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               20 December 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        12,516,258    3.75%     1,191,557      0.36%
securities
(2) Derivatives      1,119,128    0.34%     2,118,607      0.64%
(other than
options)
(3) Options and              0    0.00%             0      0.00%
agreements to
purchase/sell

Total               13,635,386    4.09%     3,310,164      0.99%


(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      2,872                Transfer
Purchase      43,012               4.3009
Purchase      2,899                4.3000
Purchase      109                  4.3405
Sale          3,000                4.3600
Sale          13,560               4.3000
Sale          11,000               4.3675
Sale          4,064                4.2937
Sale          22,600               4.3031
Sale          24,600               4.3050
Sale          36,577               4.3439
Sale          14,500               4.3571
Sale          2,326                4.3000
NB: The below transactions which were disclosed on 14/12/2006 have been cancelled
Purchase/Sale Number of Securities Price per unit (GBP)
Sale          22,600               4.3031


 (b) Derivatives transactions (other than options)

Product name,   Long/Short       Number of       Price per unit
(e.g. CFD)      (Note 6)         Securities      (GBP)
CFD             Short            43012           4.3008
CFD             Short            109             4.3404
CFD             Long             24600           4.3050
CFD             Long             21578           4.3428
CFD             Long             14999           4.3453
CFD             Long             14500           4.3571
CFD             Long             3000            4.3600
CFD             Long             11000           4.3675


(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                         21 December 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