Transaction in Own Shares

BP PLC
05 May 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 5 May 2006

BP p.l.c. announces that on 4 May 2006, it purchased 9,000,000 ordinary shares
at prices between 677.5 pence and 686.0 pence per share and between 1242.50
cents and 1264.17 cents per share. The purchased shares will all be held as
Treasury shares.

Following the above transactions, BP p.l.c. holds 1,460,732,390 ordinary shares
in Treasury, and has 20,229,082,033 ordinary shares in issue (excluding Treasury
shares).

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



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