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 2, 2004
 
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

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

N/A	
6. Percentage of issued class

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

NOT STATED	
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

2 FEBRUARY 2004	
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

2 FEBRUARY 2004	
LETTER FROM THE CAPITAL GROUP COMPANIES, INC.
As of 28 January 2004
Signet Group plc

 	No. of Shares	Percent of Outstanding	
The Capital Group Companies, Inc. ("CG") holdings	211,324,782	12.242	
Holdings by CG Management Companies and Funds:	 	 	
Capital Guardian Trust Company	23,139,700	1.341	
Capital International Limited	183,175,446	10.612
	
Capital International S.A.	3,890,210	0.225	
Capital International, Inc	1,119,426	0.065	
Schedule A
Schedule of holdings in Signet Group plc
As of 28 January 2004
Capital Guardian Trust Company

Registered Name	Local Shares
	
Chase Nominees Limited	13,935,300	
Midlands Bank plc	1,004,800	
Deutsche Bank Mannheim	18,200	
Bankers Trust	40,000	
Citibank London	942,900	
Nortrust Nominees	7,156,100	
RBSTB Nominees Ltd	26,200	
ROY Nominees Ltd	16,200	
TOTAL	23,139,700	
Schedule B
Capital International Limited

Registered Name	Local Shares	
State Street Nominees Limited	3,374,700	
Bank of New York Nominees	62,578,971	
Northern Trust	4,736,560	
Chase Nominees Limited	29,045,280	
Midland Bank plc	2,079,400	
Bankers Trust	4,485,087	
Barclays Bank	1,077,400	
Morgan Guaranty	4,681,200	
Nortrust Nominees	32,594,148	
State Street Bank & Trust Co	11,812,358	
Deutsche Bank AG	11,164,122	
HSBC Bank plc	13,234,900	
Mellon Bank N.A.	196,600	
KAS UK	385,920	
Bank One London	1,728,800	
TOTAL	183,175,446	

Schedule B
Capital International S.A.

Chase Nominees	3,443,510	
Midland Bank plc	56,700	
Royal Bank of Scotland	273,000	
Lloyds Bank	117,000	
TOTAL	3,890,210	

Schedule B
Capital International Inc.

Nortrust Nominees	1,021,426	
HSBC Bank plc	98,000	
TOTAL	1,119,426	

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 2, 2004