Janus Henderson (JHG) F-4 Registration of securities (foreign)

Exhibit 21.1

Henderson Group plc — Subsidiaries — 17 March 2017

	Country of incorporation and principal place of operation	Functional currency	Percentage owned		Principal activity
Advizas Limited	UK	GBP	100	%	Company in liquidation
Alphagen Capital Limited	UK	GBP	100	%	Investment management services
CLOF II UK Limited	UK	GBP	100	%	Company in liquidation
Gartmore Group Limited	Cayman Islands	GBP	100	%	Holding company
Gartmore Investment Limited	UK	GBP	100	%	Investment management services
Gartmore Investment Management Limited	UK	GBP	100	%	Holding company
Gartmore Investment Services GmbH	Germany	EUR	100	%	Company in liquidation
Gartmore Investment Services Limited	UK	GBP	100	%	Holding company
Gartmore Services Limited	Jersey	GBP	100	%	Professional services
Geneva Capital Management LLC	USA	USD	100	%	Investment management services
Gibran Securities Pty Limited	Australia	AUD	100	%	In liquidation
G.I.L. Nominees Limited	UK	GBP	100	%	In liquidation
H3 Global Advisors Limited	UK	GBP	100	%	Company in liquidation
H3 Global Advisors Pty Limited	Australia	AUD	100	%	In liquidation
Henderson Administration Limited	UK	GBP	100	%	Administrative services
Henderson AE Pty Limited	Australia	AUD	100	%	Company in liquidation
Henderson AFI Pty Limited	Australia	AUD	100	%	Company in liquidation
Henderson Alternative Investment Advisor Limited	UK	GBP	100	%	Holding company
Henderson Asset Management Limited	UK	GBP	100	%	Holding company
Henderson Equity Holdings LLC	USA	USD	100	%	Holding company
Henderson Equity Partners (GP) Limited	UK	GBP	100	%	General partner
Henderson Equity Partners Funds Limited	Jersey	GBP	100	%	Investment holding company
Henderson Equity Partners India Private Limited	India	INR	100	%	Investment management services
Henderson Equity Partners Jersey (GP) Limited	Jersey	GBP	100	%	General partner
Henderson Equity Partners Limited	UK	GBP	100	%	Investment management services
Henderson Finances	UK	GBP	100	%	Company in liquidation
Henderson Fund Management (Luxembourg) SA	Luxembourg	EUR	100	%	Company in liquidation
Henderson Fund Management Limited	UK	GBP	100	%	Investment management services
Henderson Global Group Limited	Ireland	GBP	100	%	Holding company
Henderson Global Investors (Australia) Funds Management Limited	Australia	AUD	100	%	Investment management services
Henderson Global Investors (Australia) Institutional Funds Management Limited	Australia	AUD	100	%	Investment management services
Henderson Global Investors (Australia) Limited	Australia	AUD	100	%	Administrative services
Henderson Global Investors (Brand Management) Sarl	Luxembourg	GBP	100	%	Intellectual property
Henderson Global Investors (Holdings) Limited	UK	GBP	100	%	Holding company
Henderson Global Investors (Hong Kong) Limited	Hong Kong	HKD	100	%	Investment management services
Henderson Global Investors (International Holdings) BV	Netherlands	EUR	100	%	Holding company

Henderson Global Investors (Ireland) Limited	Ireland	EUR	100	%	Company in liquidation
Henderson Global Investors (Japan) Limited	Japan	JPY	100	%	Investment management services
Henderson Global Investors (North America) Inc	USA	USD	100	%	Investment management services
Henderson Global Investors (Schweiz) AG	Switzerland	CHF	100	%	Marketing services
Henderson Global Investors (Singapore) Limited	Singapore	SGD	100	%	Investment management services
Henderson Global Investors Asset Management Limited	UK	GBP	100	%	Holding company
Henderson Global Investors BV	Netherlands	EUR	100	%	Marketing services
Henderson Global Investors Equity Planning Inc	USA	USD	100	%	Investment management services
Henderson Global Investors Geneva (Luxembourg) Finance SA	Luxembourg	USD	100	%	Group financing
Henderson Global Investors Geneva Finance Limited	UK	USD	100	%	Holding company
Henderson Global Investors Limited	UK	GBP	100	%	Investment management services
Henderson Global Investors NPC Holdings LLC	USA	USD	100	%	Holding company
Henderson Group Holdings Asset Management Limited	UK	GBP	100	%	Holding company
Henderson Holdings Group BV	Netherlands	GBP	100	%	Holding company
Henderson Holdings Group Limited	UK	GBP	100	%	Holding company
Henderson Holdings Limited	UK	GBP	100	%	Holding company
Henderson International GP LLC	USA	USD	100	%	General partner
Henderson International Inc	USA	USD	100	%	Holding company
Henderson Investment Consulting (Beijing) Limited	China	CNY	100	%	Investment management services
Henderson Investment Funds Limited	UK	GBP	100	%	Investment management services
Henderson Investment Management Limited	UK	GBP	100	%	Investment management services
Henderson Management SA	Luxembourg	USD	100	%	Investment management services
Henderson Nominees Limited	UK	GBP	100	%	Dormant company
Henderson Secretarial Services Limited	UK	GBP	100	%	Company secretarial services
Henderson UK Finance Limited	UK	GBP	100	%	In liquidation
Henderson Unit Trusts Limited	UK	GBP	100	%	Dormant company
HEP (GP) Limited	UK	GBP	100	%	General partner
HGI (Investments) Limited	UK	GBP	100	%	Investment holding company
HGI Asset Management Group Limited	UK	GBP	100	%	Holding company
HGI Group Limited	UK	GBP	100	%	Holding company
HGI OMP UK Limited	UK	GBP	100	%	In liquidation
HGP2 Limited	UK	GBP	100	%	General partner
HGP3 Limited	UK	GBP	100	%	In liquidation
HGP4 Limited	UK	GBP	100	%	In liquidation
HGP5 Limited	UK	GBP	100	%	In liquidation
Horizon Orbit Corporation	USA	USD	100	%	Merger subsidiary
HPC Nominees Limited	UK	GBP	100	%	Dormant company
New Star Asset Management (Bermuda) Limited	Bermuda	GBP	100	%	Investment management services
New Star Asset Management Group Limited	UK	GBP	100	%	Holding company
Oxford Acquisition III Limited	UK	GBP	100	%	In liquidation

UKFP (Asia) Nominees Limited	British Virgin Islands	HKD	100	%	Dormant company
90 West Asset Management Limited	Australia	AUD	100	%	Company in liquidation

Henderson Group plc - Interests in joint ventures - 17 March 2017

	Country of incorporation and principal place of operation	Functional currency	Percentage owned		Principal activity
Northern Pines Henderson Capital GP LLC	USA	USD	50	%	Investment management services
Northern Pines Henderson Capital LLC	USA	USD	50	%	Investment management services
Optimum Investment Management Limited	UK	GBP	50	%	Investment management services

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