Transaction in Own Shares

BP PLC
12 April 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 12 April 2005


BP p.l.c. announces that on 11 April 2005, it purchased 2,200,000 ordinary
shares at prices between 557.50 pence and 563.50 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 135,285,000 ordinary shares in
Treasury, and has 21,349,445,741 ordinary shares in issue (excluding Treasury
shares).


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


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