FORM 6-K
 
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
Special Report of Foreign Issuer
 
Pursuant to Rule 13a - 16 or 15d - 16 of
The Securities and Exchange Act of 1934
 
For the date of February 20, 2003
 
SIGNET GROUP plc
(Translation of registrant's name into English)

Zenith House
The Hyde
London NW9 6EW
England
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40F.
Form 20-F X      Form 40-F
Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes         No X
If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-

SCHEDULE 10

NOTIFICATION OF MAJOR INTERESTS IN SHARES
1. Name of company

SIGNET GROUP plc	
2. Name of shareholder having a major interest

CAPITAL INTERNATIONAL LIMITED, AFFILIATE OF THE CAPITAL GROUP COMPANIES INC ("CG")	
3. Please state whether notification indicates that it is in respect of holding of the shareholder named in 2 above or in respect of a non-beneficial interest or in the case of an individual holder if it is a holding of that person's spouse or children under the age of 18

NON BENEFICIAL INTEREST. PLEASE SEE LETTER BELOW FROM CG.	
4. Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them

PLEASE SEE LETTER BELOW.	
5. Number of shares / amount of stock acquired

NOT STATED.	
6. Percentage of issued class

N/A	
7. Number of shares / amount of stock disposed

N/A	
8. Percentage of issued class

N/A	
9. Class of security

0.5p ORDINARY SHARES	
10. Date of transaction

NOT STATED.	
11. Date company informed

20.02.03	
12. Total holding following this notification

SEE BELOW.	
13. Total percentage holding of issued class following this notification

SEE BELOW.	
14. Any additional information

-	
15. Name of contact and telephone number for queries

ANNE KEATES 0870 9090301	
16. Name and signature of authorised company official responsible for making this notification

 
Date of notification

20.02.03	
LETTER FROM THE CAPITAL GROUP COMPANIES, INC.
As of 17 February 2003
Signet Group plc

 	No. of Shares	Percent of Outstanding	
The Capital Group Companies, Inc. ("CG") holdings	239,787,195	13.990	
Holdings by CG Management Companies and Funds:	 	 	
Capital Guardian Trust Company	26,502,000	1.546	
Capital International Limited	207,521,659	12.108	
Capital International S.A.	4,006,510	0.234	
Capital International, Inc	1,757,026	0.103	

Schedule A
Schedule of holdings in Signet Group plc
As of 17 February 2003
Capital Guardian Trust Company

Registered Name	Local Shares	
Chase Nominees Limited	15,122,100	
ROY Nominees Limited	16,200	
RBSTB Nominees Ltd	54,300	
Nortrust Nominees	8,265,900	
Citibank London	1,550,000	
Bankers Trust	40,000	
Midland Bank plc	1,148,400	
Bank of New York Nominees	286,900	
Deutsche Bank Mannheim	18,200	
TOTAL	26,502,000	

Schedule B
Capital International Limited

Registered Name	Local Shares	
Chase Nominees Limited	50,120,620	
KAS UK	385,920	
HSBC Bank plc	13,086,900	
Deutsche Bank AG	11,064,322	
State Street Bank & Trust Co.	2,865,900	
Nortrust Nominees	28,106,370	
Morgan Guaranty	4,511,200	
Barclays Bank	1,274,000	
Midland Bank plc	2,079,400	
Northern Trust	2,608,460	
Bank of New York Nominees	57,773,980	
State Street Nominees Limited	2,556,200	
Bank One London	1,685,000	
Bankers Trust	29,403,387	
TOTAL		

Schedule B
Capital International S.A.

Chase Nominees Limited	3,517,410	
Midland Bank plc	99,100	
Royal Bank of Scotland	273,000	
Lloyds Bank	117,000	
TOTAL		

Schedule B
Capital International Inc.

Nortrust Nominees	1,659,026	
HSBC Bank plc	98,000	
TOTAL	1,757,026	

The FSA does not give any express or implied warranty as to the accuracy of this document or material and does not accept any liability for error or omission. The FSA is not liable for any damages (including, without limitation, damages for loss of business or loss of profits) arising in contract, tort or otherwise from the use of or inability to use this document, or any material contained in it, or from any action or decision taken as a result of using this document or any such material.
END
SIGNATURES
     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
                                                                   SIGNET GROUP plc

                                                               By: /s/ Walker Boyd

                                                               Name: Walker Boyd
                                                                            Title: Group Finance Director
Date:    February 20, 2003