Transaction in Own Shares

BP PLC
22 September 2006



BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  22 September 2006


BP p.l.c. announces that on 21 September 2006, it purchased for cancellation
9,150,000 ordinary shares at prices between 572.0 pence and 577.0 pence per
share.

Following the above transaction, BP p.l.c. holds 1,948,078,081 ordinary shares
in Treasury, and has 19,845,113,162 ordinary shares in issue (excluding Treasury
shares).


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




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