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               18 April 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       99,931,069     4.53%      3,557,313     0.16%
securities
(2) Derivatives     3,844,227     0.17%      3,373,503     0.15%
options)
(3) Options and     1,002,450     0.05%        752,775     0.03%
agreements to
purchase/sell
Total             104,777,746     4.75%      7,683,591     0.35%

(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         10,900                  17.7522
Purchase         211                     Transfer
Purchase         29,800                  17.7814
Purchase         55                      Transfer
Purchase         689                     Transfer
Purchase         13,490                  18.1482
Purchase         14,018                  18.0800
Purchase         114                     Transfer
Purchase         91                      Transfer
Purchase         490,462                 17.9297
Purchase         63,911                  18.0451
Purchase         57                      Transfer
Purchase         135                     Transfer
Purchase         4,621                   17.9134
Purchase         508                     17.9684
Purchase         229                     Transfer
Purchase         8,400                   18.0874
Purchase         61,726                  17.8440
Purchase         153,877                 17.9723
Purchase         50,837                  17.9736
Purchase         147                     Transfer
Purchase         74,352                  18.1233
Purchase         95,600                  17.7593
Purchase         104                     Transfer
Purchase         18,775                  17.7731
Purchase         10,587                  17.9100
Purchase         192                     Transfer
Purchase         3,374                   17.8112
Purchase         10,329                  17.7337
Purchase         126                     Transfer
Purchase         7,384                   17.9100
Purchase         8,266                   17.9100
Purchase         399                     Transfer
Purchase         77,691                  18.0647
Sale             96,206                  17.9100
Sale             4,522                   17.9878
Sale             67,930                  17.7315
Sale             1,603                   17.9273
Sale             63,911                  18.0452
Sale             91                      Transfer
Sale             14,000                  17.9100
Sale             8,200                   17.9900
Sale             689                     Transfer
Sale             211                     Transfer
Sale             4,000                   17.9866
Sale             4,984                   17.9410
Sale             8,270                   17.8725
Sale             69,411                  17.7856
Sale             7,384                   17.9100
Sale             200                     18.0012
Sale             55                      Transfer
Sale             147                     Transfer
Sale             104                     Transfer
Sale             330                     18.6600
Sale             63,911                  18.0451
Sale             399                     Transfer
Sale             800                     17.9525
Sale             126                     Transfer
Sale             14,018                  18.0800
Sale             22,644                  17.9100
Sale             229                     Transfer
Sale             166                     18.1535
Sale             146                     18.0217
Sale             910                     17.9866
Sale             114                     Transfer
Sale             280                     18.1035
Sale             7,380                   17.6643
Sale             6,600                   17.9371
Sale             330                     18.6600
Sale             38,410                  17.9100
Sale             192                     Transfer
Sale             5,977                   17.9073
Sale             91,076                  17.9063

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          7380          17.6643
CFD            Long          67930         17.7315
CFD            Long          69411         17.7856
CFD            Long          8270          17.8725
CFD            Long          91076         17.9062
CFD            Long          5977          17.9073
CFD            Long          1603          17.9273
CFD            Long          6100          17.937
CFD            Long          500           17.9371
CFD            Long          4984          17.941
CFD            Long          800           17.9525
CFD            Long          4910          17.9865
CFD            Long          4522          17.9877
CFD            Long          8200          17.99
CFD            Short         10900         17.7522
CFD            Short         95600         17.7593
CFD            Short         18775         17.7731
CFD            Short         29800         17.7813
CFD            Short         3374          17.8111
CFD            Short         61726         17.8439
CFD            Short         4621          17.9134
CFD            Short         490462        17.9296
CFD            Short         508           17.9684
CFD            Short         153877        17.9723
CFD            Short         50837         17.9736
CFD            Short         77691         18.0646
CFD            Short         8400          18.0873
CFD            Short         74352         18.1232
CFD            Short         13490         18.1482

(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
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.


None

Is a Supplemental Form 8 attached? (Note 9)                 YES


Date of disclosure                         21 April 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   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
Option            Purchased   -500,000                9.5000          EURO           19/12/2008

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