Transaction in Own Shares

BP PLC
21 March 2006

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  21 March 2006


BP p.l.c. announces that on 20 March 2006, it purchased 7,313,000 ordinary
shares at prices between 657.00 pence and 664.500 pence per share and between
1150.6 cents and 1162.5 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,286,027,185 ordinary shares
in Treasury, and has 20,377,601,758 ordinary shares in issue (excluding Treasury
shares).



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


                      This information is provided by RNS
            The company news service from the London Stock Exchange