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 31, 2007
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-
TR-1: notification of major interests in shares
1. Identity of the issuer or the underlying issuer of existing shares to which voting rights Signet Group plc
are attached:
2. Reason for the notification (please tick the appropriate box or boxes):
An acquisition or disposal of voting rights
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
Other (please specify): Change in outstanding total voting rights X
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: 29/05/07
6. Date on which issuer notified: 31/05/07
7. Threshold(s) that is/are crossed or reached: 9%
8. Notified details:
A: Voting rights attached to shares
Class/type of shares Situation previous to the Resulting situation after the triggering transaction
Triggering transaction
if possible using the
ISIN CODE
Number of Number of Number of shares Number of voting rights ix % of voting rights
Shares Voting Rights
viii
Direct Indirect Direct x Indirect xi Direct Indirect
Ordinary Shares 153,523,876 153,523,876 153,514,576 153,514,576 9.0051%
B: Financial Instruments
Resulting situation after the triggering transaction xii
Type of financial instrument Expiration date xiii Exercise/ Conversion Period/ Date Number of voting rights that may be % of voting rights
xiv acquired if the instrument is
exercised/ converted.
N/A
Total (A+B)
Number of voting rights % of voting rights
153,514,576 9.0051%
9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable xv:
Capital Group International Inc. ("CGII") holdings Number of shares Percent of outstanding
Holidngs by CGII Management Companies and Funds: 153,514,576 9.005%
Capital Guardian Trust Company
Capital International Limited
Capital International S.A. 9,099,660 0.534%
Capital International, Inc. 111,539,380 6.543%
16,908,910 0.992%
15,966,626 0.937%
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:
Identity of the notifier
Full name: Mark Andrew Jenkins - Group Company Secretary
Contact address: Signet Group plc, 15 Golden Square, London, W1F 9JG
Phone number: 0870 90 90 301
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: May 31, 2007