Transaction in Own Shares

BP PLC
20 March 2006

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

BP p.l.c.  -  20 March 2006

BP p.l.c. announces that on 17 March 2006, it purchased 6,325,000 ordinary
shares at prices between 661.00 pence and 669.00 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,278,714,185 ordinary shares
in Treasury, and has  20,383,832,342 ordinary shares in issue (excluding
Treasury shares).

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


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