Rule 8.1- Foseco plc

Cookson Group PLC
14 March 2008


                                                                            FORM
      8.1

          DEALINGS BY OFFERORS, OFFEREE COMPANIES OR THEIR ASSOCIATES

                  FOR THEMSELVES OR FOR DISCRETIONARY CLIENTS

                 (Rules 8.1(a) and (b)(i) of the Takeover Code)





1.         KEY INFORMATION


Name of person dealing (Note 1)                   Cookson Group plc
Company dealt in                                  Foseco plc
Class of relevant security to which the dealings  Ordinary shares of 25 pence each
being disclosed relate (Note 2)

Date of dealing                                   13 March 2008






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 securities                           1 (0.00%)



(2) Derivatives (other than options)


(3) Options and agreements to purchase/sell


Total                                             1 (0.00%)






(b)        Interests and short positions in relevant securities of the company,
other than the class dealt in (Note 3)


Class of relevant security:                                  Long                        Short


                                                  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 (Note 5)


Purchase                                  1 (0.00%)                           293.00 pence





(b)        Derivatives transactions (other than options)


Product name,           Long/short (Note 6)         Number of securities      Price per unit (Note 5)
                                                    (Note 7)
e.g. CFD










(c)        Options transactions in respect of existing securities

(i)         Writing, selling, purchasing or varying


Product name,     Writing, selling,    Number of    Exercise    Type, e.g.      Expiry    Option money
                  purchasing, varying  securities               American,
e.g. call option  etc.                 to which the price       European etc.   date      paid/received per
                                       option                                             unit (Note 5)
                                       relates
                                       (Note 7)






(ii)        Exercising


Product name, e.g. call option          Number of securities                   Exercise price per unit
                                                                               (Note 5)






(d)        Other dealings (including new securities) (Note 4)


Nature of transaction (Note 8)            Details                             Price per unit (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.


None







Is a Supplemental Form 8 attached? (Note 9)
            NO




Date of disclosure                                                        14 March 2008

Contact name                                                              Richard Malthouse

Telephone number                                                          020 7822 0000

Name of offeree/offeror with which associated                             Cookson Group plc
Specify category and nature of associate status (Note 10)






Notes





The Notes on Form 8.1 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk












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