AMP LIMITED — Major Shareholding Notification 2016

Jan 19, 2016

Henderson Group plc

19 January 2016

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

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

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1. Identity of the issuer or the underlying issuer of Henderson Group plcexisting shares to which voting rights areattached:2. Reason for the notification (please tick the appropriate box or boxes)An acquisition or disposal of voting rightsXAn acquisition or disposal of financial instruments which may result in theacquisition of shares already issued to which voting rights are attachedAn event changing the breakdown of voting rightsOther (please specify):3. Full name of person(s) subject to the AMP Life Limited, AMP Capitalnotification obligation: Investors Limited, Ipac AssetManagement Limited4. Full name of shareholder(s) (if different from 3.): AUSCOAL SuperannuationFund, FSS Trustee CorporationATF First State Super Scheme,Stichting PensioenfondsHoogovens, IAG AssetManagement atf IAGAM EquityTrust, Insurance Manufacturersof Australia Pty Limited, QLDLocal Government Super Board,Suncorp Group Australia EquityActive Trust and Nikko AMAustralian Shares Multi-Manager Fund----- End of picture text -----

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

5. Date of the transaction (and date on which the 18 January 2016 threshold is crossed or reached if different):

6. Date on which issuer notified:

19 January 2016

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

8. Notified details:

A: Voting rights attached to shares

Class/ty Situation previous to Resulting situation after the triggering transaction pe of the Triggering shares transaction if possible Number of Number of Number of Number of voting % of voting rights using the ISIN Shares Voting Rights shares rights CODE Direct Direct Indirect Direct Indirect AU000000 34,058,044 34,058,044 33,421,966 31,636,169 1,785,797 2.795% 0.158% HGG2(CD I)

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 33,421,966 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: 33 Alfred Street Sydney New South Wales 2000 Australia Fax: +61 2 9257 1599

14. Contact name: Natalie Kooyman, Head of Enterprise Risk Management, AMP Capital Investors Limited

15. Contact telephone number: +61 2 9257 3615

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