Transaction in Own Shares

BP PLC
04 October 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 04 October 2005

BP p.l.c. announces that on 3 October 2005, it purchased 4,200,000 ordinary
shares at prices between 671.00 pence and 678.00 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 655,310,481 ordinary shares in
Treasury, and has 20,980,152,819 ordinary shares in issue (excluding Treasury
shares).

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



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