Transaction in Own Shares

BP PLC
16 May 2005

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

BP p.l.c.  -  16 May 2005



BP p.l.c. announces that on 13 May 2005, it purchased 3,550,000 ordinary shares
at prices between 526.00 pence and 531.50 pence per share. The purchased shares
will all be held as Treasury shares.



Following the above purchase, BP p.l.c. holds 207,581,000 ordinary shares in
Treasury, and has 21,279,798,889 ordinary shares in issue (excluding Treasury
shares).



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


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