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               15 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      28,037,139     2.87%      1,178,632      0.12%
securities
(2) Derivatives       69,992     0.01%        433,038      0.04%
(other than
options)
(3) Options and      712,175     0.07%        552,050      0.06%
agreements to
purchase/sell
Total             28,819,306     2.95%      2,163,720      0.22%


(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      33,120               38.2577
Purchase      4,013                38.8143
Purchase      315                  38.3300
Purchase      74,717               38.2577
Purchase      2,887                84.2207 CHF
Purchase      12,794               38.2575
Purchase      3,204                38.2576
Purchase      187,734              38.2577
Purchase      5,956                38.2573
Purchase      5,537                38.3300
Purchase      3,957                38.3300
Purchase      38,097               38.2577
Purchase      7,201                38.2573
Purchase      261                  38.8143
Purchase      15,520               38.2578
Purchase      10,266               38.2574
Purchase      42,958               38.2142
Purchase      2,804                38.3300
Purchase      2,375                38.2462
Purchase      7,785                38.2573
Purchase      5,884                84.2207 CHF
Purchase      520                  38.8100
Purchase      1,699                38.7325
Purchase      10,110               38.2574
Purchase      4,071                38.2575
Purchase      4,277                38.1800
Purchase      1,000                38.5793
Purchase      8,222                38.2574
Purchase      3,077                38.3300
Purchase      3,404                38.2932
Sale          200                  38.5436
Sale          4,967                38.3345
Sale          9,103                38.4732
Sale          844                  38.4230
Sale          2,647                38.3345
Sale          25,264               38.3345
Sale          642                  38.3300
Sale          67,676               38.3300
Sale          170                  38.3227
Sale          14,322               38.4837
Sale          29,877               38.3345
Sale          75,268               38.2647
Sale          48,749               38.3345
Sale          4,277                38.1800
Sale          3,219                38.3345
Sale          5,537                38.3300
Sale          23,924               38.3300
Sale          45,936               38.2568
Sale          4,277                38.3300
Sale          3,957                38.3300

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         898           38.144
CFD            Short         42958         38.2141
CFD            Short         2506          38.3467
CFD            Short         1000          38.5793
CFD            Long          45936         38.2567
CFD            Long          75268         38.2646
CFD            Long          2104          38.3011
CFD            Long          170           38.3227
CFD            Long          9103          38.4732
CFD            Long          9893          38.499
CFD            Long          12218         38.515
CFD            Long          200           38.5436

(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                         18 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