Transaction in Own Shares

BP PLC
05 July 2007




BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 5 July 2007


BP p.l.c. announces that on 4 July 2007, it purchased for cancellation 1,300,000
ordinary shares at prices between 607.0 pence and 609.0 pence per share.

BP p.l.c. also announces that on 4 July 2007 it transferred to participants in
its employee share schemes 19,181 ordinary shares at prices between 350.0 pence
and 500.0 pence. These shares were previously held as treasury shares.

Following the above transactions, BP p.l.c. holds 1,943,738,379 ordinary shares
in Treasury, and has 19,127,491,703 ordinary shares in issue (excluding Treasury
shares).


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




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