Transaction in Own Shares

BP PLC
03 October 2005


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

BP p.l.c.  -  03 October 2005


BP p.l.c. announces that on 30 September 2005, it purchased 5,440,000 ordinary
shares at prices between 674.50 pence and 682.50 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 651,110,481 ordinary shares in
Treasury, and has 20,983,962,129  ordinary shares in issue (excluding Treasury
shares).


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


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