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               03 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      27,887,543     2.85%     1,294,439       0.13%
securities
(2) Derivatives       81,580     0.01%       301,951       0.03%
(other than
options)
(3) Options and      712,275     0.07%       552,750       0.06%
agreements to
purchase/sell
Total             28,681,398     2.93%     2,149,140       0.22%


(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      1,000                39.7100
Purchase      1,753                39.1787
Purchase      7,600                39.5165
Purchase      45,000               40.0000
Purchase      12,895               39.2838
Purchase      842                  40.0000
Purchase      400                  38.9739
Purchase      628                  39.6000
Purchase      1,540                39.3438
Purchase      116                  39.6000
Purchase      231                  39.6000
Purchase      212                  39.2000
Purchase      466                  Transfer
Purchase      90,000               39.2000
Purchase      286                  39.6000
Purchase      17,417               39.2838
Purchase      173                  39.6000
Purchase      3,349                39.6000
Purchase      126,618              39.5535
Purchase      93                   39.6000
Sale          2,000                40.0500
Sale          6,737                39.1142
Sale          629                  39.9924
Sale          3,349                39.6000
Sale          29,189               39.6000
Sale          2,106                39.0318
Sale          466                  Transfer
Sale          754                  40.0000
Sale          4,000                39.0048
Sale          316                  77.4000 USD
Sale          18,000               39.0943
Sale          100                  38.9900
Sale          11,257               39.3380
Sale          5,756                39.9940
Sale          1,000                39.0500
Sale          6,498                40.0000
Sale          3,349                39.6000
Sale          842                  40.0000

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         400           38.9739
CFD            Short         773           39.0951
CFD            Short         528           39.1617
CFD            Short         1753          39.1786
CFD            Short         1540          39.3438
CFD            Short         7600          39.5165
CFD            Short         126618        39.5534
CFD            Long          4000          39.0048
CFD            Long          2106          39.0318
CFD            Long          18000         39.0943
CFD            Long          629           39.9924
CFD            Long          5756          39.9939

(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)
CALL            Purchase          250                40        EURO            20/03/2008        1.75


(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.

None


Is a Supplemental Form 8 attached? (Note 9)                 YES


Date of disclosure                         04 March 2008
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   150                    3,600.0000       EURO           20/03/2008
Option            Purchased   -140,000               34.0000          AMER           20/03/2008
Option            Purchased   -50,000                37.0000          AMER           20/03/2008
Option            Purchased   -500                   3,800.0000       EURO           20/03/2008
Option            Purchased   -500                   3,400.0000       EURO           20/03/2008
Option            Purchased   -500                   3,600.0000       EURO           20/06/2008
Option            Purchased   -500                   3,200.0000       EURO           20/03/2008
Option            Purchased   -350                   4,000.0000       EURO           20/03/2008
Option            Purchased   -360,000               36.0000          AMER           20/03/2008
Option            Purchased   -100                   4,000.0000       EURO           20/06/2008
Option            Purchased   360,000                42.0000          AMER           20/03/2008
Option            Purchased   250                    3,200.0000       EURO           20/03/2008
Option            Purchased   375                    4,800.0000       EURO           20/03/2008
Option            Purchased   400                    3,800.0000       EURO           20/06/2008
Option            Purchased   500                    3,400.0000       EURO           20/03/2008
Option            Purchased   600                    4,000.0000       EURO           20/03/2008
Option            Purchased   100,000                47.0000          AMER           19/09/2008
Option            Purchased   250,000                42.0000          AMER           20/03/2008
Option            Purchased   -300                   3,000.0000       EURO           20/03/2008


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