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               21 February 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      28,277,286     2.89%     1,184,076       0.12%
securities
(2) Derivatives       71,639     0.01%       498,907       0.05%
(other than
options)
(3) Options and      712,175     0.07%       552,050       0.06%
agreements to
purchase/sell
Total             29,061,100     2.97%     2,235,033       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      3,651                40.6000
Purchase      9,373                41.2550
Purchase      409                  41.2550
Purchase      31,450               41.3390
Purchase      1,868                41.2550
Purchase      15,355               40.2420
Purchase      7,744                40.6000
Purchase      3,415                40.6000
Purchase      36,429               40.6000
Purchase      200                  39.9166
Purchase      382                  41.2550
Purchase      1,722                41.2550
Purchase      192                  40.6073
Purchase      3,780                39.9372
Purchase      3,789                41.2550
Purchase      631                  41.2550
Purchase      360                  41.2550
Purchase      6,222                40.6000
Purchase      270                  41.2550
Purchase      319                  40.7093
Purchase      6,790                40.6000
Purchase      4,150                40.6000
Purchase      30,928               41.6962
Purchase      12,582               40.7112
Purchase      4,329                40.1116
Purchase      975                  41.2550
Purchase      186                  40.6077
Purchase      515                  41.2550
Purchase      2,499                40.6000
Sale          345                  41.3000
Sale          12,582               40.7112
Sale          192                  40.6627
Sale          100                  40.0161
Sale          8,900                41.2724
Sale          3,457                40.0054
Sale          492                  40.6000
Sale          6,498                40.6000
Sale          82,321               40.8640
Sale          469                  40.9041
Sale          1,122                41.4731
Sale          777                  41.3000
Sale          30,928               41.6962
Sale          2,612                40.6000
Sale          100                  41.7023
Sale          37,000               40.6000
Sale          232                  41.3000
Sale          38,226               41.3656


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         200           39.9166
CFD            Short         3780          39.9371
CFD            Short         4329          40.1116
CFD            Short         15355         40.2419
CFD            Short         192           40.6072
CFD            Short         186           40.6076
CFD            Short         31450         41.3389
CFD            Long          190           39.8757
CFD            Long          3457          40.0053
CFD            Long          192           40.6626
CFD            Long          6868          40.7131
CFD            Long          82321         40.8639
CFD            Long          241           41.2191
CFD            Long          8900          41.2724
CFD            Long          1122          41.4731
CFD            Long          31358         41.5084

(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                         22 February 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                    4,000.0000       EURO           20/06/2008
Option            Purchased   -140,000               34.0000          AMER           20/03/2008
Option            Purchased   -50,000                37.0000          AMER           20/03/2008
Option            Purchased   -500                   3,400.0000       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   -300                   3,000.0000       EURO           20/03/2008
Option            Purchased   -360,000               36.0000          AMER           20/03/2008
Option            Purchased   150                    3,600.0000       EURO           20/03/2008
Option            Purchased   360,000                42.0000          AMER           20/03/2008
Option            Purchased   250                    3,200.0000       EURO           20/03/2008
Option            Purchased   350                    4,000.0000       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   100,000                47.0000          AMER           19/09/2008
Option            Purchased   250,000                42.0000          AMER           20/03/2008
Option            Purchased   -250                   3,800.0000       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