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 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      27,739,531      2.84%    1,178,106       0.12%
securities
(2) Derivatives       78,636      0.01%      529,583       0.05%
(other than
options)
(3) Options and      712,175      0.07%      552,050       0.06%
agreements to
purchase/sell
Total             28,530,342      2.92%    2,259,739       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      4,030                37.0600
Purchase      800                  37.6954
Purchase      105                  38.0860
Purchase      4,084                38.1900
Purchase      716                  37.4943
Purchase      440                  37.5110
Purchase      105                  37.9231
Purchase      1,066                37.5110
Purchase      235,884              37.6113
Purchase      1,337                37.5110
Purchase      2,900                37.5110
Purchase      20,000               37.7675
Purchase      2,804                38.1900
Purchase      611                  37.5110
Purchase      693                  37.2973
Purchase      335                  37.2973
Purchase      19,627               37.6165
Purchase      85                   37.7831
Purchase      6,451                37.5110
Purchase      130                  37.8277
Purchase      1,709                37.2973
Purchase      708                  37.5110
Purchase      651                  37.5110
Purchase      13,569               37.0600
Purchase      15,358               37.5157
Purchase      105                  37.9368
Purchase      135                  37.7468
Purchase      8,948                38.0533
Purchase      2,673                38.0533
Purchase      48,275               37.5051
Purchase      5,919                37.0600
Purchase      8,337                37.2973
Purchase      60                   38.1973
Purchase      565                  38.1900
Purchase      337                  37.5110
Purchase      90                   37.7464
Purchase      105                  37.8364
Purchase      135                  37.7968
Purchase      869                  37.5110
Purchase      80                   37.9668
Purchase      16,119               37.5110
Purchase      3,962                38.0533
Purchase      3,236                37.5110
Purchase      78                   38.0000
Purchase      120                  37.7584
Purchase      625                  37.5110
Purchase      331                  37.2973
Purchase      297                  37.2973
Purchase      215                  37.6808
Sale          6,498                38.1900
Sale          4,312                37.5884
Sale          2,030                37.7000
Sale          7,000                38.1900
Sale          40,858               37.5166
Sale          1,840                37.3586
Sale          15,437               37.5470

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         2601          37.4573
CFD            Short         48275         37.5051
CFD            Short         12757         37.5276
CFD            Short         235884        37.6113
CFD            Short         19627         37.6165
CFD            Short         60            38.1973
CFD            Long          955           37.0645
CFD            Long          40858         37.5166
CFD            Long          380           37.5729
CFD            Long          2030          37.7
CFD            Long          3357          37.7373
CFD            Long          1020          37.7462
CFD            Long          63181         37.7701

(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                         13 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