AMP LIMITED — Major Shareholding Notification 2015

Oct 26, 2015

Henderson Group plc

26 October 2015

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 Henderson Group plcof existing 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 Limited----- End of picture text -----

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

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----- Start of picture text ----- 4. Full name of shareholder(s) (if different from 3.): AMP Capital Asia Quant Fund,AUSCOAL SuperannuationFund, FSS Trustee CorporationATF First State Super Scheme,Government EmployeesSuperannuation Board,Stichting PensioenfondsHoogovens, IAG AssetManagement atf IAGAM EquityTrust, Insurance Manufacturersof Australia Pty Limited, QLDLocal Government SuperBoard, Suncorp GroupAustralia Equity Active Trustand Nikko AM AustralianShares Multi-Manager Fund5. Date of the transaction (and date on which the 23 October 2015threshold is crossed or reached if different):6. Date on which issuer notified: 26 October 20157. Threshold(s) that is/are crossed or reached: 3% (crossing below 3%)8. Notified details:A: Voting rights attached to sharesClass/t Situation previous to Resulting situation after the triggering transactionype of the Triggeringshares transaction if Number of Number of Number of Number of voting % of voting rightspossible Shares Voting shares rightsusing the RightsISINCODE Direct Direct Indirect Direct IndirectAU0000 35,019,448 35,019,448 33,988,184 31,566,298 2,421,886 2.779% 0.213%00HGG2(CDI)B: Financial InstrumentsResulting situation after the triggering transactionType of financial Expiration Exercise/ Conversion Number of voting % of votinginstrument date Period/ Date rights that may be rightsacquired if theinstrument is----- End of picture text -----

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

exercised/ converted. Total (A+B) Number of voting rights % of voting rights 33,988,184 2.992%

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

ANNEX NOTIFICATION OF MAJOR INTERESTS IN SHARES

A: Identity of the person or legal entity subject to the notification obligation	A: Identity of the person or legal entity subject to the notification obligation
Full name(including legal form for legal entities)	AMP Life Limited, AMP CapitalInvestors Limited, and Ipac AssetManagement Limited – each acompany incorporated in Australia
Contact address(registered office for legal entities)	33 Alfred StreetSydney New South Wales 2000Australia
Phone number	+61 2 9257 3615
Other useful information(at least legalrepresentative for legal persons)	Contact:NatalieKooyman,AMPCapital Investors Limited
B:Identity of the notifier, if applicable
Full name
Contact address
Phone number
Other useful information(e.g. functionalrelationship with the person or legal entity subject to thenotification obligation)

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