Holding(s) in Company

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Signet Group plc

2. Reason for the notification (please tick the appropriate box or boxes): 

An acquisition or disposal of voting rights 

x

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An event changing the breakdown of voting rights

3. Full name of person(s) subject to the notification obligation:

Capital Group International, Inc

4. Full name of shareholder(s) (if different from 3.)

5. Date of the transaction and date on which the threshold is crossed or reached:

21 May 2008

6. Date on which issuer notified:

22 May 2008

7. Threshold(s) that is/are crossed or reached:

9%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares 

 if possible using the ISIN CODE

Situation previous to the Triggering transaction 

Resulting situation after the triggering transaction

Number of Shares 

Number of Voting Rights viii

Number of shares 

Number of voting rights ix

% of voting rights

Direct

Indirect

Direct x

Indirect xi

Direct

Indirect

GB001HTFP68

172,078,562

172,078,562

161,767,185

161,767,185

9.4848%

B: Financial Instruments

Resulting situation after the triggering transaction xii

Type of financial instrument 

Expiration date xiii

Exercise/ Conversion Period/ Date xiv 

Number of voting rights that may be acquired if the instrument is exercised/ converted. 

% of voting rights

N/A

Total (A+B)

Number of voting rights

% of voting rights

161,767,185

9.4848%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable xv:

Number of shares Percent of outstanding

Capital Group International Inc. ("CGII") holdings 161,767,185 9.485%

Holidngs by CGII Management Companies and Funds:

Capital Guardian Trust Company 1,694,960 0.099%

Capital International Limited 94,664,389 5.550%

Capital International S.A. 33,491,510 1.964%

Capital International, Inc. 31,916,326 1.871%

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

14. Contact name:

15. Contact telephone number: