Transaction in Own Shares

BP PLC
22 September 2005

BP p.l.c.  -  Transaction in Own Shares

BP p.l.c.  -  22 September 2005



BP p.l.c. announces that on 21 September 2005, it purchased 8,252,000 ordinary
shares at prices between 658.50 pence and 668.00 pence per share and between
1195.00 cents and 1199.17 cents per share. The purchased shares will all be held
as Treasury shares.



Following the above purchase, BP p.l.c. holds 607,135,081 ordinary shares in
Treasury, and has 20,916,154,818 ordinary shares in issue (excluding Treasury
shares).



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


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