Transaction in Own Shares

BP PLC
11 July 2007


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 11 July 2007

BP p.l.c. announces that on 10 July 2007, it purchased for cancellation
2,400,000 ordinary shares at prices between 610.5 pence and 617.0 pence per
share.

Following the above transactions, BP p.l.c. holds 1,943,738,379 ordinary shares
in Treasury, and has 19,120,514,289 ordinary shares in issue (excluding Treasury
shares).

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



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