Transaction in Own Shares

BP PLC
03 April 2007


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 3 April 2007

BP p.l.c. announces that on 2 April, it purchased for cancellation 5,057,000
ordinary shares at prices between 546.48 pence and 554.50 pence per share.

This purchase was bought as part of the close period contract announced on the
30th March 2007.

Following the above transaction, BP p.l.c. holds 1,943,965,179 ordinary shares
in Treasury, and has 19,285,107,007 ordinary shares in issue (excluding Treasury
shares).

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



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