Transaction in Own Shares

BP PLC
23 April 2007


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 23 April 2007

BP p.l.c. announces that on 20 April 2007, it purchased for cancellation
5,000,000 ordinary shares at prices between 567.5 pence and 574.0 pence per
share.

Following the above transaction, BP p.l.c. holds 1,943,911,624 ordinary shares
in Treasury, and has 19,237,297,097 ordinary shares in issue (excluding Treasury
shares).

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



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