Rule 8.3 - XSTRATA PLC

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              XSTRATA PLC
Class of relevant security    ORD USD0.50
to which the dealings being
disclosed relate (Note 2)
Date of dealing               28 December 2007

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      27,239,353      2.80%      651,695       0.07%
securities
(2) Derivatives      173,248      0.02%      177,675       0.02%
(other than
options)
(3) Options and        1,550      0.00%          500       0.00%
agreements to
purchase/sell
Total             27,414,151      2.82%       829,870      0.09%


(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      8,778                36.0600
Purchase      81                   35.8759
Purchase      81,160               36.0535
Purchase      31,494               35.9553
Purchase      400                  35.8341
Purchase      19,552               35.9649
Purchase      31,480               36.1867
Purchase      1,174                35.9300
Purchase      36,337               35.9916
Purchase      102,992              36.0347
Purchase      8,778                36.0600
Purchase      102,992              36.0347
Purchase      35,175               35.9432
Purchase      3,600                35.8386
Purchase      2,280                35.9986
Purchase      4,332                35.9300
Sale          36,337               35.9916
Sale          31,480               36.1867
Sale          35,175               35.9432
Sale          2,280                35.9918
Sale          19,552               35.9616
Sale          102,992              36.0347
Sale          81,160               36.0535
Sale          31,494               35.9521
Sale          400                  35.8341
Sale          1,400                35.9300
Sale          36,337               35.9916
Sale          8,778                36.0600
Sale          400                  35.8341
Sale          35,175               35.9432
Sale          81                   35.8691
Sale          3,600                35.8386
Sale          5,124                35.9300

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         9219          35.9632
CFD            Short         10333         35.9663
CFD            Short         2280          35.9986
CFD            Short         81160         36.0534
CFD            Short         8778          36.06
CFD            Long          400           35.8341
CFD            Long          3600          35.8386
CFD            Long          81            35.8691
CFD            Long          25709         35.9498
CFD            Long          5785          35.9619
CFD            Long          550           36.0496
CFD            Long          2412          36.2403


NB: The below transactions which were previously disclosed have been cancelled
Deal Date    Long/Short    Number of Securities    Price per unit (GBP)
27/12/2007   Short         2,412                   36.2403
24/12/2007   Long          550                     36.0496

(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
None

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)                 YES


Date of disclosure                         31 December 2007
Contact name                               Geoff Smith
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

SUPPLEMENTAL FORM 8

DETAILS OF OPEN POSITIONS
(This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate)

OPEN POSITIONS (Note 1)
Product name,     Written or  Number of securities   Exercise price   Type, e.g.     Expiry date
e.g. call option  purchased   to which the option    (Note 2)         American,
                              or derivative relates                   European etc.
Option            Purchased   500                    3,400.0000       EURO           20/03/2008
Option            Purchased   400                    3,800.0000       EURO           20/06/2008
Option            Purchased   250                    3,200.0000       EURO           20/03/2008
Option            Purchased   250                    3,200.0000       EURO           20/03/2008
Option            Purchased   150                    4,000.0000       EURO           20/06/2008
Option            Purchased   -500                   3,600.0000       EURO           20/06/2008


Notes

1. Where there are open option positions or open derivative positions (except for CFDs), full details should be given.
Full details of any  existing agreements to purchase or to sell  should also be given on this form.

2. For all prices and other monetary amounts, the currency must be stated.

For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover
Panel's website at www.thetakeoverpanel.org.uk