Henderson Group - Dividend Rate

Dividend rate

4 May 2012

Henderson Group plc wishes to confirm that shareholders on the register at 5.00pm today, the Record Date, will be entitled to a final dividend in respect of the financial year ended 31 December 2011 of 5.05 pence per ordinary share.

For holders of CHESS Depositary Interests (CDIs), the A$ or the NZ$ equivalent will be 7.944751 cents* (Australia) and 10.173957 cents* (New Zealand) per CDI respectively.

The dividend will be paid on 25 May 2012.

The timetable is as follows:

Record Date for dividend Friday 4 May

Processing recommences for requests by CDI holders to

convert CDIs into ordinary shares or by ordinary shareholders

to convert ordinary shares into CDIs Monday 7 May

Dividend payment date Friday 25 May

\* The exchange rates that have been applied in translating the dividend amount are as follows: £1 = A$ 1.573218 and £1 = NZ$ 2.014645.

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