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               11 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      28,101,649     2.87%     1,119,122       0.11%
securities
(2) Derivatives       81,252     0.01%       172,710       0.02%
(other than
options)
(3) Options and    1,072,275     0.11%       913,250       0.09%
agreements to
purchase/sell
Total             29,255,176     2.99%     2,205,082       0.23%


(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      16,232               37.2214
Purchase      37,000               37.4200
Purchase      3,045                37.4414
Purchase      672                  37.4200
Purchase      2,474                36.9817
Purchase      105,189              37.3774
Purchase      927                  37.2061
Purchase      95,409               37.1298
Purchase      2,326                78.0000 CHF
Purchase      5,318                37.3643
Purchase      188                  37.3654
Purchase      1,716                37.8164
Sale          351                  73.7200 USD
Sale          100                  37.7732
Sale          105,189              37.3775
Sale          1,881                37.5855
Sale          6,498                37.4200
Sale          6,655                37.4144
Sale          82,711               37.3836
Sale          13,995               37.2439
Sale          365 76.              6100 USD
Sale          341                  37.3516
Sale          950                  37.8225
Sale          2,166                37.4200
Sale          23,860               37.3305
Sale          23,222               37.6488
Sale          1,092                37.0331
Sale          7,000                37.3329
Sale          2,474                36.9817
Sale          64,000               37.1172
Sale          5,156                37.2967


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         95409         37.1298
CFD            Short         927           37.2061
CFD            Short         16232         37.2213
CFD            Short         2001          37.3016
CFD            Short         5318          37.3642
CFD            Short         1044          37.7091
CFD            Short         1716          37.8164
CFD            Long          11573         37.1888
CFD            Long          5156          37.2967
CFD            Long          7000          37.3329
CFD            Long          6655          37.4143
CFD            Long          2422          37.5064
CFD            Long          1881          37.5855
CFD            Long          23222         37.6488
CFD            Long          100           37.7732
CFD            Long          950           37.8225

(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.

None


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


Date of disclosure                         12 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   -100                   4,000.0000       EURO           20/06/2008
Option            Purchased   -360,000               45.0000          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                   3,800.0000       EURO           20/03/2008
Option            Purchased   -500                   3,400.0000       EURO           20/03/2008
Option            Purchased   -500                   3,200.0000       EURO           20/03/2008
Option            Purchased   -350                   4,000.0000       EURO           20/03/2008
Option            Purchased   -300                   3,000.0000       EURO           20/03/2008
Option            Purchased   -360,000               36.0000          AMER           20/03/2008
Option            Purchased   -250                   3,400.0000       EURO           20/06/2008
Option            Purchased   360,000                40.0000          AMER           20/03/2008
Option            Purchased   150                    3,600.0000       EURO           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                42.0000          AMER           20/03/2008
Option            Purchased   -250                   3,400.0000       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