Transaction in Own Shares

BP PLC
17 June 2005

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  17 June 2005

BP p.l.c. announces that on 16 June 2005, it purchased 3,825,000 ordinary shares
at prices between 571.50 pence and 578.00 pence per share. The purchased shares
will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds   283,438,000 ordinary shares in
Treasury, and has 21,205,720,771 ordinary shares in issue (excluding Treasury
shares).

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


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