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 July 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 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: BT Pension Scheme Trustees Limited as trustee of the BT Pension Scheme. See Section 9 for further information 4. Full name of shareholder(s) (if different from 3.) N/A 5. Date of the transaction and date on which the threshold is crossed or reached: 30 July 2007 6. Date on which issuer notified: 31 July 2007 7. Threshold(s) that is/are crossed or reached: 4% 8. Notified details: A: Voting rights attached to shares Class/ Situation previous Resulting situation after the triggering type of to the Triggering transaction shares transaction if possible Number Number of Number of Number of voting % of voting using of Voting Rights shares rights ix rights the ISIN Shares viii CODE Direct Indirect Direct x Indirect Direct Indirect xi B1HTFP6 GB00B1HTFP68 ORD US$0.009 68,177,431 68,177,431 2,373,835 2,373,835 65,917,956 0.139% 3.866% B: Financial Instruments Resulting situation after the triggering transaction xii Type of Expiration Exercise/ Number of voting rights that may % of financial date xiii Conversion be acquired if the instrument is voting instrument Period/ Date exercised/ converted. rights xiv Total (A+B) Number of voting rights % of voting rights 68,291,791 4.005% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable xv: BT Pension Scheme Trustees Limited is the parent undertaking of Britel Fund Trustees Limited, which is the parent undertaking of Hermes Pensions Management Limited. Hermes Pensions Management Limited is the parent undertaking of: 1.Hermes Investment Management Limited (voting rights held in this issuer: 0.664%).. 2.Hermes Focus Asset Management Limited (voting rights held in this issuer: 3.247%) 3.Hermes Equity Ownership Services limited (voting rights held in this issuer: 0.094%) 4.Hermes Assured Limited (included with number 1.) Please see Section 13 for further information. Proxy Voting: 10. Name of the proxy holder: See Comment in Section 13. 11. Number of voting rights proxy holder will cease to hold: See Comment in Section 13. 12. Date on which proxy holder will cease to hold voting rights: See Comment in Section 13. 13. Additional information: Hermes Equity Ownership Services Limited hold the voting rights under a standing proxy contained in services agreements for the provision of corporate governance services to various underlying clients. Hermes Investment Management Limited hold the voting rights under a standing proxy contained in investment management agreements with various underlying clients, which includes all the shares owned directly by BT Pension Scheme Hermes Focus Asset Management Limited hold the voting rights as General Partner under a standing proxy contained in limited partnership agreements with various limited partnerships. All voting rights held on behalf of the above entities are aggregated for the purposes of DTR 5.2.1(a). The aggregation is made at the lower threshold of 3% and above because Hermes Equity Ownership Services Limited does not manage investments for the purposes of the investment manager exemption contained in DTR 5.1.5. This disclosure is made by BT Pension Scheme Trustees Limited, which is the ultimate parent undertaking for the purposes of DTR 5.2.1(e). 14. Contact name: Margaret Moss/Valerie Davidson 15. Contact telephone number: 020 7680 2125/ 020 7680 2177 ANNEX NOTIFICATION OF MAJOR INTERESTS IN SHARES XVI A: Identity of the person or legal entity subject to the notification obligation Full name (including legal form for legal entities) BT Pension Scheme Trustees Limited as trustee of the BT Pension Scheme and Hermes Pensions Management Limited Contact address (registered office for legal entities) Lloyds Chambers, 1 Portsoken Street, London E1 8HZ Phone number 020 7702 0888 Other useful information (at least legal representative for legal persons) BT Pension Scheme Trustees Limited is the parent undertaking of the group of companies subject to the notification obligation as indirect holders of voting rights for the purpose of DTR 5.2.1(a) and 5.2.1(e). 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
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: July 31, 2007