Transaction in Own Shares

BP PLC
11 April 2006

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  11 April 2006

BP p.l.c. announces that on 10 April 2006, it purchased 2,250,000 ordinary
shares at prices between 687.50 pence and 693.00 pence per share and between
1204.17 cents and 1205.83 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,371,034,855 ordinary shares
in Treasury, and has 20,300,078,061 ordinary shares in issue (excluding Treasury
shares).

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


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