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               18 January 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       26,810,733    2.74%      1,403,544      0.14%
securities
(2) Derivatives       295,681     0.03%       202,274      0.02%
(other than
options)
(3) Options and         2,025     0.00%        1,800       0.00%
agreements to
purchase/sell
Total              27,108,439     2.77%     1,607,618      0.16%

(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      10,612               32.8401
Purchase      2,200                31.3479
Purchase      1,225                33.6300
Purchase      10,612               33.0202
Purchase      37,421               33.1292
Purchase      86,620               33.1392
Purchase      113,984              33.8906
Purchase      65,815               33.2670
Purchase      84,097               32.4080
Purchase      11,660               32.0500
Purchase      8,231                33.0284
Purchase      370                  33.1392
Purchase      34,448               33.6300
Purchase      559                  32.4147
Purchase      1,677                33.6300
Purchase      10,720               32.2826
Purchase      160                  31.2784
Purchase      2,200                31.3479
Purchase      20,431               33.6300
Purchase      125                  31.0868
Purchase      4,900                33.6300
Purchase      216                  33.6300
Purchase      327                  33.6300
Purchase      24,785               31.1957
Sale          86,620               33.1362
Sale          34,448               33.6300
Sale          370                  33.1332
Sale          37,421               33.1262
Sale          8,231                33.0284
Sale          113,984              33.8906
Sale          65,815               33.2670
Sale          24,785               31.1957
Sale          34,448               33.6300
Sale          10,612               33.0139
Sale          12,867               33.6300
Sale          163,633              33.1835
Sale          8,231                33.0284
Sale          2,200                31.3479
Sale          216                  33.6236
Sale          1,174                33.6300
Sale          10,612               32.8339
Sale          559                  32.4089
Sale          10,720               32.2826

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         24785         31.1956
CFD            Short         2200          31.3479
CFD            Short         10720         32.2826
CFD            Short         559           32.4147
CFD            Short         1120          32.6565
CFD            Short         10612         32.8401
CFD            Short         14024         33.0771
CFD            Short         22277         33.1856
CFD            Long          11953         32.6115
CFD            Long          10612         33.0139
CFD            Long          8231          33.0283
CFD            Long          16389         33.0332
CFD            Long          370           33.1332
CFD            Long          65815         33.2669
CFD            Long          58278         33.2728
CFD            Long          216           33.6236

(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              Selling            300               30         EURO          20/03/08   2.25

(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                         21 January 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   500                    3,400.0000       EURO           20/03/2008
Option            Purchased   400                    3,800.0000       EURO           20/06/2008
Option            Purchased   375                    4,800.0000       EURO           20/03/2008
Option            Purchased   350                    4,000.0000       EURO           20/03/2008
Option            Purchased   250                    3,200.0000       EURO           20/03/2008
Option            Purchased   150                    4,000.0000       EURO           20/06/2008
Option            Purchased   -300                   3,000.0000       EURO           20/03/2008
Option            Purchased   -500                   3,200.0000       EURO           20/03/2008
Option            Purchased   -500                   3,600.0000       EURO           20/06/2008
Option            Purchased   -500                   3,400.0000       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