The  complaint  alleges  that Jones  Intercable
acquired  the Palmdale  System at an unfairly low price that did not  accurately
reflect the market value of the Palmdale System. The plaintiff also alleges that
the proxy  solicitation  materials  delivered  to the  limited  partners  of the
partnerships  in  connection  with the  votes  of the  limited  partners  on the
Venture's  sale of the  Palmdale  System  contained  inadequate  and  misleading
information  concerning  the fairness of the  transaction,  which the  plaintiff
claims caused Jones  Intercable  to breach its  fiduciary  duty of candor to the
limited partners and which the plaintiff  claims  constituted acts and omissions
in  violation  of  Section  14(a) of the  Securities  Exchange  Act of 1934,  as
amended.  Plaintiff also claims that Jones  Intercable  breached the contractual
provision of the partnerships' limited partnership agreements requiring that the
sale  price  be  determined  by  the  average  of  three  separate,  independent
appraisals,   challenging   both  the  independence  and  the  currency  of  the
appraisals. The complaint finally seeks declaratory injunctive relief to prevent
Jones  Intercable  from making use of the  partnerships'  funds to finance Jones
Intercable's defense of this litigation.






     In August 1999,  Jones Intercable was named a defendant in a case captioned
Gramercy  Park  Investments,  LP,  Cobble Hill  Investments,  LP and  Madison/AG
Partnership Value Partners II, plaintiffs v. Jones Intercable, Inc. and Glenn R.
Jones, defendants, and Cable TV Fund 12-B, Ltd., Cable TV Fund 12-C, Ltd., Cable
TV Fund 12-D,  Ltd.,  Cable TV Fund  14-A,  Ltd.  and Cable TV Fund 14-B,  Ltd.,
nominal defendants (U.S. District Court, District of Colorado,  Civil Action No.
99-B-1508) (the "Gramercy  Park" case) brought as a class and derivative  action
by limited partners of the named partnerships. The plaintiffs' complaint alleges
that the defendants made false and misleading statements to the limited partners
of the named partnerships in connection with the solicitation of proxies and the
votes  of  the  limited  partners  on the  sales  of the  Palmdale  System,  the
Albuquerque,  New Mexico cable communications system (the "Albuquerque System"),
the Littlerock, California cable communications system (the "Littlerock System")
and the Calvert  County,  Maryland  cable  communications  system (the  "Calvert
County  System") by the named  partnerships  to Jones  Intercable  or one of its
subsidiaries  in violation of Sections 14 and 20 of the Securities  Exchange Act
of  1934,  as  amended.  The  plaintiffs  specifically  allege  that  the  proxy
statements  delivered  to the limited  partners in  connection  with the limited
partners'  votes on these  sales were false,  misleading  and failed to disclose
material  facts  necessary  to make  the  statements  made not  misleading.  The
plaintiffs'  complaint also alleges that the defendants breached their fiduciary
duties  to the  plaintiffs  and to  the  other  limited  partners  of the  named
partnerships and to the named  partnerships in connection with the various sales
of the Albuquerque  System,  the Palmdale System,  the Littlerock System and the
Calvert County System to subsidiaries of Jones Intercable. The complaint alleges
that Jones Intercable  acquired these cable  communications  systems at unfairly
low prices that did not accurately reflect the market values of the systems. The
plaintiffs seek on their own behalf and on behalf of all other limited  partners
compensatory  and nominal  damages,  the costs and  expenses of the  litigation,
including  reasonable  attorneys'  and experts' fees, and punitive and exemplary
damages.

     In  September  1999,  Jones  Intercable  was  named a  defendant  in a case
captioned Mary Schumacher,  Charles McKenzie and Geraldine Lucas,  plaintiffs v.
Jones  Intercable,  Inc. and Glenn R. Jones,  defendants and Cable TV Fund 12-B,
Ltd.,  Cable TV Fund 12-C,  Ltd.,  Cable TV Fund 12-D, Ltd., Cable TV Fund 14-A,
Ltd. and Cable TV Fund 14-B,  Ltd.,  nominal  defendants  (U.S.  District Court,
District of Colorado,  Civil Action No. 99-WM-1702)  ("Schumacher") brought as a
class and derivative action by three limited partners of the named partnerships.
The  substance  of  the  Schumacher  plaintiffs'  complaint  is  similar  to the
allegations raised in the Gramercy Park case.

     In  September  1999,  Jones  Intercable  was  named a  defendant  in a case
captioned Robert Margolin, Henry Wahlgren and Joan Wahlgren, plaintiffs v. Jones
Intercable,  Inc. and Glenn R. Jones,  defendants and Cable TV Fund 12-B,  Ltd.,
Cable TV Fund 12-C, Ltd., Cable TV Fund 12-D, Ltd., Cable TV Fund 14-A, Ltd. and
Cable TV Fund 14-B, Ltd., nominal defendants (U.S.  District Court,  District of
Colorado,  Civil  Action  No.  99-B-1778)  ("Margolin")  brought  as a class and
derivative  action by three  limited  partners  of the named  partnerships.  The
substance of the Margolin  plaintiffs'  complaint is similar to the  allegations
raised in the Gramercy Park case.

     In November  1999,  the United  States  District  Court for the District of
Colorado  entered  an order  consolidating  all of the cases  challenging  Jones
Intercable's acquisitions of the Albuquerque,  Palmdale,  Littlerock and Calvert
County Systems because these cases involve common questions of law and fact. The
cases are  presented as both class and  derivative  actions.  In June 2001,  the
plaintiffs filed a motion for class  certification.  In August 2001, the General
Partner  filed  a  brief  in  opposition   to   plaintiffs'   motion  for  class
certification.  In September 2002, the court granted the plaintiffs'  motion for
class certification.

     The General  Partner  believes  that the  defendants  have  defenses to the
plaintiffs'  claims for  relief and  challenges  to the  plaintiffs'  claims for
damages,  and the General Partner  intends to defend these lawsuits  vigorously.
All amounts to be paid, if any, as a result of the  litigation  described  above
are the  responsibility of the General Partner,  subject to any  indemnification
rights of the General Partner  pursuant to the terms of the limited  partnership
agreements.

Litigation Relating to Limited Partnership List Requests

     The  Partnership  was  a  defendant  in  a  case  captioned  Everest  Cable
Investors, LLC, et al., plaintiffs v. Jones Intercable, Inc., et al., defendants
(Superior  Court, Los Angeles County,  State of California,  Case No. BC 213632)
originally filed in July 1999.  Plaintiffs alleged that certain of them formed a
venture to acquire  limited  partnership  interests in the  Partnership and that
plaintiffs were frustrated in this purpose by Jones Intercable's alleged refusal
to provide  plaintiffs  with a list of the names and  addresses  of the  limited
partners of the Partnership. Plaintiffs alleged

                                        2




that their failure to obtain the  partnership  list prevented them from making a
tender offer for the Partnership's  limited  partnership  interests causing them
economic loss.  None of the plaintiffs is a limited  partner of the  Partnership
but one of the  plaintiffs  alleged  that it held a  power  of  attorney  from a
limited  partner of the  Partnership.  The trial  court found that a holder of a
power of attorney is not a real party in interest capable of suing on the rights
of the  principal  and thus  dismissed  the case  against the  Partnership.  The
plaintiffs  chose not to  appeal  this  ruling  of the trial  court and thus the
Partnership is no longer a party to this litigation.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     None.


                                    PART II.

ITEM 5. MARKET FOR THE REGISTRANT'S COMMON STOCK AND RELATED SECURITY
        HOLDER MATTERS

     While the  Partnership is publicly held,  there is no public market for the
limited partnership interests, and it is not expected that a market will develop
in the future. As of December 31, 2002, the number of equity security holders in
the Partnership was 7,367.

ITEM 6. SELECTED FINANCIAL DATA




                                                               For the Year Ended December 31,

Cable TV Fund 12-B, Ltd.                   2002          2001             2000              1999              1998
                                       -----------   -------------    -------------     -------------     -------------

                                                                                               
Equity in Net Income (Loss) of Cable
     Television Joint Venture             $            $                    $6,352          ($9,648)      $22,468,979
Net (Loss) Income                           (55,134)     (55,116)          (60,232)         (38,335)       22,413,631 (1)
Net (Loss) Income per Limited
     Partnership Unit                          (.37)        (.37)             (.41)            (.26)           155.36 (1)
Weighted Average Number of Limited
     Partnership Units Outstanding          111,035      111,035           111,035          111,035           111,035
General Partner's Capital                     3,613       17,397            31,176           46,234            55,818
Limited Partners' Capital                    10,840       52,190            93,527          138,701           167,452
Total Assets                                 21,193       73,307           140,393          213,622         6,357,594
General Partner Advances                      6,740        3,720            15,690           28,687


                                                               For the Year Ended December 31,

Cable TV Fund 12-BCD Venture               2002         2001             2000             1999              1998
                                       -----------   -------------    -------------     -------------     -------------
Revenues                                  $            $               $                $                 $59,492,754
Depreciation and Amortization                                                                              16,500,689
Operating Income                                                                                            3,924,809
Net Income (Loss)                                                           69,191         (105,094)      243,722,979 (1)
Partners' Capital                                                                         2,327,155         2,432,249
Total Assets                                                                              2,327,155        69,325,751

<FN>
(1) Net income resulted  primarily from the sale of the  Albuquerque  System and
the Palmdale System by the Venture in June 1998 and December 1998, respectively.
</FN>



                                        3



ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
        RESULTS OF OPERATIONS

     The following discussion contains,  in addition to historical  information,
forward-looking  statements  that are based  upon  certain  assumptions  and are
subject to a number of risks and uncertainties.

FINANCIAL CONDITION

     The Partnership  owned a 9 percent interest in the Venture.  The investment
in cable television joint venture was accounted for under the equity method. The
Venture was liquidated in 2000 (see below). The only asset of the Partnership at
December 31, 2002 was its cash on hand of approximately  $21,000,  which will be
held in reserve and used to pay the  administrative  expenses of the Partnership
until it is dissolved. The Partnership may not have enough cash to reimburse the
general  partner  for  all   administrative   expenses  incurred  prior  to  the
dissolution of the Partnership.  In the event that the Partnership's cash supply
is inadequate to cover such costs,  the General  Partner will be required to pay
for any shortfall.  In addition,  all amounts to be paid, if any, as a result of
the pending  litigation  against the Partnership are the  responsibility  of the
General Partner,  subject to any  indemnification  rights of the General Partner
pursuant to the terms of the limited partnership agreements  (see Item 3 - Legal
Proceedings).

     Taking into account all  distributions  that have been made at December 31,
2002,  the  Partnership's  limited  partners have received  $1,032 for each $500
limited  partnership  interest,  or  $2,064  for  each  $1,000  invested  in the
Partnership.

RESULTS OF OPERATIONS

     The  Venture  was  liquidated  in 2000  and the  Partnership  conducted  no
operations  in  2002,  2001 or 2000;  therefore,  a  discussion  of  results  of
operations  would not be meaningful.  Administrative  and other expense,  net of
$56,088,  $58,153 and $66,584  incurred  in 2002,  2001 and 2000,  respectively,
primarily  related to various costs  associated with the  administration  of the
Partnership.  Prior to its  liquidation,  the Venture earned  interest income of
$69,191 in 2000 on its cash balance on hand and its cash was  distributed to its
Venture partners. The Partnership is expected to be dissolved when the remaining
litigation  against it is concluded.  Until that time,  administrative  expenses
will continue to be incurred.


ITEM 8.       FINANCIAL STATEMENTS

     The audited financial statements of the Partnership as of December 31, 2002
and 2001 and for the three years in the period ended December 31, 2002 follow.




                                        4



INDEPENDENT AUDITORS' REPORT


To the Partners of Cable TV Fund 12-B, Ltd.:

     We have audited the accompanying  balance sheet of Cable TV Fund 12-B, Ltd.
(a Colorado  limited  partnership)  as of  December  31,  2002,  and the related
statements of  operations,  partners'  capital and cash flows for the year ended
December 31, 2002.  These  financial  statements are the  responsibility  of the
general  partner's  management.  Our  responsibility is to express an opinion on
these financial statements based on our audit. The financial statements of Cable
TV Fund 12-B, Ltd. as of December 31, 2001 and the years ended December 31, 2001
and 2000 were  audited  by other  auditors  who have  ceased  operations.  Those
auditors expressed an unqualified opinion on those financial statements in their
report dated March 26, 2002.

     We conducted our audit in  accordance  with  auditing  standards  generally
accepted in the United States of America.  Those standards  require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  An audit also includes assessing the accounting principles used and
significant  estimates  made by  management,  as well as evaluating  the overall
financial  statement  presentation.   We  believe  that  our  audit  provides  a
reasonable basis for our opinion.

     In our  opinion,  the 2002  financial  statements  present  fairly,  in all
material  respects,  the  financial  position of Cable TV Fund 12-B,  Ltd. as of
December 31, 2002, and the results of their  operations and their cash flows for
the year then ended, in conformity with accounting principles generally accepted
in the United States of America.

     As described in Note 3, the administrative  expenses of the Partnership are
paid for by the General  Partner and are reimbursed by the  Partnership.  In the
event that the Partnership's  cash supply is inadequate to cover such costs, the
General  Partner will be required to pay for any  shortfall.  In  addition,  all
amounts to be paid,  if any, as a result of the  litigation  described in Note 5
are the  responsibility of the General Partner,  subject to any  indemnification
rights of the General Partner  pursuant to the terms of the limited  partnership
agreements.

/s/ Deloitte & Touche LLP

Philadelphia, Pennsylvania
January 31, 2003.

                                        5




REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Partners of Cable TV Fund 12-B, Ltd.:

     We have audited the accompanying  balance sheet of CABLE TV FUND 12-B, LTD.
(a  Colorado  limited  partnership)  as of December  31, 2001 and 2000,  and the
related  statements of operations,  partners' capital and cash flows for each of
the  three  years  in the  period  ended  December  31,  2001.  These  financial
statements  are the  responsibility  of the general  partner's  management.  Our
responsibility  is to express an opinion on these financial  statements based on
our audits.

     We conducted our audits in accordance  with  auditing  standards  generally
accepted in the United States.  Those standards require that we plan and perform
the audit to obtain reasonable  assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.  An
audit also includes  assessing the accounting  principles  used and  significant
estimates  made by  management,  as well as  evaluating  the  overall  financial
statement  presentation.  We believe that our audits provide a reasonable  basis
for our opinion.

     In our opinion,  the financial statements referred to above present fairly,
in all material respects,  the financial position of Cable TV Fund 12-B, Ltd. as
of December 31, 2001 and 2000,  and the results of its  operations  and its cash
flows for each of the three years in the period  ended  December  31,  2001,  in
conformity with accounting principles generally accepted in the United States.

                                                        /s/ ARTHUR ANDERSEN, LLP

Denver, Colorado,
March 26, 2002.

NOTE:    This  Audit  Report  is a copy  of the  Report  of  Independent  Public
         Accountants  from our  December  31, 2001  Annual  Report on Form 10-K,
         filed March 29,  2002,  and has not been  reissued by Arthur  Andersen,
         LLP.



                                        6




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

BALANCE SHEET





                                                                                    December 31,

                                ASSETS                                      2002                    2001
                                                                       ---------------         ---------------
                                                                                                 
Cash...................................................................        $21,193                 $73,307
                                                                       ---------------         ---------------

              Total assets.............................................        $21,193                 $73,307
                                                                       ===============         ===============


                   LIABILITIES AND PARTNERS' CAPITAL

LIABILITIES:
     Advances from affiliates..........................................         $6,740                  $3,720
                                                                       ---------------         ---------------

              Total liabilities........................................          6,740                   3,720
                                                                       ---------------         ---------------

Commitments and Contingencies (Note 5)

PARTNERS' CAPITAL:
General Partner-
     Contributed capital...............................................          1,000                   1,000
     Distributions.....................................................    (19,696,268)            (19,696,268)
     Accumulated earnings..............................................     19,698,881              19,712,665
                                                                       ---------------         ---------------

                                                                                 3,613                  17,397
                                                                       ---------------         ---------------

Limited Partners-
     Net contributed capital (111,035 units outstanding
         at December 31, 2002 and 2001)................................     47,645,060              47,645,060
     Distributions.....................................................   (114,620,017)           (114,620,017)
     Accumulated earnings..............................................     66,985,797              67,027,147
                                                                       ---------------         ---------------

                                                                                10,840                  52,190
                                                                       ---------------         ---------------

              Total liabilities and partners' capital..................        $21,193                 $73,307
                                                                       ===============         ===============




See notes to financial statements.




                                        7




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

                            STATEMENT OF OPERATIONS




                                                                          Year Ended December 31,

                                                                  2002              2001             2000
                                                              -------------     -------------    -------------
                                                                                             
INCOME (EXPENSE):
     Interest income..........................................         $954            $3,037         $
     Administrative expenses and other, net...................      (56,088)          (58,153)         (66,584)
                                                              -------------     -------------    -------------

                                                                    (55,134)          (55,116)         (66,584)

EQUITY IN NET INCOME OF CABLE
     TELEVISION JOINT VENTURE.................................                                           6,352
                                                              -------------     -------------    -------------

NET LOSS......................................................     ($55,134)         ($55,116)        ($60,232)
                                                              =============     =============    =============

ALLOCATION OF NET LOSS:
     General Partner..........................................     ($13,784)         ($13,779)        ($15,058)
                                                              =============     =============    =============

     Limited Partners.........................................     ($41,350)         ($41,337)        ($45,174)
                                                              =============     =============    =============

NET LOSS PER LIMITED PARTNERSHIP UNIT.........................       ($0.37)           ($0.37)          ($0.41)
                                                              =============     =============    =============

WEIGHTED AVERAGE NUMBER
     OF LIMITED PARTNERSHIP
     UNITS OUTSTANDING........................................      111,035           111,035          111,035
                                                              =============     =============    =============




See notes to financial statements.



                                        8




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

STATEMENT OF PARTNERS' CAPITAL





                                                                          Year Ended December 31,

                                                                  2002              2001             2000
                                                              -------------     -------------    -------------
                                                                                              
GENERAL PARTNER:
     Balance, beginning of year...............................      $17,397           $31,176          $46,234
     Net loss.................................................      (13,784)          (13,779)         (15,058)
                                                              -------------     -------------    -------------

     Balance, end of year.....................................       $3,613           $17,397          $31,176
                                                              =============     =============    =============


LIMITED PARTNERS:
     Balance, beginning of year...............................      $52,190           $93,527         $138,701
     Net loss.................................................      (41,350)          (41,337)         (45,174)
                                                              -------------     -------------    -------------

     Balance, end of year.....................................      $10,840           $52,190          $93,527
                                                              =============     =============    =============




See notes to financial statements.



                                        9




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

STATEMENT OF CASH FLOWS





                                                                         For the Year Ended December 31,

                                                                    2002              2001              2000
                                                                -------------     -------------    --------------

                                                                                                
OPERATING ACTIVITIES:
     Net loss...................................................     ($55,134)         ($55,116)         ($60,232)
     Adjustments to reconcile net loss to net
         cash used in operating activities:
              Equity in net income of Cable Television
                Joint Venture...................................                                           (6,352)
              Increase (decrease) in advances from affiliates...        3,020           (11,970)          (12,997)
                                                                -------------     -------------    --------------

                  Net cash used in operating activities.........      (52,114)          (67,086)          (79,581)
                                                                -------------     -------------    --------------

INVESTING ACTIVITIES:
     Distribution from Cable Television Joint Venture...........                                          219,974
                                                                -------------     -------------    --------------

                  Net cash provided by investing activities.....                                          219,974
                                                                -------------     -------------    --------------

(Decrease) increase in cash.....................................      (52,114)          (67,086)          140,393

Cash, beginning of year.........................................       73,307           140,393
                                                                -------------     -------------    --------------

Cash, end of year...............................................      $21,193           $73,307          $140,393
                                                                =============     =============    ==============






See notes to financial statements.



                                       10




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

NOTES TO FINANCIAL STATEMENTS


1. ORGANIZATION AND PARTNERS' INTERESTS

     Formation and Business
     Cable TV Fund 12-B,  Ltd.  ("Fund 12-B" or the  "Partnership"),  a Colorado
     limited  partnership,  was formed on June 5, 1985,  under a public  program
     sponsored by Jones Intercable,  Inc. ("Jones Intercable").  The Partnership
     was formed to acquire,  construct,  develop and  operate  cable  television
     systems.  The  Partnership  had no  operations  in the  three  years  ended
     December  31,  2002 and is  expected  to be  dissolved  when the  remaining
     litigation against it is concluded (see Note 5).

     Formation of Joint Venture
     The Partnership  owned a 9 percent interest in Cable TV Fund 12-BCD Venture
     (the "Venture") through a capital contribution made to the Venture in April
     1986 of $12,437,500. The Venture owned the cable television systems serving
     Tampa,  Florida  (the  "Tampa  System"),   Albuquerque,   New  Mexico  (the
     "Albuquerque  System"),  and Palmdale,  California (the "Palmdale System").
     Prior to 1999, the Venture sold all of its cable  television  systems.  The
     Venture  was  liquidated  in 2000 and  therefore,  the  Partnership  has no
     investment in the Venture at December 31, 2002.

     General Partner
     On  April  7,  1999,   Comcast  Holdings   Corporation   (formerly  Comcast
     Corporation)   ("Comcast")  completed  the  acquisition  of  a  controlling
     interest in Jones Intercable, the Partnership's general partner until March
     2, 2000.  In December  1999,  Comcast and Jones  Intercable  entered into a
     definitive merger agreement pursuant to which Comcast agreed to acquire all
     of the outstanding shares of Jones Intercable not yet owned by Comcast.  On
     March 2, 2000,  Jones  Intercable  was merged  with and into  Comcast  JOIN
     Holdings,  Inc., a wholly owned subsidiary of Comcast.  As a result of this
     transaction,  Jones  Intercable no longer exists and Comcast JOIN Holdings,
     Inc.  continued as the surviving  corporation  of the merger.  On August 1,
     2000,  Comcast JOIN  Holdings,  Inc. was merged with and into Comcast Cable
     Communications,  Inc.  ("Comcast  Cable"),  a wholly  owned  subsidiary  of
     Comcast.  Comcast  Cable is now the  General  Partner  of the  Partnership.
     References in these Notes to "the General  Partner" refer to Comcast Cable.
     The General  Partner shares  corporate  offices with Comcast at 1500 Market
     Street, Philadelphia, Pennsylvania 19102-2148.

     Contributed Capital
     The  capitalization  of the  Partnership  is set forth in the  accompanying
     Statement of Partners' Capital. No limited partner is obligated to make any
     additional contributions to partnership capital.

     Jones Intercable  purchased its general partner interest in the Partnership
     by contributing $1,000 to partnership capital.  Comcast Cable now owns this
     general partner interest.

     All profits and losses of the Partnership  were allocated 99 percent to the
     limited partners and 1 percent to the General Partner, except for income or
     gain from the sale or disposition  of cable  television  properties,  which
     were  allocated  to the  partners  based  upon a  formula  set forth in the
     partnership  agreement,  and  interest  income  earned  prior to the  first
     acquisition by the  Partnership  of a cable  television  system,  which was
     allocated 100 percent to the limited partners. After such time, all profits
     and losses are allocated 75% to the limited partners and 25% to the General
     Partner.

     Taking into account all  distributions  that have been made at December 31,
     2002, the Partnership's limited partners have received $1,032 for each $500
     limited partnership interest, or $2,064 for each $1,000 limited partnership
     interest.

                                       11






CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

NOTES TO FINANCIAL STATEMENTS (Continued)


2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     Basis of Accounting
     The  accompanying  financial  statements  have been prepared on the accrual
     basis of accounting  in accordance  with  accounting  principles  generally
     accepted in the United  States of America.  The  Partnership's  tax returns
     were also prepared on the accrual basis.

     Management Use of Estimates
     The  preparation  of financial  statements  in conformity  with  accounting
     principles  generally  accepted  in the United  States of America  requires
     management  to make  estimates  and  assumptions  that affect the  reported
     amounts of assets and liabilities  and disclosure of contingent  assets and
     liabilities  at the  date of the  financial  statements  and  the  reported
     amounts of  revenues  and  expenses  during the  reporting  period.  Actual
     results could differ from those estimates.

     Investment in Cable Television Joint Venture
     The  Partnership's  investment  in the Venture was  accounted for under the
     equity  method due to the  Partnership's  influence  on the  Venture as the
     General  Partner.  Prior to its  liquidation,  the Venture earned  interest
     income of $69,191 in 2000.

     Cash and Cash Equivalents
     For purposes of the Statement of Cash Flows, the Partnership considered all
     highly  liquid  investments  purchased  with an original  maturity of three
     months or less to be cash equivalents.

3. TRANSACTIONS WITH THE GENERAL PARTNER AND AFFILIATES

     Distribution Ratios and Reimbursements
     Any partnership distributions made from cash flow (defined as cash receipts
     derived from routine operations,  less debt principal and interest payments
     and cash expenses) were allocated 99 percent to the limited  partners and 1
     percent to the  General  Partner.  Any  distributions  other than  interest
     income on limited partnership subscriptions earned prior to the acquisition
     of the Partnership's  first cable television system or from cash flow, such
     as from the sale or  refinancing  of a system  or upon  dissolution  of the
     Partnership,  were made as follows:  first,  to the limited  partners in an
     amount  which,  together with all prior  distributions,  equaled the amount
     initially  contributed by the limited partners;  the balance, 75 percent to
     the limited partners and 25 percent to the General Partner.

     All  administrative  expenses  are paid for by the General  Partner and are
     reimbursed by the Partnership.  In addition, the Partnership reimburses its
     general  partner  for  certain  allocated  administrative  expenses.  These
     expenses  represent  the salaries and related  benefits  paid for corporate
     personnel, who provide administrative,  accounting, tax, legal and investor
     relations  services to the  Partnership.  Such services,  and their related
     costs,  are necessary to the  administration  of the Partnership  until the
     Partnership is dissolved. Reimbursements made to the General Partner by the
     Partnership  for these  administrative  expenses  during  the  years  ended
     December  31,  2002,  2001 and 2000  were  $20,577,  $13,291  and  $16,893,
     respectively.  Such charges were  included in  Administrative  expenses and
     other, net in the accompanying Statement of Operations.

     The  Partnership  may not have enough cash to reimburse the general partner
     for all  administrative  expenses  incurred prior to the dissolution of the
     Partnership.  In the event that the Partnership's cash supply is inadequate
     to cover such costs,  the General  Partner  will be required to pay for any
     shortfall.  In addition, all amounts to be paid, if any, as a result of the
     litigation  described  in  Note 5 are  the  responsibility  of the  General
     Partner.



                                       12




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

NOTES TO FINANCIAL STATEMENTS (Continued)


4. INCOME TAXES

     Income  taxes  have  not  been  recorded  in  the  accompanying   financial
     statements  because they accrue  directly to the partners.  The federal and
     state income tax returns of the  Partnership  are prepared and filed by the
     General Partner.

     The Partnership's tax returns, the qualification of the Partnership as such
     for tax purposes,  and the amount of  distributable  partnership  income or
     loss are subject to examination by federal and state taxing authorities. If
     such  examinations  result in changes  with  respect  to the  Partnership's
     qualification  as such,  or in changes  with  respect to the  Partnership's
     recorded  income or loss,  the tax  liability  of the  general  and limited
     partners would likely be changed accordingly.

5. COMMITMENTS AND CONTINGENCIES

     Litigation  Challenging  Jones  Intercable's  Acquisitions of Certain Cable
     Systems

         In  June  1999,  Jones  Intercable  was  named  a  defendant  in a case
     captioned City  Partnership  Co.,  derivatively  on behalf of Cable TV Fund
     12-C,  Ltd.,  Cable TV Fund 12-D,  Ltd.  and Cable TV Fund 12-BCD  Venture,
     plaintiff  v. Jones  Intercable,  Inc.,  defendant  and Cable TV Fund 12-C,
     Ltd.,  Cable TV Fund 12-D, Ltd. and Cable TV Fund 12-BCD  Venture,  nominal
     defendants  (U.S.  District Court,  District of Colorado,  Civil Action No.
     99-WM-1155) (the "City  Partnership" case) brought by City Partnership Co.,
     a limited  partner of the named  partnerships.  The  plaintiff's  complaint
     alleges that Jones Intercable  breached its fiduciary duty to the plaintiff
     and to the other limited partners of the partnerships and to the Venture in
     connection  with  the  Venture's  sale of the  Palmdale,  California  cable
     communications  system (the  "Palmdale  System") to a  subsidiary  of Jones
     Intercable in December  1998. The complaint  alleges that Jones  Intercable
     acquired  the  Palmdale  System  at an  unfairly  low  price  that  did not
     accurately  reflect the market value of the Palmdale System.  The plaintiff
     also alleges that the proxy solicitation materials delivered to the limited
     partners of the  partnerships  in connection  with the votes of the limited
     partners on the Venture's sale of the Palmdale System contained  inadequate
     and  misleading  information  concerning  the fairness of the  transaction,
     which the plaintiff  claims caused Jones Intercable to breach its fiduciary
     duty of candor to the  limited  partners  and  which the  plaintiff  claims
     constituted  acts  and  omissions  in  violation  of  Section  14(a) of the
     Securities  Exchange Act of 1934,  as amended.  Plaintiff  also claims that
     Jones Intercable  breached the contractual  provision of the  partnerships'
     limited partnership  agreements requiring that the sale price be determined
     by the average of three separate, independent appraisals,  challenging both
     the independence and the currency of the appraisals.  The complaint finally
     seeks declaratory injunctive relief to prevent Jones Intercable from making
     use of the  partnerships'  funds to finance Jones  Intercable's  defense of
     this litigation.

         In  August  1999,  Jones  Intercable  was named a  defendant  in a case
     captioned  Gramercy Park Investments,  LP, Cobble Hill Investments,  LP and
     Madison/AG  Partnership  Value Partners II, plaintiffs v. Jones Intercable,
     Inc. and Glenn R. Jones, defendants, and Cable TV Fund 12-B, Ltd., Cable TV
     Fund 12-C,  Ltd.,  Cable TV Fund 12-D,  Ltd.,  Cable TV Fund 14-A, Ltd. and
     Cable TV Fund 14-B, Ltd., nominal defendants (U.S. District Court, District
     of Colorado, Civil Action No. 99-B-1508) (the "Gramercy Park" case) brought
     as a  class  and  derivative  action  by  limited  partners  of  the  named
     partnerships.  The plaintiffs'  complaint  alleges that the defendants made
     false  and  misleading  statements  to the  limited  partners  of the named
     partnerships in connection  with the  solicitation of proxies and the votes
     of  the  limited  partners  on  the  sales  of  the  Palmdale  System,  the
     Albuquerque,  New Mexico  cable  communications  system  (the  "Albuquerque
     System"),  the  Littlerock,  California  cable  communications  system (the
     "Littlerock System") and the Calvert County,  Maryland cable communications
     system (the "Calvert  County  System") by the named  partnerships  to Jones
     Intercable or one of its subsidiaries in violation of Sections 14 and 20 of
     the   Securities   Exchange  Act  of  1934,  as  amended.   The  plaintiffs
     specifically  allege  that the proxy  statements  delivered  to the limited
     partners in connection with the limited partners' votes on these sales were
     false,  misleading and failed to disclose  material facts necessary to make
     the statements made not misleading. The plaintiffs'

                                       13




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

NOTES TO FINANCIAL STATEMENTS (Continued)


     complaint also alleges that the defendants  breached their fiduciary duties
     to  the  plaintiffs  and  to  the  other  limited  partners  of  the  named
     partnerships  and to the named  partnerships in connection with the various
     sales of the Albuquerque System, the Palmdale System, the Littlerock System
     and the Calvert  County System to  subsidiaries  of Jones  Intercable.  The
     complaint alleges that Jones Intercable acquired these cable communications
     systems at unfairly low prices that did not  accurately  reflect the market
     values of the  systems.  The  plaintiffs  seek on their own  behalf  and on
     behalf of all other limited partners  compensatory and nominal damages, the
     costs and expenses of the litigation,  including reasonable  attorneys' and
     experts' fees, and punitive and exemplary damages.

         In September  1999,  Jones  Intercable  was named a defendant in a case
     captioned Mary Schumacher, Charles McKenzie and Geraldine Lucas, plaintiffs
     v. Jones Intercable,  Inc. and Glenn R. Jones, defendants and Cable TV Fund
     12-B,  Ltd.,  Cable TV Fund 12-C,  Ltd., Cable TV Fund 12-D, Ltd., Cable TV
     Fund 14-A,  Ltd. and Cable TV Fund 14-B,  Ltd.,  nominal  defendants  (U.S.
     District  Court,  District  of  Colorado,   Civil  Action  No.  99-WM-1702)
     ("Schumacher")  brought as a class and  derivative  action by three limited
     partners  of the  named  partnerships.  The  substance  of  the  Schumacher
     plaintiffs'  complaint is similar to the allegations raised in the Gramercy
     Park case.

         In September  1999,  Jones  Intercable  was named a defendant in a case
     captioned Robert Margolin, Henry Wahlgren and Joan Wahlgren,  plaintiffs v.
     Jones  Intercable,  Inc. and Glenn R. Jones,  defendants  and Cable TV Fund
     12-B,  Ltd.,  Cable TV Fund 12-C,  Ltd., Cable TV Fund 12-D, Ltd., Cable TV
     Fund 14-A,  Ltd. and Cable TV Fund 14-B,  Ltd.,  nominal  defendants  (U.S.
     District  Court,   District  of  Colorado,   Civil  Action  No.  99-B-1778)
     ("Margolin")  brought  as a class and  derivative  action by three  limited
     partners  of  the  named  partnerships.   The  substance  of  the  Margolin
     plaintiffs'  complaint is similar to the allegations raised in the Gramercy
     Park case.

         In November 1999, the United States  District Court for the District of
     Colorado entered an order  consolidating all of the cases challenging Jones
     Intercable's  acquisitions  of the  Albuquerque,  Palmdale,  Littlerock and
     Calvert County Systems because these cases involve common  questions of law
     and fact. The cases are presented as both class and derivative  actions. In
     June 2001, the plaintiffs filed a motion for class certification. In August
     2001, the General Partner filed a brief in opposition to plaintiffs' motion
     for  class  certification.   In  September  2002,  the  court  granted  the
     plaintiffs' motion for class certification.

         The General  Partner  believes that the defendants have defenses to the
     plaintiffs'  claims for relief and challenges to the plaintiffs' claims for
     damages,   and  the  General  Partner  intends  to  defend  these  lawsuits
     vigorously.  As  discussed  in Note 3, all  amounts to be paid,  if any, in
     connection  with this  litigation  are the  responsibility  of the  General
     Partner ,  subject to any  indemnification  rights of the  General  Partner
     pursuant to the terms of the limited partnership agreements.

     Litigation Relating to Limited Partnership List Requests

         The  Partnership  was a defendant  in a case  captioned  Everest  Cable
     Investors,  LLC, et al.,  plaintiffs  v. Jones  Intercable,  Inc.,  et al.,
     defendants (Superior Court, Los Angeles County,  State of California,  Case
     No. BC 213632)  originally  filed in July  1999.  Plaintiffs  alleged  that
     certain of them formed a venture to acquire limited  partnership  interests
     in the  Partnership  and that plaintiffs were frustrated in this purpose by
     Jones Intercable's alleged refusal to provide plaintiffs with a list of the
     names and addresses of the limited partners of the Partnership.  Plaintiffs
     alleged that their failure to obtain the  partnership  list  prevented them
     from  making a  tender  offer  for the  Partnership's  limited  partnership
     interests  causing them economic loss.  None of the plaintiffs is a limited
     partner of the Partnership but one of the plaintiffs alleged that it held a
     power of  attorney  from a limited  partner of the  Partnership.  The trial
     court  found  that a holder of a power of  attorney  is not a real party in
     interest capable of suing on the rights of the principal and thus dismissed
     the case against the  Partnership.  The plaintiffs chose not to appeal this
     ruling of the trial court and thus the  Partnership is no longer a party to
     this litigation.


                                       14




CABLE TV FUND 12-B, LTD.
(A Limited Partnership)

NOTES TO FINANCIAL STATEMENTS (Continued)


6. UNAUDITED SUPPLEMENTARY DATA

     Selected unaudited quarterly financial information is presented below:




                                          First             Second          Third         Fourth           Total
2002                                      Quarter           Quarter        Quarter        Quarter          Year
                                          -----------     -----------    -----------    -----------     -----------
                                                                                            
Net loss..................................    ($6,935)       ($25,157)       ($8,537)      ($14,505)       ($55,134)
Net loss per limited partnership unit.....       (.05)           (.17)          (.06)          (.09)           (.37)
Weighted average number of limited
     partnership units outstanding........    111,035         111,035        111,035        111,035         111,035


                                          First             Second          Third         Fourth           Total
2001                                      Quarter           Quarter        Quarter        Quarter          Year
                                          -----------     -----------    -----------    -----------     -----------

Net loss..................................    ($8,747)       ($30,260)       ($5,425)      ($10,684)       ($55,116)
Net loss per limited partnership unit.....       (.06)           (.20)          (.04)          (.07)           (.37)
Weighted average number of limited
     partnership units outstanding........    111,035         111,035        111,035        111,035         111,035




                                       15





ITEM 9.       CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
              FINANCIAL DISCLOSURE

None.


                                    PART III.

ITEM 10.      DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The Partnership  itself has no officers or directors.  Certain  information
concerning  the directors and  executive  officers of the General  Partner as of
December 31, 2002 is set forth below.  Directors  of the General  Partner  serve
until the next annual meeting of the General Partner and until their  successors
shall be elected and qualified.

     Brian L.  Roberts  was named  Chairman of the  General  Partner's  Board of
Directors  in November  2002.  Mr.  Roberts  had served as Vice  Chairman of the
General Partner's Board of Directors since April 1999. Mr. Roberts has served as
the  President  and as a director  of Comcast  for more than five  years.  As of
December 31, 2002, Mr. Roberts has sole voting power over  approximately 33 1/3%
of the  combined  voting  power of Comcast  Corporation's  two classes of voting
common stock. Mr. Roberts is the Chief Executive  Officer of the General Partner
and of  Comcast  Corporation.  He is also a  director  of The  Bank of New  York
Company, Inc. He is 43 years old.

     Lawrence S. Smith has served as Executive  Vice President and a director of
the General  Partner since April 1999. Mr. Smith has served as an Executive Vice
President  of  Comcast  for more  than five  years.  Mr.  Smith is the  Co-Chief
Financial  Officer of the General Partner and of Comcast  Corporation.  He is 55
years old.

     John R. Alchin has served as Executive  Vice President and Treasurer of the
General  Partner since January 2000.  Prior to that time, Mr. Alchin served as a
Senior Vice President and Treasurer and a director of the General  Partner since
April 1999.  Mr.  Alchin was named an  Executive  Vice  President  of Comcast in
January  2000.  Prior to that time,  he served as a Senior  Vice  President  and
Treasurer  of  Comcast  for more than five  years.  Mr.  Alchin is the  Co-Chief
Financial  Officer of the General Partner and of Comcast  Corporation.  He is 54
years old.

     David L. Cohen  joined  Comcast in July 2002 as Executive  Vice  President.
Prior to that time,  he was Partner in, and Chairman of, the law firm of Ballard
Spahr Andrews & Ingersoll, LLP for more than five years. Mr. Cohen is a director
of the General Partner. He is 47 years old.

     Arthur R.  Block was named a director  of the  General  Partner's  Board of
Directors in November  2002. Mr. Block has served as a Senior Vice President and
General Counsel for Comcast since January 2000. Prior to January 2000, Mr. Block
served as Vice President and Senior Deputy  General  Counsel of Comcast for more
than five years.  Mr. Block also was named  Secretary of Comcast  Corporation in
November 2002. He is 48 years old.

     Lawrence J. Salva was named  Controller of Comcast  Corporation in November
2002.  Mr. Salva joined  Comcast in January  2000 as Senior Vice  President  and
Chief  Accounting  Officer.  Prior  to  that  time,  Mr.  Salva  was a  national
accounting    consulting    partner   in   the   public   accounting   firm   of
PricewaterhouseCoopers  for more than five  years.  Mr.  Salva is a Senior  Vice
President of the General Partner. He is 46 years old.

ITEM 11.      EXECUTIVE COMPENSATION

     The Partnership has no employees;  however,  various personnel are required
to administer the  financial,  tax and legal affairs of the  Partnership  and to
maintain the books and records of the  Partnership.  Such personnel are employed
by the General  Partner  and,  pursuant to the terms of the limited  partnership
agreement of the  Partnership,  the costs of such  employment are charged by the
General Partner to the Partnership. See Item 13.

ITEM 12.      SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGERS

     As of  December  31,  2002,  no person or entity  owned more than 5% of the
limited partnership interests of the Partnership.

                                       16




ITEM 13.      CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The  Partnership  reimburses  its general  partner  for  certain  allocated
overhead and administrative  expenses. These expenses represent the salaries and
benefits paid to corporate  personnel.  Such personnel  provide  administrative,
tax, accounting,  legal and investor relations services to the Partnership.  The
Partnership will continue to reimburse its general partner for actual time spent
on Partnership  business by employees of Comcast until the Partnership either is
liquidated  and  dissolved or exhausts  its cash supply.  During the years ended
December 31, 2002, 2001 and 2000, such reimbursements  totaled $20,577,  $13,291
and $16,893, respectively.

                                    PART IV.

ITEM 14.      CONTROLS AND PROCEDURES

         (a)  Controls  and  procedures.  Our chief  executive  officer  and our
         co-chief financial officers,  after evaluating the effectiveness of our
         "disclosure  controls  and  procedures"  (as defined in the  Securities
         Exchange Act of 1934 Rules  13a-14(c) and  15d-14(c)) as of a date (the
         "Evaluation Date") within 90 days before the filing date of this annual
         report,  have concluded that as of the Evaluation  Date, our disclosure
         controls  and  procedures  were  adequate  and  designed to ensure that
         material information  relating to us and our consolidated  subsidiaries
         would be made known to them by others within those entities.

         (b) Changes in internal controls.  There were no significant changes in
         our internal controls or to our knowledge,  in other factors that could
         significantly affect our internal controls and procedures subsequent to
         the Evaluation Date.

ITEM 15.      EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

(a) The following financial statements of ours are included in Part II, Item 8:



                                                                                                     
                  Independent Auditors' Reports..........................................................5
                  Balance Sheet--December 31, 2002 and 2001..............................................7
                  Statement of Operations--Years Ended December 31, 2002, 2001 and 2000..................8
                  Statement of Partners' Capital--Years Ended December 31, 2002, 2001 and 2000...........9
                  Statement of Cash Flows--Years Ended December 31, 2002, 2001 and 2000.................10
                  Notes to Financial Statements.........................................................11


(b)      The following  financial  statement  schedules  required to be filed by
         Items 8 and 14(d) of Form 10-K are included in Part IV:

         None

(c)      Reports on Form 8-K:
         (i)      We filed a Current  Report on Form 8-K under  Items 4 and 7(c)
                  dated June 24, 2002  announcing a change in the  Partnership's
                  certifying accountant.

(d) Exhibits filed herewith:
         4.1      Limited  Partnership  Agreement  for Cable TV Fund  12-B,  Ltd
                  (incorporated  by  reference  from  the  Partnership's  Annual
                  Report on Form 10-K for the  fiscal  year ended  December  31,
                  1985).
         4.2      Joint Venture  Agreement of Cable TV Fund 12-BCD Venture dated
                  as of March 17, 1986, among Cable TV Fund 12-B, Ltd., Cable TV
                  Fund 12-C, Ltd. and Cable TV Fund 12-D, Ltd.  (incorporated by
                  reference  from the  Partnership's  Annual Report on Form 10-K
                  for the fiscal year ended December 31, 1987).

                                       17





                                                         
                                   SIGNATURES

     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its  behalf by the  undersigned,  thereunto  duly  authorized  in  Philadelphia,
Pennsylvania.


                                                           CABLE TV FUND 12-B, LTD.,
                                                           a Colorado limited partnership


                                                           By:   Comcast Cable Communications, Inc.,
                                                                 a Delaware corporation, its general partner


                                                           By:   /s/ Brian L. Roberts
                                                                 ----------------------------------------------------
                                                                 Brian L. Roberts
Dated: March 28, 2003                                            Chairman; Director

     Pursuant to the  requirements of the Securities  Exchange Act of 1934, this
report  has  been  signed  below  by the  following  persons  on  behalf  of the
Registrant and in the capacities and on the dates indicated.



                                                           By:   /s/ Brian L. Roberts
                                                                 ----------------------------------------------------
                                                                 Brian L. Roberts
                                                                 Chairman; Director
Dated: March 28, 2003                                            (Principal Executive Officer)

                                                           By:   /s/ Lawrence S. Smith
                                                                 ----------------------------------------------------
                                                                 Lawrence S. Smith
Dated: March 28, 2003                                            Executive Vice President; Director
                                                                 (Co- Principal Financial Officer)

                                                           By:   /s/ John R. Alchin
                                                                 ----------------------------------------------------
                                                                 John R. Alchin
                                                                 Executive Vice President; Treasurer
Dated: March 28, 2003                                            (Co- Principal Financial Officer)

                                                           By:   /s/ David L. Cohen
                                                                 ----------------------------------------------------
                                                                 David L. Cohen
Dated: March 28, 2003                                            Executive Vice President; Director

                                                           By:   /s/ Arthur R. Block
                                                                 ----------------------------------------------------
                                                                 Arthur R. Block
                                                                 Senior Vice President; General Counsel; Secretary;
Dated: March 28, 2003                                            Director

                                                           By:   /s/ Lawrence J. Salva
                                                                 ----------------------------------------------------
                                                                 Lawrence J. Salva
                                                                 Senior Vice President
Dated: March 28, 2003                                            (Principal Accounting Officer)




                                       18





                                 CERTIFICATIONS

I, Brian L. Roberts, certify that:

1.   I have  reviewed  this  annual  report on Form 10-K of Cable TV Fund  12-B,
     Ltd.;

2.   Based on my  knowledge,  this  annual  report  does not  contain any untrue
     statement of a material fact or omit to state a material fact  necessary to
     make the statements  made, in light of the  circumstances  under which such
     statements  were made, not misleading with respect to the period covered by
     this annual report;

3.   Based on my  knowledge,  the  financial  statements,  and  other  financial
     information included in this annual report,  fairly present in all material
     respects the financial  condition,  results of operations and cash flows of
     the registrant as of, and for, the periods presented in this annual report;

4.   The  registrant's  other  certifying  officers  and I are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

     a)  designed  such  disclosure  controls  and  procedures  to  ensure  that
         material  information   relating  to  the  registrant,   including  its
         consolidated  subsidiaries,  is made known to us by others within those
         entities, particularly during the period in which this annual report is
         being prepared;

     b)  evaluated the effectiveness of the registrant's disclosure controls and
         procedures as of a date within 90 days prior to the filing date of this
         annual report (the "Evaluation Date"); and

     c)  presented in this annual report our conclusions about the effectiveness
         of the disclosure controls and procedures based on our evaluation as of
         the Evaluation Date;

5.   Registrant's other certifying  officers and I have disclosed,  based on our
     most  recent  evaluation,  to  the  registrant's  auditors  and  the  audit
     committee of the registrant's board of directors (or persons performing the
     equivalent functions):

     a)  all  significant  deficiencies  in the design or  operation of internal
         controls  which  could  adversely  affect the  registrant's  ability to
         record,   process,   summarize  and  report  financial  data  and  have
         identified  for the  registrant's  auditors any material  weaknesses in
         internal controls; and

     b)  any fraud,  whether or not material,  that involves management or other
         employees  who have a  significant  role in the  registrant's  internal
         controls; and

6.   The  registrant's  other  certifying  officers and I have indicated in this
     annual report whether there were significant  changes in internal  controls
     or in other  factors  that could  significantly  affect  internal  controls
     subsequent  to the  date  of our  most  recent  evaluation,  including  any
     corrective  actions with regard to  significant  deficiencies  and material
     weaknesses.

Date: March 28, 2003



/s/ Brian L. Roberts
- --------------------------------------------
Name: Brian L. Roberts
Chief Executive Officer





                                       19




I, Lawrence S. Smith, certify that:

1.   I have  reviewed  this  annual  report on Form 10-K of Cable TV Fund  12-B,
     Ltd.;

2.   Based on my  knowledge,  this  annual  report  does not  contain any untrue
     statement of a material fact or omit to state a material fact  necessary to
     make the statements  made, in light of the  circumstances  under which such
     statements  were made, not misleading with respect to the period covered by
     this annual report;

3.   Based on my  knowledge,  the  financial  statements,  and  other  financial
     information included in this annual report,  fairly present in all material
     respects the financial  condition,  results of operations and cash flows of
     the registrant as of, and for, the periods presented in this annual report;

4.   The  registrant's  other  certifying  officers  and I are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

     a)  designed  such  disclosure  controls  and  procedures  to  ensure  that
         material  information   relating  to  the  registrant,   including  its
         consolidated  subsidiaries,  is made known to us by others within those
         entities, particularly during the period in which this annual report is
         being prepared;

     b)  evaluated the effectiveness of the registrant's disclosure controls and
         procedures as of a date within 90 days prior to the filing date of this
         annual report (the "Evaluation Date"); and

     c)  presented in this annual report our conclusions about the effectiveness
         of the disclosure controls and procedures based on our evaluation as of
         the Evaluation Date;

5.   Registrant's other certifying  officers and I have disclosed,  based on our
     most  recent  evaluation,  to  the  registrant's  auditors  and  the  audit
     committee of the registrant's board of directors (or persons performing the
     equivalent functions):

     a)  all  significant  deficiencies  in the design or  operation of internal
         controls  which  could  adversely  affect the  registrant's  ability to
         record,   process,   summarize  and  report  financial  data  and  have
         identified  for the  registrant's  auditors any material  weaknesses in
         internal controls; and

     b)  any fraud,  whether or not material,  that involves management or other
         employees  who have a  significant  role in the  registrant's  internal
         controls; and

6.   The  registrant's  other  certifying  officers and I have indicated in this
     annual report whether there were significant  changes in internal  controls
     or in other  factors  that could  significantly  affect  internal  controls
     subsequent  to the  date  of our  most  recent  evaluation,  including  any
     corrective  actions with regard to  significant  deficiencies  and material
     weaknesses.


Date: March 28, 2003


/s/ Lawrence S. Smith
- -------------------------------------------
Name: Lawrence S. Smith
Co-Chief Financial Officer







                                       20




I, John R. Alchin, certify that:

1.   I have  reviewed  this  annual  report on Form 10-K of Cable TV Fund  12-B,
     Ltd.;

2.   Based on my  knowledge,  this  annual  report  does not  contain any untrue
     statement of a material fact or omit to state a material fact  necessary to
     make the statements  made, in light of the  circumstances  under which such
     statements  were made, not misleading with respect to the period covered by
     this annual report;

3.   Based on my  knowledge,  the  financial  statements,  and  other  financial
     information included in this annual report,  fairly present in all material
     respects the financial  condition,  results of operations and cash flows of
     the registrant as of, and for, the periods presented in this annual report;

4.   The  registrant's  other  certifying  officers  and I are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

     a)  designed  such  disclosure  controls  and  procedures  to  ensure  that
         material  information   relating  to  the  registrant,   including  its
         consolidated  subsidiaries,  is made known to us by others within those
         entities, particularly during the period in which this annual report is
         being prepared;

     b)  evaluated the effectiveness of the registrant's disclosure controls and
         procedures as of a date within 90 days prior to the filing date of this
         annual report (the "Evaluation Date"); and

     c)  presented in this annual report our conclusions about the effectiveness
         of the disclosure controls and procedures based on our evaluation as of
         the Evaluation Date;

5.   Registrant's other certifying  officers and I have disclosed,  based on our
     most  recent  evaluation,  to  the  registrant's  auditors  and  the  audit
     committee of the registrant's board of directors (or persons performing the
     equivalent functions):

     a)  all  significant  deficiencies  in the design or  operation of internal
         controls  which  could  adversely  affect the  registrant's  ability to
         record,   process,   summarize  and  report  financial  data  and  have
         identified  for the  registrant's  auditors any material  weaknesses in
         internal controls; and

     b)  any fraud,  whether or not material,  that involves management or other
         employees  who have a  significant  role in the  registrant's  internal
         controls; and

6.   The  registrant's  other  certifying  officers and I have indicated in this
     annual report whether there were significant  changes in internal  controls
     or in other  factors  that could  significantly  affect  internal  controls
     subsequent  to the  date  of our  most  recent  evaluation,  including  any
     corrective  actions with regard to  significant  deficiencies  and material
     weaknesses.


Date: March 28, 2003



/s/ John R. Alchin
- --------------------------------------------
Name: John R. Alchin
Co-Chief Financial Officer




                                       21