Rule 8.3 - BHP BILLITON 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              BHP BILLITON PLC
Class of relevant security    USD0.50
to which the dealings being
disclosed relate (Note 2)
Date of dealing               20 May 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     107,863,179       4.89%     2,227,423     0.10%
securities
(2) Derivatives    3,969,466       0.18%     3,470,741     0.16%
(other than
options)
(3) Options and    1,002,450       0.05%       752,775     0.03%
agreements to
purchase/sell
Total            112,835,095       5.11%     6,450,939     0.29%


(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      169,618              20.7722
Purchase      10,790               20.2300
Purchase      170,553              20.7328
Purchase      456                  20.6200
Purchase      8,975                20.4961
Purchase      109,763              20.5726
Purchase      459,951              20.5614
Purchase      16,601               20.2330
Purchase      141,056              20.5714
Purchase      150                  20.4688
Purchase      8,701                20.7643
Purchase      734                  20.5553
Purchase      6,920                20.6457
Purchase      1,139                20.5539
Purchase      7,415                20.2338
Purchase      3,204                20.3779
Purchase      21,000               20.6300
Purchase      350                  20.5879
Purchase      2,683                20.5247
Purchase      1,197                20.2300
Purchase      22,726               20.2300
Purchase      8,230                20.2300
Purchase      240                  20.7175
Purchase      180                  20.5479
Purchase      19,429               20.9224
Purchase      1,269                20.6000
Purchase      251,723              20.5558
Purchase      600                  21.9185
Purchase      627                  21.5500
Sale          481                  20.5800
Sale          32,973               21.2131
Sale          8,000                20.6414
Sale          82,459               21.2458
Sale          6,978                20.5737
Sale          402                  21.2422
Sale          99                   20.6335
Sale          500                  21.2365
Sale          32,271               20.5072
Sale          3,464                20.2300
Sale          350                  20.5830
Sale          600                  20.8525
Sale          300                  20.5112
Sale          275                  20.6612
Sale          200                  20.5712
Sale          73,700               21.1894
Sale          4,554                20.2300
Sale          6,236                20.2300
Sale          156,034              20.8897
Sale          249                  20.2300
Sale          113,482              20.7878
Sale          2,454                20.6545
Sale          274                  21.7017
Sale          459,951              20.5614
Sale          18,661               20.9318
Sale          194                  21.6717
Sale          26,032               20.8239
Sale          33,900               21.1277
Sale          82                   20.4835
Sale          313                  21.5500

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          459951        20.5614
CFD            Long          6978          20.5736
CFD            Long          113482        20.7878
CFD            Long          26032         20.8238
CFD            Long          156034        20.8896
CFD            Long          18661         20.9318
CFD            Long          73700         21.1894
CFD            Long          32973         21.2131
CFD            Long          500           21.2365
CFD            Long          402           21.2421
CFD            Long          82459         21.2458
CFD            Short         16601         20.233
CFD            Short         7415          20.2338
CFD            Short         3204          20.3778
CFD            Short         2683          20.5246
CFD            Short         1139          20.5538
CFD            Short         251723        20.5557
CFD            Short         459951        20.5614
CFD            Short         141056        20.5713
CFD            Short         109763        20.5725
CFD            Short         6920          20.6456
CFD            Short         170553        20.7328
CFD            Short         8701          20.7643
CFD            Short         169618        20.7721
CFD            Short         19429         20.9224

(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                         21 May 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   -500,000               9.5000           EURO           19/12/2008
Option            Purchased   500,000                9.5000           EURO           19/12/2008
Option            Purchased   250,000                14.0000          AMER           20/06/2008
Option            Purchased   250,000                14.0000          AMER           20/06/2008
Option            Purchased   500                    1,900.0000       EURO           18/12/2009
Option            Purchased   500                    1,900.0000       EURO           18/12/2009
Option            Purchased   350                    1,450.0000       EURO           18/12/2009
Option            Purchased   350                    1,450.0000       EURO           18/12/2009
Option            Purchased   250                    1,700.0000       EURO           19/12/2008
Option            Purchased   250                    1,500.0000       EURO           18/12/2009
Option            Purchased   250                    1,500.0000       EURO           18/12/2009
Option            Purchased   -500                   950.0000         EURO           19/12/2008
Option            Purchased   -500                   950.0000         EURO           19/12/2008
Option            Purchased   -1,775                 1,600.0000       EURO           20/06/2008
Option            Purchased   -250,000               16.0000          AMER           19/09/2008

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