Citigroup GM UK Eqty - EPT Disclosure

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Thu Apr 10, 2008 7:19am EDT

RNS Number:0781S
Citigroup Global Markets UK EqtyLtd
10 April 2008




                 DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS

                      WITH RECOGNISED INTERMEDIARY STATUS

                      DEALING IN A CLIENT-SERVING CAPACITY

                      (Rule 38.5(a) of the Takeover Code)







1.         KEY INFORMATION


Name of exempt principal trader                Citigroup Global Markets UK Equity Limited

Company dealt in                               Rio Tinto Plc

Class of relevant security to which the        Ord/Equity
dealings being disclosed relate (Note 1)

Date of dealing                                09 April 2008






2.         DEALINGS (Note 2)



(a)        Purchases and sales


Total number of securities purchased   Highest price paid (Note 3)           Lowest price paid (Note 3)


508,006                                GBP 60.7000                           GBP 57.6000


1                                      USD 117.4000                          USD 117.4000








Total number of securities sold        Highest price received (Note 3)       Lowest price received (Note 3)


391,800                                GBP 60.5000                           GBP 57.9400





 (b)       Derivatives transactions (other than options)


Product name,         Long/short (Note 4)       Number of securities (Note 5)        Price per unit (Note 3)

e.g. CFD
CFD                   LONG                      20,626                               GBP 59.2391
CFD                   SHORT                     18,000                               GBP 57.8933





(c)        Options transactions in respect of existing securities

(i)         Writing, selling, purchasing or varying


Product name,        Writing, selling, Number of securities Exercise   Type, e.g.     Expiry     Option money
                       purchasing,     to which the option             American,
e.g. call option     varying etc.      relates (Note 5)     price      European etc.  date       paid/received per
                                                                                                 unit (Note 3)










 (ii)       Exercising


Product name, e.g. call option         Number of securities                  Exercise price per unit (Note 3)








3.         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








Date of disclosure                                                10 April 2008

Contact name                                                      Selina Campbell

Telephone number                                                  02890 409538

Name of offeree/offeror with which connected                      BHP Billiton Plc


Nature of connection (Note 6)                                     Financial Advisor






Notes



The Notes on Form 38.5(a) can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk





                      This information is provided by RNS
            The company news service from the London Stock Exchange
END

EMMILFLFSTIILIT
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