Rule 8.3 - RIO TINTO 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              RIO TINTO
Class of relevant security    ORD GBP0.10
to which the dealings being
disclosed relate (Note 2)
Date of dealing               24 November 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      49,567,314     4.97%        938,810     0.09%
securities
(2) Derivatives      548,646     0.05%      1,721,758     0.17%
(other than
options)
(3) Options and      101,200     0.01%        126,828     0.01%
agreements to
purchase/sell
Total             50,217,160     5.03%      2,787,396     0.28%

(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         9,798                 24.5000
Purchase         250                   Transfer
Purchase         64,352                22.2312
Purchase         2,440                 23.0776
Purchase         2,128                 22.1247
Purchase         712                   24.5000
Purchase         12,585                24.5100
Purchase         5,873                 24.5000
Purchase         22,653                24.5000
Purchase         23,492                24.5000
Purchase         3,600                 21.3138
Purchase         1,369                 20.9900
Purchase         3,391                 23.5800
Purchase         844                   22.1300
Purchase         505                   22.1800
Purchase         290                   24.5000
Purchase         23,156                24.5000
Purchase         1,131                 24.5000
Purchase         2,275                 24.5000
Purchase         12,420                23.9082
Purchase         3,526                 23.1374
Purchase         1,782                 21.4020
Purchase         200                   22.1600
Purchase         12,585                24.5000
Purchase         74,847                24.0182
Purchase         21,426                22.4901
Purchase         12,783                23.4850
Purchase         13,419                22.0704
Purchase         102                   22.1833
Purchase         5,350                 22.1968
Purchase         13,351                21.8301
Purchase         656                   24.1723
Purchase         7,000                 23.9665
Purchase         4,118                 22.0220
Sale             1,098                 24.5000
Sale             60                    22.3300
Sale             121,713               22.4257
Sale             7,571                 24.5000
Sale             60                    22.3300
Sale             65                    22.3300
Sale             50                    22.3300
Sale             400                   24.3900
Sale             9,786                 24.5000
Sale             110                   21.8320
Sale             13,070                23.4285
Sale             840                   22.8289
Sale             43                    Transfer
Sale             13,419                22.0704
Sale             1,015                 24.2406
Sale             92                    Transfer
Sale             54,485                24.0480
Sale             65                    22.3300
Sale             1,560                 22.2920
Sale             53,443                22.2638
Sale             12,420                23.9082
Sale             6,800                 21.1853
Sale             1,700                 22.3922
Sale             6,221                 21.1853
Sale             38                    22.0920
Sale             700                   22.3500
Sale             7,386                 21.1853
Sale             207                   21.2600
Sale             3,391                 23.5975
Sale             12,585                24.5100
Sale             4,336                 23.1242
Sale             10,800                22.7529
Sale             700                   22.3800
Sale             8,510                 21.9464
Sale             45                    22.1020
Sale             111                   24.5000
Sale             461                   Transfer
Sale             882                   24.5000
Sale             20,095                21.0795
Sale             335                   24.5000
Sale             200                   22.1600

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            20095           21.0795
CFD            Long            2625            21.2554
CFD            Long            8510            21.9464
CFD            Long            13419           22.0704
CFD            Long            200             22.16
CFD            Long            53443           22.2638
CFD            Long            1560            22.2919
CFD            Long            1700            22.3922
CFD            Long            121713          22.4256
CFD            Long            10800           22.7528
CFD            Long            840             22.8289
CFD            Long            4336            23.1241
CFD            Long            13070           23.4284
CFD            Long            54485           24.048
CFD            Long            1015            24.2405
CFD            Short           3600            21.3137
CFD            Short           1782            21.4019
CFD            Short           13351           21.8301
CFD            Short           4118            22.022
CFD            Short           13419           22.0704
CFD            Short           200             22.16
CFD            Short           102             22.1833
CFD            Short           5350            22.1967
CFD            Short           64352           22.2311
CFD            Short           17613           22.9858
CFD            Short           9518            22.9897
CFD            Short           2069            23.0195
CFD            Short           2440            23.0775
CFD            Short           3526            23.1373
CFD            Short           12783           23.485
CFD            Short           7000            23.9664
CFD            Short           74847           24.0181
CFD            Short           656             24.1722

(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 November 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   100,000                56.0000          AMER           18/12/2009
Option            Purchased   -125,000               45.0000          AMER           20/03/2009
Option            Purchased   500                    5,000.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   -42                    5,200.0000       EURO           19/12/2008
Option            Purchased   -145                   5,200.0000       EURO           19/12/2008
Option            Purchased   -221                   4,400.0000       EURO           19/12/2008
Option            Purchased   -270                   6,400.0000       EURO           19/12/2008
Option            Purchased   -300                   4,400.0000       EURO           19/12/2008
Option            Purchased   -350                   5,000.0000       EURO           19/12/2008
Option            Purchased   -500                   7,000.0000       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