Transaction in Own Shares

BP PLC
27 March 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 27 March 2006

BP p.l.c. announces that on 24 March 2006, it purchased 4,415,000 ordinary
shares at prices between 660.00 pence and 669.00 pence per share and between
1147.50 cents and 1165.50 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,308,999,564 ordinary shares
in Treasury, and has 20,356,769,434 ordinary shares in issue (excluding Treasury
shares).

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



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