Transaction in Own Shares

BP PLC
30 August 2007


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 30 August 2007

BP p.l.c. announces that on 29 August 2007, it purchased for cancellation
2,300,000 ordinary shares at prices between 537.5 pence and 543.5 pence per
share.

Following the above transactions, BP p.l.c. holds 1,943,679,378 ordinary shares
in Treasury, and has 19,052,516,073 ordinary shares in issue (excluding Treasury
shares).

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



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