Transaction in Own Shares

BP PLC
13 April 2006

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  13 April 2006

BP p.l.c. announces that on 12 April 2006, it purchased 7,498,000 ordinary
shares at prices between 690.50 pence and 697.00 pence per share and between
1200.83 cents and 1215.00 cents per share. The purchased shares will all be held
as Treasury shares.

BP p.l.c. also announces that on 12 April 2006 it transferred to participants in
its employee share schemes 8,916 ordinary shares at prices between 350.00 pence
and 452.00 pence. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,387,003,939 ordinary shares
in Treasury, and has 20,285,955,696 ordinary shares in issue (excluding Treasury
shares).

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


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