Henderson Group - Holding(s) in Company - Suncorp

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

Henderson 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

Other (please specify):___________________________________________

3. Full name of person(s) subject to the notification obligation:

Suncorp-Metway Limited and its subsidiaries as listed in Section 9

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 if different):

06/09/2010

6. Date on which issuer notified:

08/09/2010

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

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 Voting Rights

Number of shares

Number of voting rights

% of voting rights

Direct

Indirect

Direct

Indirect

Ordinary Shares

39,712,976

39,712,976

41,745,959

41,745,959

5.0524%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period/ Date

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

% of voting rights

Total (A+B)

Number of voting rights

% of voting rights

41,745,959

5.0524%

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

Please see Annexure 1

Proxy Voting:

10. Name of the proxy holder:

Suncorp-Metway Limited and its subsidiaries as listed in Section 9

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:

Level 18, Suncorp Centre, 36 Wickham Terrace, BRISBANE, QLD, AUSTRALIA 4000

14. Contact name:

Corporate Secretary - Mr Cliff Chuter

15. Contact telephone number:

+61 (07) 3835 5214

Holder of Relevant Interest

Registered Holder of Securities

Persons Entitled to be Registered as Holder

% of Issue

New Zealand Guardian Trust Company Limited

ANZ Nominees Custodian Services Melbourne

7,913

0.000010

Suncorp Metway Investment Management Limited

Suncorp Custodian Services Pty Limited

1,442,626

0.001746

Suncorp Portfolio Services Limited

Suncorp Portfolio Services Limited

336

0.000000

Tyndall Investment Management Limited

BNP Paribas Securities Services

12,603,311

0.015256

Tyndall Investment Management Limited

JP Morgan Worldwide Securities Services

361,402

0.000437

Tyndall Investment Management Limited

National Nominees Limited

9,844,445

0.011917

Tyndall Investment Management Limited

State Street Australia Limited

1,337,400

0.001619

Tyndall Investment Management Limited

Tasman Asset Management Limited

16,148,526

0.019548