Morgan Stanley Secs - EPT Disclosure

RNS Number:1515R
Morgan Stanley Securities Limited
31 March 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 Morgan Stanley Securities Limited

Company dealt in BHP Billiton Plc

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

Date of dealing 28 March 2008

2. DEALINGS (Note 2)

(a) Purchases and sales

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

2,094,402 15.2000 14.7100

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

1,503,376 15.2300 14.6900

(b) Derivatives transactions (other than options)

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

e.g. CFD
CFD LONG 22,076 14.7585
CFD LONG 254 14.8037
CFD LONG 2,082 14.8037
CFD LONG 500 14.8080
CFD LONG 10,000 14.8179
CFD LONG 900 14.8267
CFD LONG 124,971 14.8706
CFD LONG 5,485 14.8932
CFD LONG 8,613 14.8932
CFD LONG 31,496 14.9186
CFD LONG 62,867 14.9588
CFD SHORT 357 14.7593
CFD SHORT 44 14.7593
CFD SHORT 74,124 14.8534
CFD SHORT 32,000 14.8887
CFD SHORT 68,000 14.8887
CFD SHORT 384,000 14.9529
CFD SHORT 20,000 14.9609
CFD SHORT 128,000 15.0292
CFD SHORT 272,000 15.0292
CFD LONG 24,468 14.7600
CFD LONG 83,459 14.7600
CFD LONG 13,304 14.7600
CFD LONG 2,814 14.8077
CFD SHORT 16,062 14.7600

(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)
GBP
N/A N/A N/A N/A N/A N/A N/A

(ii) Exercising

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

N/A N/A N/A

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 31 March 2008

Contact name Zafrhan Fahmy

Telephone number 020 7677 1871

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
www.thetakeoverpanel.org.uk

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