Henderson Group - Blocklisting Interim Review

Name of applicant:

HENDERSON GROUP PLC

Name of scheme:

HENDERSON GROUP PLC EXECUTIVE SHARED OWNERSHIP PLAN

Period of return:

From:

7 MARCH 2011

To:

31 JULY 2011

Balance of unallotted securities under scheme(s) from previous return:

2,500,000 (block listed on 7 March 2011)

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

NIL

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

2,268,500

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

231,500

Name of contact:

MR MATTHEW PURKIS

Telephone number of contact:

020 7818 2959