Transaction in Own Shares

BP PLC
19 September 2007

BP p.l.c.  -  Transaction in Own Shares

BP p.l.c.  -  19 September 2007



BP p.l.c. announces that on 18 September 2007, it purchased for cancellation
2,185,000 ordinary shares at prices between 564.50 pence and 574.50 pence per
share.



Following the above transactions, BP p.l.c. holds 1,942,010,749 ordinary shares
in Treasury, and has 19,032,019,578 ordinary shares in issue (excluding Treasury
shares).





Enquiries: Fergus MacLeod, BP p.l.c.    Tel: [phone]




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