Transaction in Own Shares

BP PLC
26 May 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 26 May 2005

BP p.l.c. announces that on 25 May 2005, it purchased 2,207,000 ordinary shares
at prices between 546.00 pence and 550.00 pence per share. The purchased shares
will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 232,118,000 ordinary shares in
Treasury, and has 21,255,434,651 ordinary shares in issue (excluding Treasury
shares).


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



                      This information is provided by RNS
            The company news service from the London Stock Exchange