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 May 25, 2006
SIGNET GROUP plc
(Translation of registrant's name into English)
15 Golden Square
London W1F 9JG
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-
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 24 May 2006. 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 Mark Jenkins 16. Name and signature of authorised company official responsible for making this notification Date of notification 25 May 2006 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. LETTER FROM THE CAPITAL GROUP COMPANIES, INC. As of 23 May 2006 Signet Group plc Schedule A Number of shares Percent of Outstanding The Capital Group Companies, Inc. ("CG") 190,383,823 10.940% holdings Holdings by CG Management Companies and Funds: Capital Guardian Trust Company 13,036,900 0.749% Capital International Limited 142,999,387 8.217% Capital International S.A. 15,637,910 0.899% Capital International, Inc. 18,709,626 1.075% Schedule B Schedule of holdings in Signet Group plc As of 23 May 2006 Capital Guardian Trust Company Registered Name Local Shares State Street Nominees Limited 332,900 Bank of New York Nominees 595,100 Chase Nominees Limited 5,983,200 BT Globenet Nominees Ltd. 36,000 Midland Bank plc 127,300 Cede & Co. 57,400 Nortrust Nominees 5,728,200 State Street Bank & Trust Co. 57,600 HSBC Bank plc 800 Mellon Nominees (UK) Limited 92,200 Bank One Limited 26,200 TOTAL 13,036,900 Capital International Limited Registered Name Local Shares State Street Nominees Limited 1,567,800 Bank of New York Nominees 36,108,186 Northern Trust 14,994,882 Chase Nominees Limited 27,268,067 Midland Bank plc 2,401,400 Bankers Trust 770,000 Barclays Bank 1,108,400 Citibank London 367,700 Morgan Guaranty 2,958,400 Nortrust Nominees 20,130,924 MSS Nominees Limited 290,000 State Street Bank & Trust Co. 13,651,808 Lloyds Bank 274,500 Citibank 455,500 Citibank NA (Toronto) 163,200 Deutsche Bank AG 432,100 Chase Manhattan Nominee Ltd. (Australia) 504,200 HSBC Bank plc 8,773,000 Mellon Bank N.A. 1,543,500 Northern Trust AVFC (South Africa) 2,968,400 KAS UK 651,720 Mellon Nominees (UK) Limited 606,900 Bank One Limited 1,770,100 HSBC 75,000 JP Morgan Chase Bank 448,300 Raiffeisen Zentral Bank 2,069,000 Fortis Bank 46,400 Metzler Seel Sohn & Co. 534,000 Bayerische Hypo Und Vereinsbank AG 66,000 TOTAL 142,999,387 Capital International S.A. Registered Name Local Shares State Street Nominees Limited 122,000 Bank of New York Nominees 77,100 Chase Nominees Limited 3,011,810 Midland Bank plc 578,300 Barclays Bank 130,000 Pictet & Cie, Geneva 337,000 Nortrust Nominees 89,400 Morgan Stanley 103,700 J.P. Morgan 8,443,700 State Street Bank & Trust Co. 373,000 Lloyds Bank 153,000 Citibank NA (Toronto) 85,900 HSBC Bank plc 793,000 Lombard Odier Et Cie, Geneva 1,085,000 Metzler Seel Sohn & Co. 55,000 Credit Suisse, Zurich 200,000 TOTAL 15,637,910 Capital International, Inc. Registered Name Local Shares State Street Nominees Limited 5,248,100 Bank of New York Nominees 1,851,600 Northern Trust 109,000 Chase Nominees Limited 7,935,000 Midland Bank plc 213,500 Bankers Trust 44,000 Nortrust Nominees 1,159,126 State Street Bank & Trust Co. 576,600 Citibank 74,200 Citibank NA (Toronto) 1,054,700 HSBC Bank plc 98,000 JP Morgan Chase Bank 345,800 TOTAL 18,709,626
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: May 25, 2006