Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached: ii

SIGNET JEWELERS LIMITED

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 qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to thenotification obligation: iii

FMR LLC

4. Full name of shareholder(s)  (if different from 3.):iv

FMR LLC is the parent holding company of Fidelity Management & Research Company (FMRCO), investment manager for US mutual funds, and FIL Management Trust Company (FMTC) and Pyramis Global Advisors Trust Company (PGATC), a US state chartered bank which acts as a trustee or investment manager of various pension and trust accounts and Pyramis Global Advisors LLC (PGALLC).

Shares Held Nominee Management Co.

65,300 Bank of New York FMRCO

298,100 Brown Brothers Harriman and Co FMR

451,400 Citibank NA FMRCO

823,800 JP Morgan Chase Bank FMRCO

1,000 JP Morgan Chase Bank FMR

13,700 Mellon Bank N.A. FMRCO

1,600,100 Northern Trust Co FMRCO

19,600 State Street Bank and Trust Co FCL

21,900 State Street Bank and Trust Co PTC

472,500 Citibank NA (C) FMR

2,600 Mellon Bank NA (C) FMR

519,100 Mellon Bank NA (C) PTC

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

30 November 2010

6. Date on which issuer notified:

02 December 2010

7. Threshold(s) that is/are crossed orreached: vi, vii

5%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

BMG812761002

4,264,100

4,264,100

4,289,100

4,289,100

5.00

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

4,289,100

5.00

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi

FMR LLC is the parent holding company of Fidelity Management & Research Company (FMRCO), investment manager for US mutual funds, and FIL Management Trust Company (FMTC) and Pyramis Global Advisors Trust Company (PGATC), a US state chartered bank which acts as a trustee or investment manager of various pension and trust accounts and Pyramis Global Advisors LLC (PGALLC).

Shares Held Nominee Management Company

65,300 Bank of New York FMRCO

298,100 Brown Brothers Harriman and Co FMR

451,400 Citibank NA FMRCO

823,800 JP Morgan Chase Bank FMRCO

1,000 JP Morgan Chase Bank FMR

13,700 Mellon Bank N.A. FMRCO

1,600,100 Northern Trust Co FMRCO

19,600 State Street Bank and Trust Co FCL

21,900 State Street Bank and Trust Co PTC

472,500 Citibank NA (C) FMR

2,600 Mellon Bank NA (C) FMR

519,100 Mellon Bank NA (C) PTC

Proxy Voting:

10. Name of the proxy holder:

FIL Limited

11. Number of voting rights proxy holder will acquire:

25,000

12. Date on which proxy holder will acquire voting rights:

30 November 2010

13. Additional information:

None

14. Contact name:

Robert Crayston

15. Contact telephone number:

[email protected], 01737 836241