Transaction in Own Shares

BP PLC
10 June 2005

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  10 June 2005


BP p.l.c. announces that on 9 June 2005, it purchased 3,010,000 ordinary shares
at prices between 555.00 pence and 563.00 pence per share. The purchased shares
will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds   266,063,000 ordinary shares in
Treasury, and has   21,222,161,072 ordinary shares in issue (excluding Treasury
shares).

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


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