Transaction in Own Shares

BP PLC
23 March 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 23 March 2006

BP p.l.c. announces that on 22 March 2006, it purchased 6,076,000 ordinary
shares at prices between 649.50 pence and 660.00 pence per share and between
1145.17 cents and 1153.33 cents per share. The purchased shares will all be held
as Treasury shares.

BP p.l.c. also announces that on 22 March 2006 it transferred to participants in
its employee share schemes 15,621 ordinary shares at prices between 350.00 pence
and 511.00 pence. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,298,443,564 ordinary shares
in Treasury, and has 20,366,544,428 ordinary shares in issue (excluding Treasury
shares).

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



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