Transaction in Own Shares

BP PLC
21 April 2006

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  21 April 2006


BP p.l.c. announces that on 20 April 2006, it purchased 3,000,000 ordinary
shares at prices between 701.00 pence and 710.00 pence per share. The purchased
shares will all be held as Treasury shares.


Following the above transaction, BP p.l.c. holds 1,399,302,334 ordinary shares
in Treasury, and has 20,277,717,820 ordinary shares in issue (excluding Treasury
shares).


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


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