Transaction in Own Shares

BP PLC
22 March 2006

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

BP p.l.c.  -  22 March 2006

BP p.l.c. announces that on 21 March 2006, it purchased 6,356,000 ordinary
shares at prices between 645.50 pence and 654.50 pence per share and prices
between 1136.50 cents and 1149.83 cents per share. The purchased shares will all
be held as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,292,383,185 ordinary shares
in Treasury, and has 20,371,983,090 ordinary shares in issue (excluding Treasury
shares).

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


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