Rule 8.3

18th Aug 2006 11:57

FORM 8.3 DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE (Rule 8.3 of the Takeover Code) 1. KEY INFORMATIONName of person dealing (Note 1) Prudential Plc / M&G Investment Management Limited Company dealt in Signet Group Plc Class of relevant security to Ord GBP0.005 which the dealings being disclosed relate (Note 2) Date of dealing 17 August 2006 2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE(a) Interests and short positions (following dealing) in the class of relevantsecurity dealt in (Note 3) Long Short Number (%) Number (%) (1) Relevant securities 52,820,612 3.04 (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total 52,820,612 3.04 (b) Interests and short positions in relevant securities of the company, otherthan the class dealt in (Note 3)Class of relevant security: Long Short 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 salesPurchase/sale Number of securities Price per unit (Note 5) Sale 3,185 1.15750 GBP (b) Derivatives transactions (other than options)Product name, Long/short (Note Number of securities Price per unit (Note 6) (Note 7) 5) e.g. CFD (c) Options transactions in respect of existing securities(i) Writing, selling, purchasing or varyingProduct name, Writing, Number of Exercise Type, e.g. Expiry Option selling, securities to American, money e.g. call purchasing, which the price European date option varying option etc. paid/ etc. relates (Note received 7) per unit (Note 5) (ii) ExercisingProduct name, e.g. call Number of securities Exercise price per unit option (Note 5) (d) Other dealings (including new securities) (Note 4)Nature of transaction Details Price per unit (if (Note 8) applicable) (Note 5) 4. OTHER INFORMATIONAgreements, arrangements or understandings relating to options or derivativesFull 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) NODate of disclosure 18 August 2006 Contact name Emma Thompson Telephone number 020 7548 2293 If a connected EFM, name of offeree/offeror with which connected If a connected EFM, state nature of connection (Note 10) NotesThe Notes on Form 8.3 can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.ukENDM&G Investment Management Limited

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