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 September 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     123,314,751     5.59%      2,566,582     0.12%
securities
(2) Derivatives    3,212,039     0.15%     14,957,173     0.68%
(other than
options)
(3) Options and       2,700      0.00%        251,000     0.01%
agreements to
purchase/sell
Total           126,529,490      5.73%     17,774,755     0.81%

(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           Price per unit
                     Securities          (GBP)
Purchase             2,728               12.9793
Purchase             266                 Transfer
Purchase             350,000             13.5395
Purchase             16,195              13.3092
Purchase             13,767              13.1810
Purchase             6,652               13.4000
Purchase             187,696             13.2538
Purchase             180,000             12.9824
Purchase             373,623             13.2481
Purchase             300                 13.3195
Purchase             1,493,156           13.2885
Purchase             33,900              13.2244
Purchase             144,354             13.2578
Purchase             13,939              13.0272
Purchase             5,100               13.2059
Purchase             2,300               13.2242
Purchase             21,622              13.0724
Purchase             279                 Transfer
Purchase             128,659             13.2044
Purchase             1,755               13.3798
Purchase             3,279               13.2449
Purchase             129,400             12.9000
Purchase             215                 12.9990
Purchase             225                 13.3500
Purchase             2,030               13.1700
Purchase             4,440               13.4099
Purchase             1,780               13.4300
Purchase             30,114              13.6993
Purchase             19,496              13.1811
Purchase             146,305             13.0939
Purchase             6,868               13.1700
Purchase             42                  13.4100
Sale                 1,909               12.9157
Sale                 43                  14.2520
Sale                 109,500             13.3822
Sale                 154                 Transfer
Sale                 93,233              13.2624
Sale                 6,652               13.1700
Sale                 10,000              13.2380
Sale                 16,002              13.4926
Sale                 2,728               13.2122
Sale                 2,300               13.2229
Sale                 117                 Transfer
Sale                 7,750               13.2029
Sale                 94                  13.0783
Sale                 93                  14.2510
Sale                 315,871             13.2430
Sale                 201                 13.8010
Sale                 563                 Transfer
Sale                 350,000             13.5395
Sale                 128,813             13.2093
Sale                 400                 13.2700
Sale                 200                 13.2700
Sale                 1,255,663           13.2409
Sale                 1,755               13.4380
Sale                 328,649             13.2509
Sale                 436                 Transfer
Sale                 37,745              13.1700
Sale                 11,896              13.4697
Sale                 13,847              13.3787
Sale                 13,767              13.1810
Sale                 47,838              13.1081
Sale                 266                 Transfer
Sale                 1,300               13.1700
Sale                 4,174               13.1700
Sale                 46,900              13.2629
Sale                 347                 13.2720
Sale                 700                 13.2700
Sale                 873                 13.1700
Sale                 490                 13.2500
Sale                 279                 Transfer
Sale                 25,000              13.1700
Sale                 157                 14.0110
Sale                 180,000             12.9824


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          1909          12.9156
CFD            Long          94            13.0782
CFD            Long          47838         13.1081
CFD            Long          5608          13.17
CFD            Long          128813        13.2092
CFD            Long          2728          13.2121
CFD            Long          40892         13.2123
CFD            Long          2300          13.2228
CFD            Long          10000         13.238
CFD            Long          1255663       13.2409
CFD            Long          315871        13.243
CFD            Long          116250        13.2437
CFD            Long          178959        13.251
CFD            Long          46900         13.2629
CFD            Long          1857          13.269
CFD            Long          33440         13.2743
CFD            Long          13847         13.3786
CFD            Long          1755          13.4379
CFD            Long          11896         13.4697
CFD            Long          16002         13.4925
CFD            Short         2728          12.9793
CFD            Short         13939         13.0272
CFD            Short         21622         13.0724
CFD            Short         146305        13.0939
CFD            Short         19496         13.1811
CFD            Short         128659        13.2043
CFD            Short         5100          13.2059
CFD            Short         2300          13.2242
CFD            Short         106080        13.2384
CFD            Short         143572        13.2433
CFD            Short         187696        13.2537
CFD            Short         144354        13.2577
CFD            Short         123971        13.2619
CFD            Short         1493156       13.2884
CFD            Short         16195         13.3091
CFD            Short         1755          13.3797

(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                         19 September 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   -250,000               16.0000          AMER           19/09/2008
Option            Purchased   750                    2,200.0000       EURO           19/12/2008
Option            Purchased   350                    1,450.0000       EURO           18/12/2009
Option            Purchased   350                    1,450.0000       EURO           18/12/2009
Option            Purchased   250                    1,900.0000       EURO           18/12/2009
Option            Purchased   250                    1,900.0000       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

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