SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 11-K


         (Mark One)

[ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE
      SECURITIES EXCHANGE ACT OF 1934

      For fiscal year ended December 31, 2000
                            -----------------

                                       OR

[   ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE
      SECURITIES EXCHANGE ACT OF 1934

      For the transition period from            to
                                     ----------    ---------

Commission file number 1-6262
                       ------

A.    Full title of the plan and the address of the plan,
      if different from that of the issuer named below:

                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                             200 East Randolph Drive
                             Chicago, Illinois 60601

B.    Name of issuer of the securities held pursuant to
      the plan and the address of its principal executive
      office:

                                    BP p.l.c.
                                 Britannic House
                                1 Finsbury Circus
                             London EC2M 7BA England












                                    SIGNATURE
                                    ---------



The Plan.

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
trustees (or other persons who administer  the employee  benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned hereunto
duly authorized.









                                    Atlantic Richfield Capital Accumulation Plan

                                    By Plan Administrator



Date:   June 27, 2001               /s/ Donald E. Packham
        -------------               -------------------------
                                    Donald E. Packham
                                    Senior Vice President of Human Resources
                                    BP Corporation North America Inc.
















                         Report of Independent Auditors



To the Investment Committee of BP Corporation North America Inc.


We have audited the accompanying  statements of assets available for benefits of
the Atlantic  Richfield  Capital  Accumulation  Plan as of December 31, 2000 and
1999, and the related  statement of changes in assets available for benefits for
the  year  ended  December  31,  2000.   These  financial   statements  are  the
responsibility  of the Plan'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 assets available for benefits of the Plan at December
31, 2000 and 1999, and the changes in its assets  available for benefits for the
year ended December 31, 2000, in conformity with accounting principles generally
accepted in the United States.


                                                              ERNST & YOUNG LLP


Chicago, Illinois
June 25, 2001










                                                               E.I.N. 36-1812780
                                                                        Plan 059



                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

                   STATEMENTS OF ASSETS AVAILABLE FOR BENEFITS

                             (thousands of dollars)

                                                         December 31,
                                                         -----------
                                                    2000               1999
                                                 ---------           ---------
Investment in BP Amoco Master Trust for
  Employee Savings Plan                          $1,540,960          $        -
Investments, at fair value                                -           1,815,568
Other assets                                              -                 494
                                                 ----------          ----------

Assets available for benefits                    $1,540,960          $1,816,062
                                                 ==========          ==========











        The accompanying notes are an integral part of these statements.





                                                               E.I.N. 36-1812780
                                                                        Plan 059

                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

              STATEMENT OF CHANGES IN ASSETS AVAILABLE FOR BENEFITS
                      FOR THE YEAR ENDED DECEMBER 31, 2000

                             (thousands of dollars)

Additions of assets attributed to:
  Net investment loss in BP Amoco Master Trust
      for Employee Savings Plan for the period
      from July 21, 2000 to December 31, 2000                       $  (153,747)
  Net appreciation (depreciation) in fair value
      of investments:
        BP Amoco p.l.c. ADSs                                             79,844
        ARCO common stock                                               (78,283)
        Vastar common stock                                                 626
        Registered investment companies                                  13,143
        Other common stocks                                               4,094
  Dividends and interest                                                 16,881
  Participant contributions                                              43,554
  Rollover contributions                                                 86,867
  Employer contributions                                                 28,231
  Transfer of assets from other BP sponsored plans                        2,125
                                                                     -----------

       Total Additions                                                   43,335
                                                                     -----------

Deductions of assets attributed to:
  Administrative expenses                                                   (19)
  Distributions to participants                                        (306,793)
  Transfer of assets to the Thrift Plan of
    Phillips Petroleum Company                                          (11,625)
                                                                    -----------

     Total Deductions                                                  (318,437)
                                                                    -----------

Net decrease in assets during the year                                 (275,102)

Assets available for benefits:
 Beginning of year                                                    1,816,062
                                                                    -----------

 End of year                                                        $ 1,540,960
                                                                    ===========

The accompanying notes are an integral part of these statements.




                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                  ----------

                          Notes to Financial Statements

1.  DESCRIPTION OF PLAN
    -------------------

     The Atlantic Richfield Capital  Accumulation Plan (the "Plan") is a defined
contribution plan for current and former employees of Atlantic Richfield Company
and participating  subsidiaries (the "Company" or "ARCO").  The Plan was amended
and restated effective April 18, 2000.

     The  following  brief  description  of the  Plan is  provided  for  general
information  only. Unless otherwise  indicated,  all descriptions in these notes
relate to the Plan as it existed in 2000.  Participants should refer to the Plan
document for more complete  information.  The Company reserves the right to make
any changes or to terminate the Plan.  The Plan is subject to the  provisions of
the Employee Retirement Income Security Act of 1974 ("ERISA").

     The purpose of the Plan is to  encourage  eligible  employees  to regularly
save  part of their  earnings  and to  assist  them in  accumulating  additional
security  for  their  retirement.   The  Plan  provides  that  both  participant
contributions and Company matching  contributions  will be held in a trust by an
independent trustee for the benefit of participating  employees. The trustee was
Fidelity Management Trust Company. Effective as of the close of business on July
20, 2000, net assets of the Plan were transferred into the BP Amoco Master Trust
for Employee Savings Plans (the "Master Trust"). The trustee of the Master Trust
is State  Street Bank and Trust.  The name of the Master Trust was changed to BP
Master Trust for Employee Savings Plans effective January 1, 2001.

     Fidelity  Investments  Institutional  Services Company,  Inc. is the Plan's
recordkeeper.  The  Company  was the Plan  sponsor and an officer of the Company
served as Plan  administrator.  Effective  April 18, 2000, BP Corporation  North
America Inc.  ("BP")  became the Plan  sponsor and the Senior Vice  President of
Human  Resources  became the Plan  administrator.

     Prior to April 18, 2000,  the portion of a  participant's  account  derived
from the  participant's own contributions and earnings thereon could be invested
in any combination of investment  options offered by the Plan. When investing in
ARCO common stock,  the  participant was able to designate that the common stock
be held either in the employee stock  ownership plan ("ESOP") fund (that part of
the Plan qualified as an ESOP under Section  4975(e)(7) of the Internal  Revenue
Code) or in the non-ESOP  fund.  The  dividends on common stock held in the ESOP
fund were paid to the  participant,  while the dividends on common stock held in
the  non-ESOP  fund  were  reinvested  in  ARCO  common  stock  and  held in the
participant's account.





                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

                    Notes to Financial Statements (continued)

     The portion of a participant's  account derived from  contributions  by the
Company  was  invested  in ARCO  common  stock  held in the  ESOP  fund  and the
dividends on the common stock were paid to the participant.

     On April 18, 2000,  the merger of a subsidiary of BP Amoco p.l.c.  and ARCO
was  completed.  Pursuant  to the merger  agreement,  each share of  outstanding
common  stock of ARCO was  converted  into the  right to  receive  1.64 BP Amoco
p.l.c. American Depositary Shares ("BP Amoco ADSs"). In addition,  the following
changes to the Plan occurred as of the date of merger:

     1) The  ARCO  stock  dividend-paid-out  option  was  eliminated.  All
        dividends  derived  from BP Amoco ADSs in the Plan were  reinvested
        in the Plan and used to purchase additional BP Amoco ADSs.

     2) Employees  are able to exchange any/all  BP Amoco  ADSs held in the
        Plan.  There are no  restrictions  on a participant's  ability to
        exchange  BP Amoco ADSs in the Plan.

     3) BP Amoco ADSs in the Plan  associated  with the pre-1987  ESOP became
        available for withdrawals and loans under normal Plan rules for
        withdrawals and loans.

     In June 2000, modifications were made to the Plan's core investment options
to match the BP Employee Savings Plan. Effective with the transfer of the Plan's
assets  into the  Master  Trust,  the core  funds  were  transferred  to similar
investment options available in the Master Trust.  Individual shares of BP Amoco
ADSs were merged into the commingled BP Amoco Stock Fund. Participants no longer
hold individual shares, rather they own units of the BP Amoco Stock Fund.

     Under the Plan,  participants may contribute up to 27% of their base pay up
to  Internal  Revenue  Service  ("IRS")  limits.   The  Company  makes  matching
contributions  to  the  participant's  account  at  160%  of  the  participant's
contribution,  up to a maximum Company  contribution of 8% of the  participant's
base salary.  Participants may also roll over amounts representing distributions
from other qualified plans.  Company  contributions made prior to April 18, 2000
were made in the form of ARCO common  stock or cash to be used to purchase  ARCO
common stock. Contributions made between April 18 and July 20, 2000 were made in
the form of BP Amoco ADSs.  After July 20, 2000,  Company  contributions  in the
form of cash are initially invested in the BP Amoco Stock Fund. Participants may
elect to sell any portion of their investment  fund(s) and reinvest the proceeds
in one or more of the other available investment alternatives.




                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

                    Notes to Financial Statements (continued)

     All  contributions  and  earnings  are fully  and  immediately  vested  and
nonforfeitable.  The benefit to which a  participant  is entitled is the benefit
which can be provided by the participant's account balance.

     All reasonable and necessary Plan  administrative  expenses are paid out of
the Master Trust or paid by the Company. Generally, fees and expenses related to
investment  management of each investment  option are paid out of the respective
funds.  As a result,  the returns on those  investments  are net of the fees and
expenses of the managers of those investment options and certain other brokerage
commissions  and other  fees and  expenses  incurred  in  connection  with those
investments.

     In 2000,  the Company  sold its Alaskan  operations  to Phillips  Petroleum
Company ("Phillips"). Employees had the option to transfer their account balance
to a Phillips'  qualified plan or keep their account balance in the Plan. During
2000,  assets  totaling $11.6 million were  transferred to a Phillips  sponsored
savings plan.

2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
    ------------------------------------------

Method of  Accounting.  The financial  statements of the Plan are prepared under
the accrual method of accounting.

Estimates. The preparation of financial statements in conformity with accounting
principles  generally  accepted  in the United  States  requires  estimates  and
assumptions that affect certain reported  amounts.  Actual results may differ in
some cases from the estimates.

Investment  Valuation.  All  investments  of the Master  Trust,  except as noted
below, are stated at fair value generally as determined by quoted closing market
prices,  if  available.  Investments  in  guaranteed  investment  contracts  and
synthetic  guaranteed  investment contracts are valued at contract value because
they are fully benefit responsive. The Master Trust's interest in the guaranteed
investment contracts and synthetic guaranteed  investment contracts with managed
portfolio  companies and insurance  companies  represents the maximum  potential
credit loss from concentrations of credit risk associated with its investment in
these contracts.  Money market  investments and loans to participants are valued
at cost which  approximates  fair value.  Other  investments for which no quoted
closing  market  prices are  available are valued at fair value as determined by
the Trustee based on the advice of its investment consultants.







                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

                    Notes to Financial Statements (continued)

     Prior to July 21,  2000,  investments  in common  stock were valued at fair
value based on quoted  closing  market prices in an active market as of the last
business day of the Plan's fiscal year.  Investments  in  registered  investment
companies  were  valued at net asset  value as of the last  business  day of the
Plan's  fiscal year.  Net asset value is the fair value of all  securities  plus
accruals  for  dividend  income,  interest  income,  and  investment  management
expenses.  Certain other  investments  were held in short-term  investment funds
managed by the Plan trustee.  Money market investments and loans to participants
were valued at cost which approximates fair value.

New  Accounting  Standard.  The Master Trust is required to adopt the  Financial
Accounting  Standards Board Statement of Financial Accounting Standards No. 133,
"Accounting for Derivative  Instruments and Hedging  Activities" ("SFAS 133") on
January  1,  2001.  SFAS  133  requires  the  recognition  of gains  and  losses
associated with  derivative  instruments as a change in net assets in the period
of change. The adoption of SFAS 133 is not expected to have a material impact on
the financial statements of the Plan or the Master Trust.

3.  PARTICIPANT LOANS
    -----------------

     Participants  are  eligible  to borrow from their  account  balances in the
Plan.  Loans  are made in the form of cash and the  amount  may not  exceed  the
lesser of 50 percent of the market  value of the total  accounts or $50,000 less
the highest loan balance  outstanding  during the preceding  twelve months.  The
interest  rate charged is a fixed rate equal to the average  prime rate reported
in The Wall Street  Journal as of the last  business day of the month  preceding
the  date  the  loan  application  is  received  by  the  Plan's  Administrative
Committee.  A loan may be taken by  participants  for a period  from one to five
years, although residential loans may be repaid over a period of up to 15 years,
as determined by the  participant.  Repayment of loan  principal and interest is
generally made by payroll deductions and credited to the participant's account.






                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

                    Notes to Financial Statements (continued)

4.  INVESTMENTS
    -----------

     The following presents  investments that represent 5 percent or more of the
Plan's net assets as of December 31, 1999.

                                                               December 31,
                                                                   1999
                                                               -------------
                                                          (thousands of dollars)

       ARCO common stock (6,604,554 shares)                      $ 571,294*
       ARCO common stock (3,650,752 shares)                        315,790
                                                                 ---------
       Total ARCO common stock                                   $ 887,084

       Equity Fund (2,045,048 shares)                            $ 317,044

       Money Market Fund                                         $ 179,326

       *Nonparticipant directed

5.  INCOME TAX STATUS
    -----------------

     The IRS ruled May 14, 1998, that the Plan qualifies under Section 401(a) of
the Internal  Revenue Code (the "IRC") and  therefore  the related  trust is tax
exempt  under  Section  501(a)  of the IRC.  The Plan  has  been  amended  since
receiving the  determination  letter.  However,  the Plan  Administrator and the
Company's  tax counsel  believe the Plan  continues to meet the  applicable  tax
qualification  requirements  of the IRC. The Plan sponsor  reserves the right to
make any amendments  necessary to maintain the continued qualified status of the
Plan and Master Trust.

6.   MASTER TRUST
     ------------

     Effective as of the close of business on April 6, 2000,  the assets held in
the BP America Master Trust and the net assets of the BP Amoco Employee  Savings
Plan were transferred into the Master Trust.

     The net assets of the Atlantic Richfield Capital  Accumulation Plan, Vastar
Resources,  Inc. Capital  Accumulation Plan and CH-Twenty  Capital  Accumulation
Plan  were  transferred  into the  Master  Trust  effective  as of the  close of
business on July 20, 2000.

     The beneficial  interest of the plans in the Master Trust is adjusted daily
to reflect the effect of income  collected and accrued,  realized and unrealized
gains and losses, contributions and withdrawals, and all other transactions. The
Master Trust  constitutes a single  investment  account as defined in the master
trust reporting and disclosure rules and regulations of the Department of Labor.




                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

                    Notes to Financial Statements (continued)


6.   MASTER TRUST (continued)
     -----------------------

     As of December 31, 2000, the Plan's percentage interest in the Master Trust
was  18.15%.  The net assets of the Master  Trust as of  December  31,  2000 and
changes  in net  assets of the  Master  Trust  for the  period  from  April 7 to
December 31, 2000 are as follows:



                             STATEMENT OF NET ASSETS

                             (thousands of dollars)

                                                               December 31, 2000
                                                               -----------------
     Investments
         BP Amoco p.l.c. American Depositary
               Shares ("BP Amoco ADSs")                          $    3,641,986
         Registered investment companies                              1,537,818
         Common collective trust funds                                1,440,725
         Money market investments                                       975,241
         Synthetic guaranteed investment contracts                      636,041
         Guaranteed investment contracts                                108,875
         Government-backed obligations                                    5,037
         Loans to participants                                          134,779
         Other                                                            2,941
                                                                 --------------

            Total investments                                         8,483,443

     Dividends and interest receivable                                    5,424
     Contributions receivable                                               190
                                                                 --------------

            Total assets                                              8,489,057

     Operating payables                                                  (1,137)
                                                                 --------------

            Net assets                                           $    8,487,920
                                                                 ==============










                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN

                                   ----------

                    Notes to Financial Statements (continued)


6.   MASTER TRUST (continued)
     -----------------------

                       STATEMENT OF CHANGES IN NET ASSETS
                FOR THE PERIOD FROM APRIL 7 TO DECEMBER 31, 2000
                             (thousands of dollars)

Additions of assets attributed to:
   Participant contributions                                        $   112,097
   Rollover contributions                                                90,042
   Employer contributions                                                79,989
   Net realized and unrealized appreciation (depreciation)
      in fair value of investments:
         BP Amoco ADSs                                                 (201,566)
         Vastar common stock                                                365
         Registered investment companies                               (337,024)
         Common collective trust funds                                 (127,494)
   Transfer of assets from BP sponsored Plans                         9,381,997
   Transfer of assets from Maxus Energy Corp. sponsored
      savings plan                                                        5,493
   Interest and dividends                                               174,036
                                                                    -----------

          Total additions                                             9,177,935
                                                                    -----------

Deductions of assets attributed to:
   Distributions to participants                                       (676,015)
   Transfer of assets of ProCare Automotive Service
      Centers employees to Sullivan Acquisition, LLC
      sponsored savings plan                                               (749)
   Transfer of assets to the Thrift Plan of Phillips
      Petroleum Company                                                 (11,625)
   Transfer of assets to MCI WorldCom sponsored
      savings plan                                                         (349)
   Administrative expenses                                               (1,277)
                                                                    -----------

          Total deductions                                             (690,015)
                                                                    -----------

Net increase in assets during the period                              8,487,920

Net assets

   Beginning of period                                                        -
                                                                    -----------

   End of period                                                    $ 8,487,920
                                                                    ===========




                  ATLANTIC RICHFIELD CAPITAL ACCUMULATION PLAN








                                    Exhibits









Exhibit No.                             Description
- ----------                              -----------


    23                                  Consent of Independent Auditors