Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

SIG plc

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

√

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 the notification obligation:

 Ameriprise Financial Inc and its group

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

See additional information under 13

5. Date of the transaction and date on which the threshold is crossed or reached:

14 October 2009

6. Date on which issuer notified:

15 October 2009 

7. Threshold(s) that is/are crossed or reached:

Below the threshold of 5%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

 GB0008025412

30,059,312

30,059,312

513,565

513,565

27,439,029

0.087%

4.644%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

CFD

1,000,436

Nominal

Delta

0.169% 

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 28,953,030

4.900%

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

Ameriprise Financial Inc which through intermediate holding companies controls the voting rights of Threadneedle Management Luxembourg S.A. and Threadneedle Asset Management Holdings Ltd which itself controls the voting rights of Threadneedle Asset Management Ltd, Threadneedle International Ltd and Threadneedle Pensions Ltd.

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:

Registered Owner

Chetwynd Nominees Ltd IPB

Morgan Stanley Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Morgan Stanley Nominees Ltd

Morgan Stanley Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

Littledown Nominees Ltd

A/c

XTHRF11

04F607602

02891

05577

05576

07198

07197

10478

10479

36199146

36199142

07203

07205

21667

21688

34789

07207

07199

10491

10488

10489

10490

02642

15,000

33,436

15,889,015

200,075

2,420,000

381,065

132,500

75,805

16,500

252,000

700,000

112,000

327,137

41,600

116,776

196,000

609,428

32,323

909,050

2,356,885

2,808,164

580,000

748,271

14. Contact name:

Company Secretary, Threadneedle Group

15. Contact telephone number:

+44 (0)20 7464 5000