Transaction in Own Shares

BP PLC
19 August 2005

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

BP p.l.c.  -  19 August 2005



BP p.l.c. announces that on 18 August 2005, it purchased 6,800,000 ordinary
shares at prices between 624.50 pence and 630.00 pence per share. The purchased
shares will all be held as Treasury shares.



Following the above purchase, BP p.l.c. holds 582,346,881 ordinary shares in
Treasury, and has 20,932,899,319 ordinary shares in issue (excluding Treasury
shares).



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


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