Transaction in Own Shares

BP PLC
20 October 2006

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

BP p.l.c.  -  20 October 2006

BP p.l.c. announces that on 19 October 2006, it purchased for cancellation
8,600,000 ordinary shares at prices between 594.0 pence and 603.5 pence per
share and between 1117.67 cents and 1134.00 cents per share.

This purchase was bought as part of the close period contract announced on the
28th September 2006.

Following the above transactions, BP p.l.c. holds 1,947,547,562 ordinary shares
in Treasury, and has 19,707,667,066 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