Holding(s) in Company

BP PLC 30 September 2002 LETTER TO BP AMOCO PLC DATED 27 SEPTEMBER 2002 COMPANIES ACT 1985, (AS AMENDED) SECTIONS 198 TO 210A DISCLOSURE OF INTEREST IN SHARES In accordance with the above provisions we hereby give you notice that the Co- operative Insurance Society Limited holds, as beneficial owner, 1,550,538 BP Amoco 8% cum 1st Prf shares at the close of business on 27th September 2002 this being equal to 20.75% of the relevant issued share capital of 7,232,838. The decrease in our percentage holding is as a result of the following transaction: Date Transaction type Number of 8% cum prf shares 27/09/02 Stock Loan 50,000 Co-operative Insurance Society Limited holds the shares as beneficial owner. The notification given in this letter arises by virtue of approved stock lending activity undertaken by Co-operative Insurance Society Limited. You note also that Co-operative Insurance Society Limited has, under the terms of its stock lending agreement, the right to call for delivery to it of shares of an identical type, nominal value, description and amount to the securities lent. By virtue of section 208(5) of the Companies Act 1985, such right is deemed to be a notifiable interest in such securities. FROM: CO-OPERATIVE INSURANCE SOCIETY LIMITED This information is provided by RNS The company news service from the London Stock Exchange

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