Rule 8.3 - HENDERSON GROUP PLC

On the Rule 8.3 report published yesterday, part of the long position was incorrectly shown as Derivatives. It should
have been shown as Relevant Securities. The breakdown is shown correctly on today's report.

FORM 8.3


    DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE
              (Rule 8.3 of the City Code on Takeovers and Mergers)


1.   KEY INFORMATION

Name of person dealing        BARCLAYS PLC
(Note 1)
Company dealt in              HENDERSON GROUP PLC
Class of relevant security    ORD GBP0.125
to which the dealings being
disclosed relate (Note 2)
Date of dealing               29 January 2009

2.   INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a)  Interests and short positions (following dealing) in the class of relevant
security dealt in (Note 3)

                            Long                     Short

                      Number       (%)         Number       (%)

(1) Relevant      56,073,763     7.73%        149,199     0.02%
securities
(2) Derivatives    1,493,479     0.21%        402,932     0.06%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total             57,567,242     7.94%        552,131     0.08%

(b)  Interests and short positions in relevant securities of the company, other
     than the class dealt in (Note 3)

Class of                    Long                     Short
relevant
security:

                  Number              (%)   Number              (%)

(1) Relevant
securities

(2) Derivatives
(other than
options)

(3) Options and
agreements to
purchase/sell

Total


  (c)  Rights to subscribe (Note 3)

Class of relevant security:   Details



3.   DEALINGS (Note 4)

  (a)  Purchases and sales

Purchase/sale   Number of Securities   Price per unit
Purchase        63,816                 .6322
Purchase        5,000                  .6150
Sale            98,478                 1.3963 AUD
Sale            8,637                  1.3849 AUD
Sale            68,047                 .6592
Sale            17,017                 .6225
Sale            16,543                 .6389
Sale            4,502                  .6225

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          17017         0.6224
CFD            Long          4502          0.6225
CFD            Long          16543         0.6389
CFD            Long          52541         0.6565
CFD            Long          68047         0.6592
CFD            Short         5000          0.615
CFD            Short         63816         0.6321
CFD            Short         24639         0.6538

(c)  Options transactions in respect of existing securities

(i)  Writing, selling, purchasing or varying

Product name,   Writing,          Number of          Exercise  Type, e.g.      Expiry   Option money
e.g. call       selling,          securities to      price     American,       date     paid/received
option          purchasing,       which the option             European etc.            per unit (GBP)
                varying etc.      relates (GBP)


(ii) Exercising

Product name, e.g.  Number of           Exercise price per
call option         securities          unit (Note 5)




(d)  Other dealings (including new securities) (Note 4)


Nature of transaction Details           Price per unit
(Note 8)                                (if applicable)
                                        (Note 5)




4.   OTHER INFORMATION
None

Agreements, arrangements or understandings relating to options or derivatives


Full details of any agreement, arrangement or understanding between the
person disclosing and any other person relating to the voting rights of
any relevant securities under any option referred to on this form or
relating to the voting rights or future acquisition or disposal of any
relevant securities to which any derivative referred to on this form is
referenced.  If none, this should be stated.




Is a Supplemental Form 8 attached? (Note 9)                 NO


Date of disclosure                         30 January 2009
Contact name                               Geoff Smith
Telephone number                           020 7116 2913
If a connected EFM, name of
offeree/offeror with which connected
If a connected EFM, state nature of
connection (Note 10)


Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk