Rule 8.3 - AMEC

FORM 8.3 DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE (Rule 8.3 of the City Code on Takeovers and Mergers) 1. KEY INFORMATION Name of person dealing BARCLAYS PLC (Note 1) Company dealt in AMEC Class of relevant security ORD GBP0.50 to which the dealings being disclosed relate (Note 2) Date of dealing 27 November 2006 2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE (a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3) Long Short Number (%) Number (%) (1) Relevant 12,739,040 3.82% 1,223,306 0.37% securities (2) Derivatives 1,172,942 0.35% 2,348,493 0.70% (other than options) (3) Options and 0 0.00% 0 0.00% agreements to purchase/sell Total 13,911,982 4.17% 3,571,799 1.07% (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of Long Short relevant security: Number (%) Number (%) (1) Relevant securities (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total (c) Rights to subscribe (Note 3) Class of relevant security: Details 3. DEALINGS (Note 4) (a) Purchases and sales Purchase/sale Number of Securities Price per unit (GBP) Purchase 36 4.1283 Purchase 3,045 4.1333 Purchase 1,698 4.1322 Purchase 3,955 4.1721 Purchase 2,396 4.1100 Sale 1,200 4.1610 Sale 52,800 4.1478 Sale 400 4.1786 Sale 13,900 4.1389 Sale 1,609 4.1500 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per unit (e.g. CFD) (Note 6) Securities (GBP) CFD Short 36 4.1283 CFD Short 1698 4.1322 CFD Short 3045 4.1332 CFD Short 3955 4.1721 CFD Long 13900 4.1389 CFD Long 52800 4.1477 (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name, Writing, Number of Exercise Type, e.g. Expiry Option money e.g. call selling, securities to price American, date paid/received option purchasing, which the option European etc. per unit (GBP) varying etc. relates (GBP) (ii) Exercising Product name, e.g. Number of Exercise price per call option securities unit (Note 5) (d) Other dealings (including new securities) (Note 4) Nature of transaction Details Price per unit (Note 8) (if applicable) (Note 5) 4. OTHER INFORMATION Agreements, arrangements or understandings relating to options or derivatives Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated. Is a Supplemental Form 8 attached? (Note 9) NO Date of disclosure 28 November 2006 Contact name BARCLAYS COMPLIANCE Telephone number 020 7116 2913 If a connected EFM, name of offeree/offeror with which connected If a connected EFM, state nature of connection (Note 10) Notes The Notes on Form 8.3 can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk

Companies

Barclays (BARC)
UK 100

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