Henderson Group - Director/PDMR Shareholding

Director/PDMR shareholding: Disclosure and Transparency Rules 3.1.4R(1)(a)

4 April 2011

On 1 April 2011 the following ordinary shares in Henderson Group plc were purchased on behalf of the following Non-Executive Directors of Henderson Group plc at a price of 169.90 pence per share. These shares were acquired on-market on behalf of the Non-Executive Directors in lieu of a portion of annual Non-Executive Director's fees for 2011.

DIRECTOR HENDERSON TOTAL

GROUP PLC BENEFICIAL

SHARES PURCHASED INTEREST

FOLLOWING THIS

NOTIFICATION

Rupert Pennant-Rea 6,322 57,655

Gerald Aherne 3,472 13,043

Duncan Ferguson 4,340 18,028

Tim How 1,559 7,457

Robert Jeens 3,413 9,258

Henderson Group plc

47 Esplanade,

Jersey JE1 0BD

Registered in JerseyNo. 101484

ARBN 133 992 766