AMP LIMITED — Major Shareholding Notification 2014

Mar 24, 2014

Henderson Group plc

24 March 2014

Attached is a notification which was required to be announced under London Stock Exchange Listing Rules.

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:

Henderson Group plc

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

==> picture [423 x 4] intentionally omitted <==

An acquisition or disposal of voting rights

X

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

==> picture [423 x 5] intentionally omitted <==

An event changing the breakdown of voting rights

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Other (please specify):

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

AMP Life Limited, AMP Capital Investors Limited, Ipac Asset Management Limited

4. Full name of shareholder(s) (if different from 3.): AMP Capital Asia Quant Fund, FSS Trustee Corporation ATF First State Super Scheme, Government Employees Superannuation Board, IAG Asset Management atf IAGAM Equity Trust, Insurance Manufacturers of Australia Pty Limited, Russell Investment Management Limited and Stichting Pensioenfonds ABP

269500v1 HGI SSN notification (7(2) December 2010).DOC

5. Date of the transaction (and date on which the 21 March 2014 threshold is crossed or reached if different):

6. Date on which issuer notified:

24 March 2014

7. Threshold(s) that is/are crossed or reached: 3% (crossing below 3%)

8. Notified details:

A: Voting rights attached to shares

Class/t Situation previous to Resulting situation after the triggering transaction ype of the Triggering shares transaction if Number of Number of Number of Number of voting % of voting rights possible Shares Voting shares rights using the Rights ISIN CODE Direct Direct Indirect Direct Indirect AU0000 43,989,873 43,989,873 33,203,392 30,366,887 2,836,505 2.701% 0.252% 00HGG2 (CDI)

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial Expiration Exercise/ Conversion Number of voting % of voting instrument date Period/ Date rights that may be rights acquired if the instrument is exercised/ converted. Total (A+B) Number of voting rights % of voting rights 33,203,392 2.953%

269500v1 HGI SSN notification (7(2) December 2010).DOC

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

AMP Life Limited is an indirect wholly owned subsidiary of AMP Limited

AMP Capital Investors Limited is an indirect wholly owned subsidiary of AMP Limited

Ipac Asset Management Limited is an indirect wholly owned subsidiary of AMP Limited

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: Level 24, AMP Sydney Cove Building 33 Alfred Street Sydney New South Wales 2000 Fax: +61 2 9257 1541

14. Contact name: Prue Milne, Executive Legal Counsel, AMP Capital Investors Limited 15. Contact telephone number: +61 2 9257 1511

C: Additional information

269500v1 HGI SSN notification (7(2) December 2010).DOC