HGG.L Regulatory News (HGG)

Trading update

15 December 2011

Henderson Group plc ('the Group') will be announcing its results for the year ending 31 December 2011 on 29 February 2012.

However, in order to comply with ASX listing rules, it provides an update today to advise that underlying profit¹ for the year ending 31 December 2011 is expected to be between £155 million and £159 million (FY10: £100.7 million). Within this, the Group currently expects that performance fees will be approximately £11 million in 2H11.

¹ Before intangible amortisation, Gartmore related employee share awards, void property finance charge, non-recurring items and tax.

 Henderson Group plc

47 Esplanade

St Helier

Jersey JE1 0BD

Registered in Jersey

No. 101484

ABN 67 133 992 766

Forward-looking statements

This announcement contains forward-looking statements with respect to the financial condition, results and business of Henderson Group. By their nature, forward-looking statements involve risk and uncertainty because they relate to events, and depend on circumstances, that will occur in the future. Henderson Group's actual future results may differ materially from the results expressed or implied in these forward-looking statements. Nothing in this announcement should be construed as a profit forecast.