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               20 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      28,871,883     2.95%       739,405       0.08%
securities
(2) Derivatives      336,887     0.03%       136,028       0.01%
(other than
options)
(3) Options and     250,600      0.03%       151,100       0.02%
agreements to
purchase/sell
Total             29,459,370     3.01%      1,026,533      0.10%


(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      575                   36.0400
Purchase      500,000               38.0000
Purchase      20,000                35.3387
Purchase      567                   37.8611
Purchase      718                   34.8366
Purchase      2,900                 35.9467
Purchase      23,233                34.8300
Purchase      500,000               34.0000
Purchase      1,032                 35.9400
Purchase      350,000               40.0000
Purchase      607                   34.8300
Purchase      2,989                 35.4620
Purchase      643                   35.5364
Purchase      9,779                 34.9974
Purchase      94,757                36.3100
Purchase      13,642                38.2800
Purchase      62                    34.8300
Purchase      1,200                 35.8036
Purchase      1,228                 35.5168
Purchase      16,317                35.1775
Purchase      97,509                37.1600
Purchase      250,000               32.0000
Purchase      500,000               38.0000
Purchase      500,000               34.0000
Purchase      49,765                35.6053
Purchase      350,000               40.0000
Purchase      250,000               32.0000
Purchase      25,000                36.0817
Purchase      900                   35.8727
Purchase      2,562                 34.8300
Purchase      1,890                 35.3038
Purchase      150,000               36.0000
Sale          2,360                 34.8300
Sale          2,500                 35.5556
Sale          292,364               36.5200
Sale          25,000                36.3031
Sale          150,000               36.0000
Sale          3,311                 36.0845
Sale          128                   36.0408
Sale          947                   35.6329
Sale          400                   36.0768
Sale          500                   35.0000
Sale          575                   36.0400
Sale          270                   35.4200
Sale          500,000               38.0000
Sale          500,000               34.0000
Sale          250,000               32.0000
Sale          150,000               36.0000
Sale          350,000               40.0000
Sale          1,180                 34.8300
Sale          120,509               35.2880
Sale          97,509                37.1600
Sale          27,698                34.8300
Sale          23,233                34.8300
Sale          567                   37.8611
Sale          7,239                 35.4000
Sale          26,159                36.5200
Sale          6,205                 35.8243
Sale          4,545                 35.5656
Sale          597                   35.9100
Sale          14,000                36.8172
Sale          87,246                35.7089
Sale          942                   35.2700
Sale          3,312                 36.0464
Sale          575                   36.0500
Sale          76,938                36.5200

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         718           34.8366
CFD            Short         16317         35.1775
CFD            Short         1890          35.3037
CFD            Short         20000         35.3386
CFD            Short         2989          35.462
CFD            Short         1228          35.5168
CFD            Short         643           35.5363
CFD            Short         49765         35.6053
CFD            Short         1200          35.8035
CFD            Short         900           35.8727
CFD            Short         2900          35.9467
CFD            Short         25000         36.0816
CFD            Long          2500          35.5556
CFD            Long          4545          35.5655
CFD            Long          947           35.6328
CFD            Long          87246         35.7088
CFD            Long          6205          35.8242
CFD            Long          400           36.0767
CFD            Long          25000         36.3031


(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                         25 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   150,000                32.0000          AMER           20/06/2008
Option            Purchased   100,000                47.0000          AMER           19/09/2008
Option            Purchased   400                    3,800.0000       EURO           20/06/2008
Option            Purchased   200                    3,200.0000       EURO           19/09/2008
Option            Purchased   -100                   4,000.0000       EURO           20/06/2008
Option            Purchased   -250                   3,400.0000       EURO           20/06/2008
Option            Purchased   -250                   3,400.0000       EURO           20/06/2008
Option            Purchased   -500                   3,600.0000       EURO           20/06/2008
Option            urchased    -150,000               38.0000          AMER           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