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 January 12, 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-

NOTIFICATION OF TRANSACTIONS OF DIRECTORS, PERSONS DISCHARGING MANAGERIAL RESPONSIBILITY OR CONNECTED PERSONS

This form is intended for use by an issuer to make a RIS notification required by DR 3.1.4R(1).

(1)         An issuer making a notification in respect of a transaction relating to the shares or debentures of
            the issuer should complete boxes 1 to 16, 23 and 24.
(2)         An issuer making a notification in respect of a derivative relating the shares of the issuer should
            complete boxes 1 to 4, 6, 8,13, 14, 16, 23 and 24.
(3)         An issuer making a notification in respect of options granted to a director/person discharging
            managerial responsibilities should complete boxes 1 to 3 and 17 to 24.
(4)         An issuer making a notification in respect of a financial instrument relating to the shares of the
            issuer (other than a debenture) should complete boxes 1 to 4, 6, 8, 9, 11, 13, 14, 16, 23 and 24.

Please complete all relevant boxes should in block capital letters.

1. Name of the issuer

Signet Group plc

2. State whether the notification relates to (i) a transaction notified in accordance with DR 3.1.4R(1)(a); or

(ii) DR 3.1.4(R)(1)(b) a disclosure made in accordance with section 324 (as extended by section 328) of the Companies Act 1985; or

(iii) both (i) and (ii)


(ii)

3. Name of person discharging managerial responsibilities/director

Walker Boyd

4. State whether notification relates to a person connected with a person discharging managerial responsibilities/director  named in 3
and identify the connected person

No

5.  Indicate  whether  the  notification  is in  respect  of a holding  of the  person  referred  to in 3 or 4 above or in respect of a
non-beneficial interest

As in 3. above

6. Description of shares (including class), debentures or derivatives or financial instruments relating to shares

0.5p ordinary shares

7. Name of registered shareholders(s) and, if more than one, the number of shares held by each of them

- -

8 State the nature of the transaction

Exercise of LTIP options granted in 2003 and 2004 and subsequent sale of shares

Exercise of Executive options granted in April 1999 and subsequent sale of shares

9. Number of shares, debentures or financial instruments relating to shares acquired

650,637

10. Percentage of issued class acquired (treasury shares of that class should not be taken into account when calculating percentage)

0.0379

11. Number of shares, debentures or financial instruments relating to shares disposed

650,637

12. Percentage of issued class disposed (treasury shares of that class should not be taken into account when calculating percentage)

0.0379

13. Price per share or value of transaction

Selling price of £1.202162 per share

14. Date and place of transaction

12 January 2007 - London

15. Total holding following  notification and total percentage holding following  notification (any treasury shares should not be taken
into account when calculating percentage)

452,495

16. Date issuer informed of transaction

12 January 2007

If a person discharging managerial responsibilities has been granted options by the issuer complete the following boxes

17 Date of grant

....................................

18. Period during which or date on which it can be exercised

....................................

19. Total amount paid (if any) for grant of the option

....................................

20. Description of shares or debentures involved (class and number)

....................................

21. Exercise price (if fixed at time of grant) or indication that price is to be fixed at the time of exercise

....................................

22. Total number of shares or debentures over which options held following notification

....................................

23. Any additional information

....................................

24. Name of contact and telephone number for queries

Mark Jenkins 0870 90 90 301

Name and signature of duly authorised officer of issuer responsible for making notification

Mark Jenkins

Date of notification

12 January 2007

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:    January 12, 2007