EXHIBIT 99.3


                               AMENDMENT NO. 2 TO
                       AGREEMENT AND PLAN OF AMALGAMATION

     Amendment  No. 2 dated as of  August  14,  1998  (the  "AMENDMENT")  to the
Agreement and Plan of Amalgamation dated as of February 4, 1998, as amended (the
"AMALGAMATION AGREEMENT"), among NTL Incorporated ("NTL"), NTL (Bermuda) Limited
("SUB") and Comcast UK Cable Partners Limited ("PARTNERS").

                              W I T N E S S E T H:

     WHEREAS,  the parties hereto have previously  entered into the Amalgamation
Agreement;

     WHEREAS,  concurrent  herewith,  NTL  and  Partners  are  entering  into an
agreement  dated  August  14,  1998 (the  "TELEWEST  AGREEMENT")  with  TeleWest
Communications  Plc and TeleWest  Communications  Holdings  Limited  relating to
Birmingham Cable and Cable London; and

     WHEREAS,  the  parties  hereto now desire to amend and  supplement  certain
provisions of the Amalgamation Agreement;

     NOW, THEREFORE, the parties hereto agree as follows:

     1. Section 7.1(b)(i) of the Amalgamation Agreement is hereby amended in its
entirety to read as follows:

          (i) if the Amalgamation shall not have been consummated by November 4,
     1998 (the "END DATE"), provided,  however, that (x) if there shall occur at
     any time  subsequent to September 4, 1998 and prior to November 4, 1998 any
     Restraint  prohibiting,  delaying or restricting the Partners  Stockholders
     Meeting,  the  voting  of  shares by  Comcast  Corporation  in favor of the
     Amalgamation or the consummation of the Amalgamation, the End Date shall be
     extended to December 31, 1998, (y) if, as of November 4, 1998, the Required
     Consents of the  bondholders of Partners shall not have been obtained,  the
     End Date shall be  extended  to  December  31,  1998,  and (z) the right to
     terminate this Agreement  pursuant to this Section  7.1(b)(i)  shall not be
     available  to any party  whose  failure to perform  any of its  obligations
     under this  Agreement  results in the  failure  of the  Amalgamation  to be
     consummated  by such time;  provided,  however,  that this Agreement may be
     extended not more than 30 days (but in no





     event to a date later  than  December  4, 1998) by either  party by written
     notice  to the  other  party  if  the  Amalgamation  shall  not  have  been
     consummated as a direct result of NTL or Partners  having failed to receive
     all  regulatory  approvals  required  to be  obtained  with  respect to the
     Amalgamation.

     2. Section 5.5 and Section 5.16 of the  Amalgamation  Agreement  are hereby
amended by deleting the phrase  "reasonable  best efforts" each place it appears
in  such   Sections  and   replacing   it  with  the  phrase   "best   efforts".
Notwithstanding  the  provisions of Section 5.5, the parties agree that it shall
not be a breach of any party's  obligations  thereunder if, prior to October 14,
1998,  the conditions to closing set forth in Article VI have been satisfied and
the  Closing  does not take place  until  October 14, 1998 in order to permit BC
Completion   (as   defined   in  the   TeleWest   Agreement)   to   take   place
contemporaneously with the Closing.

     3.  Section  6.2(d) of the  Amalgamation  Agreement  is hereby  amended  by
deleting the number "180" and replacing it with the number "150".

     4. NTL and Sub hereby expressly  consent to the TeleWest  Agreement and the
transactions  contemplated  thereby  and,  for  purposes  of Section  8.6 of the
Amalgamation Agreement, the TeleWest Agreement is hereby deemed to be a document
referred to in the Amalgamation  Agreement.  It is expressly  understood that if
the Amalgamation is not consummated,  Partners shall be entitled to exercise all
of its rights under the TeleWest Agreement without any obligation of any kind to
NTL.

     5. As a result of the entering into of the TeleWest Agreement,  the parties
agree that (i) the Rights of First  Refusal  relating to  Birmingham  Cable have
been  "Resolved";  provided that if, as of the Closing,  the BC Completion shall
not have taken  place or shall not be taking  place  contemporaneously  with the
Closing,  the Rights of First  Refusal  relating  to  Birmingham  Cable shall be
deemed to be  "Unresolved",  and (ii) the Rights of First  Refusal  relating  to
Cable London have been "Resolved".

     6. Unless  otherwise  specifically  defined  herein,  each term used herein
which is defined in the  Amalgamation  Agreement shall have the meaning assigned
to  such  term  in the  Amalgamation  Agreement.  Each  reference  to  "hereof",
"hereunder",  "herein" and "hereby" and each other  similar  reference  and each
reference  to "this  Agreement"  and each  similar  reference  contained  in the
Amalgamation  Agreement  shall  from  and  after  the date  hereof  refer to the
Amalgamation Agreement as amended hereby.


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     7. This Amendment shall be governed by and construed in accordance with the
laws of the  State of  Delaware  without  giving  effect  to the  principles  of
conflict of laws thereof.

     8. This  Amendment  may be signed in any  number of  counterparts,  each of
which shall be an original,  with the same effect as if the  signatures  thereto
and hereto were upon the same instrument.  This Amendment shall become effective
as of the date hereof.

     9. Except as amended hereby, all of the terms of the Amalgamation Agreement
shall remain and  continue in full force and effect and are hereby  confirmed in
all respects.






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     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Amendment to be
duly  executed by their  respective  authorized  officers as of the day and year
first above written.

                              NTL INCORPORATED


                              By: /s/ John Gregg
                                 ----------------------------
                                 Name: John Gregg
                                 Title: Managing Director, 
                                          Corporate Development


                              NTL (BERMUDA) LIMITED


                              By: /s/ Richard J. Lubasch
                                 ----------------------------
                                 Name: Richard J. Lubasch
                                 Title: Vice President


                              COMCAST UK CABLE PARTNERS LIMITED


                              By: /s/ Ken Mikalauskas
                                 ----------------------------
                                 Name: Ken Mikalauskas
                                 Title: Vice President, Finance




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