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               14 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      28,371,405     2.90%       999,960       0.10%
securities
(2) Derivatives      136,749     0.01%       362,165       0.04%
(other than
options)
(3) Options and    1,222,475     0.13%     1,063,250       0.11%
agreements to
purchase/sell
Total             29,730,629     3.04%     2,425,375       0.25%


(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      4,100                39.6214
Purchase      2,500                39.6570
Purchase      784                  39.6071
Purchase      261                  39.3800
Purchase      2,086                39.6433
Purchase      3,404                39.6938
Purchase      257                  39.3800
Purchase      80,000               39.3800
Purchase      8                    39.2100
Purchase      6,740                39.2100
Purchase      7,700                38.3653
Purchase      27,633               39.9948
Purchase      296                  39.4908
Purchase      155                  39.4908
Purchase      15,080               39.3800
Purchase      6,732                39.3800
Purchase      4,325                39.3800
Sale          93                   39.5400
Sale          4,900                39.5147
Sale          8,493                39.3800
Sale          4,325                39.3800
Sale          6,732                39.3800
Sale          1,777                39.3800
Sale          16,487               39.6495
Sale          1,784                39.4402
Sale          49,606               39.5318
Sale          42,650               39.6706
Sale          8                    39.2100
Sale          6,740                39.2100
Sale          180                  39.3800
Sale          1,400                39.5972
Sale          10,988               39.3800
Sale          1,779                39.6588

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         7700          38.3653
CFD            Short         784           39.6071
CFD            Short         4100          39.6214
CFD            Short         2500          39.6569
CFD            Short         3404          39.6938
CFD            Short         27633         39.9947
CFD            Long          1784          39.4401
CFD            Long          4900          39.5147
CFD            Long          49606         39.5318
CFD            Long          1400          39.5971
CFD            Long          16487         39.6495

(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                         17 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               45.0000          AMER           20/03/2008
Option            Purchased   -150,000               38.0000          AMER           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                   3,200.0000       EURO           20/03/2008
Option            Purchased   -500                   3,600.0000       EURO           20/06/2008
Option            Purchased   -500                   3,400.0000       EURO           20/03/2008
Option            Purchased   -500                   3,800.0000       EURO           20/03/2008
Option            Purchased   -350                   4,000.0000       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   -250                   3,400.0000       EURO           20/06/2008
Option            Purchased   360,000                40.0000          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   150,000                32.0000          AMER           20/06/2008
Option            Purchased   250,000                42.0000          AMER           20/03/2008
Option            Purchased   360,000                42.0000          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