Transaction in Own Shares

BP PLC
27 July 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 27 July 2005

BP p.l.c. announces that on 26 July 2005, it purchased 11,430,000 ordinary
shares at prices between 630.50 pence and 641.00 pence per share and between
1094.17 cents and 1098.00 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above purchase, BP p.l.c. holds 450,015,724 ordinary shares in
Treasury, and has 21,051,302,910 ordinary shares in issue (excluding Treasury
shares).

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



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