Transaction in Own Shares

BP PLC
28 September 2007


28th September 2007

BP plc
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BP share repurchase programme
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BP plc announces that it has in place a buy-back programme, managed by an
independent third party which makes its trading decisions in relation to BP's
securities independently of, and uninfluenced by BP. The programme starts on 1st
October 2007 and ends on 23rd October 2007. The shares purchased on behalf of BP
plc are for cancellation.

The aim of the programme is to reduce the issued share capital of BP plc.

Any acquisitions will be effected within certain pre-set parameters, and in
accordance with both BP's general authority to repurchase shares and Chapter 12
of the Listing Rules which requires that the maximum price paid be limited to no
more than 105 per cent of the average middle market closing price of BP shares
for the 5 dealing days preceding the date of purchase. The company confirms that
it currently has no inside information.

Further enquiries:
BP Press Office: [phone]




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