Transaction in Own Shares

BP PLC
05 October 2005

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  05 October 2005


BP p.l.c. announces that on 4 October 2005, it purchased 7,672,000 ordinary
shares at prices between 655.00 pence and 666.00 pence per share and between
1143.8 cents and 1152.5 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above purchase, BP p.l.c. holds 662,982,481 ordinary shares in
Treasury, and has 20,972,768,835 ordinary shares in issue (excluding Treasury
shares).


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


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