Transaction in Own Shares

BP PLC
12 September 2007





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

BP p.l.c.  -  12 September 2007



BP p.l.c. announces that on 11 September 2007, it purchased for cancellation
2,190,000 ordinary shares at prices between 559.00 pence and 563.50 pence per
share.

Following the above transactions, BP p.l.c. holds 1,942,142,012 ordinary shares
in Treasury, and has 19,039,204,955 ordinary shares in issue (excluding Treasury
shares).



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




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