Citigroup GM UK Eqty - Rule 8.3- Premier Research

RNS Number:2230R
Citigroup Global Markets UK EqtyLtd
31 March 2008

FORM 8.3

DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE

(Rule 8.3 of the Takeover Code)

1. KEY INFORMATION

Name of person dealing (Note 1) Citigroup Global Markets UK Equity Limited
Company dealt in Premier Research Group Plc

Class of relevant security to which the Ord/Equity
dealings being disclosed relate (Note 2)

Date of dealing 25 March 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)

Class of relevant security: Long Short

Ordinary Number Number
(%) (%)

(1) Relevant securities 641,943
(1.06%) (0.00%)

(2) Derivatives (other than options) 613,163
(0.00%) (1.02%)

(3) Options and agreements to purchase/sell
(0.00%) (0.00%)

Total 613,163 613,163
(1.06%) (1.02%)

(b) Interests and short positions in relevant securities of the
company, other than the class dealt in (Note 3)

Class of relevant security: Long Short

Convertibles Number Number
(%) (%)

(1) Relevant securities (0.00%) (0.00%)

(2) Derivatives (other than options) (0.00%) (0.00%)

(3) Options and agreements to purchase/sell (0.00%) (0.00%)

Total (0.00%) (0.00%)

(c) Rights to subscribe (Note 3)

Class of relevant security: Details

3. DEALINGS (Note 4)

(a) Purchases and sales

Purchase Number of securities Price per unit (Note 5)

201,413 GBP 0.9509

Total: 201,413

Sale Number of securities Price per unit (Note 5)

Total:

(b) Derivatives transactions (other than options)

Product name, Long/short (Note 6) Number of securities (Note 7) Price per unit (Note 5)
e.g. CFD

CFD Short 201,413 GBP 0.9509

(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 7) price European etc. date paid/received per
unit (Note 5)

(ii) Exercising

Product name, e.g. call option Number of securities Exercise price per unit (Note 5)

(d) Other dealings (including new securities) (Note 4)

Nature of transaction (Note 8) Details Price per unit (if applicable) (Note 5)

4. 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

Is a Supplemental Form 8 attached? (Note 9) NO

Date of disclosure 31 March 2008

Contact name Ciaran Lavery

Telephone number 02890 409539

If a connected EFM, name of offeree/offeror with which connected N/A

If a connected EFM, state nature of connection (Note 10) N/A

Notes

The Notes on Form 8.3 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

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