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               07 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      28,111,703     2.88%     1,339,107       0.14%
securities
(2) Derivatives       80,848     0.01%       268,765       0.03%
(other than
options)
(3) Options and    1,072,275     0.11%       912,750       0.09%
agreements to
purchase/sell
Total             29,264,826     2.99%     2,520,622       0.26%


(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      6,048                39.2700
Purchase      1,800                39.1839
Purchase      385                  39.3671
Purchase      246                  39.3906
Purchase      9,125                39.3600
Purchase      385                  39.2630
Purchase      264                  39.3600
Purchase      4,082                39.8217
Purchase      5,612                39.3600
Purchase      30,000               39.3600
Sale          7,281                39.3600
Sale          29,645               39.2966
Sale          6,315                39.2961
Sale          312                  39.6821
Sale          6,900                39.2426
Sale          3,677                39.3000
Sale          9,439                39.1870
Sale          6,498                39.3600
Sale          119,928              39.2391
Sale          50,946               39.2378
Sale          928                  39.3600
Sale          618                  39.3525
Sale          29,810               39.3038
Sale          5,424                39.3541
Sale          385                  39.4229
Sale          2,998                39.7511


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         1800          39.1839
CFD            Short         6048          39.27
CFD            Short         385           39.367
CFD            Short         4082          39.8217
CFD            Long          9439          39.1869
CFD            Long          50946         39.2378
CFD            Long          119928        39.2391
CFD            Long          6900          39.2426
CFD            Long          23769         39.2848
CFD            Long          6315          39.2961
CFD            Long          5876          39.3443
CFD            Long          618           39.3525
CFD            Long          5424          39.354
CFD            Long          385           39.4229
CFD            Long          2998          39.7511

(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                         10 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   -360,000               36.0000          AMER           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                   3,600.0000       EURO           20/06/2008
Option            Purchased   -500                   3,400.0000       EURO           20/03/2008
Option            Purchased   -500                   3,200.0000       EURO           20/03/2008
Option            Purchased   -500                   3,800.0000       EURO           20/03/2008
Option            Purchased   -350                   4,000.0000       EURO           20/03/2008
Option            Purchased   -360,000               45.0000          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   360,000                40.0000          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