Transaction in Own Shares

BP PLC
22 March 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 22 March 2005

BP p.l.c. announces that on 21 March 2005, it purchased 3,250,000 ordinary
shares at prices between 566.50 pence and 569.50 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 107,800,000 ordinary shares in
Treasury, and has 21,374,732,382 ordinary shares in issue (excluding Treasury
shares).

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



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