Transaction in Own Shares

BP PLC
05 October 2007


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

BP p.l.c. announces that on 4 October 2007, it purchased for cancellation
1,731,966 ordinary shares at prices between 562.00 pence and 564.50 pence per
share.

BP p.l.c. also announces that on 4 October 2007 it transferred to participants
in its employee share schemes 82,852 ordinary shares at prices between 386.00
pence and 452.00 pence. These shares were previously held as treasury shares.

Following the above transactions BP p.l.c. holds 1,941,666,603 ordinary shares
in Treasury, and has 19,011,066,062 ordinary shares in issue (excluding Treasury
shares).

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




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