Credit Suisse (Eur) - EPT Disclosure

RNS Number:5541S
Credit Suisse Securities (Eur) Ltd
17 April 2008

FORM 38.5 (a)

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 Credit Suisse Securities (Europe) Limited

Company dealt in BHP Billiton

Class of relevant security to which the dealings being Ordinary Shares
disclosed relate (Note 1)

Date of dealing 16-Apr-2008

2. DEALINGS (Note 2)

(a) Purchases and sales

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

5115912 18.65 (GBP) 17.93 (GBP)

Total number of securities sold Highest price received (Note Lowest price received (Note
3) 3)
1451934 18.65 (GBP) 17.86 (GBP)

(b) Derivatives transactions (other than options)
Product name, e.g. CFD Long/short (Note 4) Number of securities (Note 5) Price per unit (Note 3)
CFD SHORT 125000 18.65(GBP)
CFD SHORT 1500000 18.65(GBP)
CFD SHORT 200000 18.65(GBP)
CFD SHORT 400000 18.65(GBP)
CFD SHORT 75308 18.65(GBP)
CFD SHORT 135000 18.65(GBP)
CFD LONG 116700 18.65(GBP)
CFD LONG 40563 18.65(GBP)
CFD LONG 86600 18.65(GBP)
CFD LONG 3850 18.65(GBP)
CFD SHORT 99695 18.65(GBP)
CFD SHORT 5050 18.65(GBP)
CFD LONG 220000 18.65(GBP)
CFD LONG 23451 18.65(GBP)
CFD LONG 296 18.65(GBP)
CFD SHORT 220000 18.65(GBP)
CFD LONG 5859 18.65(GBP)
CFD SHORT 336149 18.65(GBP)
CFD SHORT 479 18.65(GBP)
CFD SHORT 300000 18.65(GBP)
CFD SHORT 395000 18.65(GBP)

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

Date of disclosure 17-Apr-2008 09:57:10
Contact name Collins,Carolyn
Telephone number 44 20 7888 0241
Name of offeree/offeror with which connected Rio Tinto Plc
Nature of connection (Note 6) ADVISOR

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

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

EMMSFEFFWSASELL