Transaction in Own Shares

BP PLC
28 August 2007


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 28 August 2007

BP p.l.c. announces that on 24 August 2007, it purchased for cancellation
2,255,000 ordinary shares at prices between 545.50 pence and 555.00 pence per
share.

Following the above transactions, BP p.l.c. holds 1,943,679,378 ordinary shares
in Treasury, and has 19,057,063,139 ordinary shares in issue (excluding Treasury
shares).

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



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