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               12 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      28,400,135     2.90%     1,019,333       0.10%
securities
(2) Derivatives       87,782     0.01%       342,640       0.04%
(other than
options)
(3) Options and    1,072,475     0.11%       913,250       0.09%
agreements to
purchase/sell
Total             29,560,392     3.02%     2,275,223       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      105,530              38.4427
Purchase      855                  38.5300
Purchase      184                  38.8929
Purchase      4,770                79.4220 CHF
Purchase      42,000               38.8500
Purchase      32                   38.4772
Purchase      6,655                38.5614
Purchase      33,092               38.4588
Purchase      319                  37.9900
Purchase      128                  38.0000
Purchase      64,000               38.6937
Purchase      80                   38.6419
Purchase      50,261               38.3046
Purchase      613                  38.5369
Purchase      34,311               38.5300
Purchase      6,950                79.4220 CHF
Purchase      2,285                38.5300
Purchase      9,900                38.4050
Purchase      653                  38.5373
Purchase      5,000                38.1698
Sale          3,011                38.8047
Sale          613                  38.4131
Sale          2,000                38.0034
Sale          25,735               38.8162
Sale          8,465                38.8286
Sale          399                  38.8544
Sale          18,243               38.5300
Sale          2,381                38.6091
Sale          3,689                38.6083
Sale          1,980                38.5300
Sale          94                   38.0200
Sale          2,522                38.5926

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         5000          38.1698
CFD            Short         50261         38.3046
CFD            Short         9900          38.405
CFD            Short         105530        38.4426
CFD            Short         4142          38.4472
CFD            Short         28950         38.4603
CFD            Short         32            38.4771
CFD            Short         613           38.5369
CFD            Short         653           38.5373
CFD            Short         6655          38.5614
CFD            Short         80            38.6418
CFD            Long          2000          38.0033
CFD            Long          613           38.413
CFD            Long          774           38.4314
CFD            Long          2522          38.5926
CFD            Long          2381          38.6091
CFD            Long          2915          38.6551
CFD            Long          3011          38.8046
CFD            Long          25735         38.8161
CFD            Long          8465          38.8286

(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)
PUT             Purchase          200                32        EURO            19/09/2008        1.82


(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                         13 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               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                   3,800.0000       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   -35                    4,000.0000       EURO           20/03/2008
Option            Purchased   -300                   3,000.0000       EURO           20/03/2008
Option            Purchased   -360,000               45.0000          AMER           20/03/2008
Option            Purchased   -250                   3,400.0000       EURO           20/06/2008
Option            Purchased   360,000                42.0000          AMER           20/03/2008
Option            Purchased   150                    3,600.0000       EURO           20/03/2008
Option            Purchased   200                    3,200.0000       EURO           19/09/2008
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   -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