LETTER AGREEMENT

Henderson Global Investors (North America) Inc.
737 N. Michigan, Suite 1700
Chicago, Illinois  60611

         This Agreement is made as of this 29th day of August 2008 between
HENDERSON GLOBAL INVESTORS (NORTH AMERICA) INC. (the "Adviser") and HENDERSON
INVESTMENT MANAGEMENT LIMITED (the "Subadviser").

         WHEREAS, the Adviser and the Subadviser have entered into a
Sub-Advisory Agreement dated August 31, 2001 (the "Sub-Advisory Agreement"), as
amended by letter agreement dated August 1, 2005, January 31, 2006, November 30,
2006, December 29, 2007 and January 31, 2008 under which the Adviser has agreed
to retain the Subadviser to render investment advisory services to the Henderson
European Focus Fund, Henderson Global Equity Income Fund, Henderson Global
Opportunities Fund, Henderson Global Real Estate Equities Fund, Henderson Global
Technology Fund, Henderson International Equity Fund, Henderson International
Opportunities Fund and Henderson Japan-Asia Focus Fund (the "Existing HIML
Sub-Advised Portfolios") of the Henderson Global Funds (the "Trust"), and the
Subadviser has agreed to render such services to the Existing HIML Sub-Advised
Portfolios, together with any other Trust portfolios that may be established
later;

         WHEREAS, pursuant to Paragraph 1 of the Sub-Advisory Agreement, the
Adviser hereby notifies the Subadviser of its desire to retain the Subadviser to
render investment advisory services to one additional portfolio of the Trust to
be known as the Henderson Industries of the Future Fund (the "New Portfolio");
and

         WHEREAS, by signing this Agreement below, the Subadviser agrees to
render such services, whereupon the New Portfolio shall become a Portfolio under
the Sub-Advisory Agreement.

         NOW THEREFORE, in consideration of the premises and mutual covenants
set forth herein, the Adviser and the Subadviser agree as follows:

1.       The Adviser hereby appoints the Subadviser as subadviser for the
         Henderson Industries of the Future Fund under the Sub-Advisory
         Agreement and the Subadviser hereby accepts such appointment and agrees
         to perform the services and duties set forth in the Sub-Advisory
         Agreement for such portion of the assets of the New Portfolio as
         Adviser shall from time to time designate on the terms set forth
         therein, except as otherwise provided in this Agreement.

2.       This Agreement shall become effective as of the date first above
         written and, unless sooner terminated as provided in Paragraph 3 of the
         Sub-Advisory Agreement, shall continue until August 30, 2009.
         Thereafter, this Agreement will be extended with respect to the New
         Portfolio for successive one-year periods ending on August 30 of each
         year, subject to the provisions of Paragraph 3 of the Advisory
         Agreement.



3.       For the services provided and the expenses assumed under this
         Agreement, the Adviser shall pay the Subadviser a fee based on the
         assets managed by the Subadviser, computed daily and payable monthly,
         at an annual rate equal to:

         Henderson Industries of the Future Fund:

         0.45% on the first $500 million of average daily net assets;
         0.35% on the next $1 billion of average daily net assets; and
         0.30% on average daily net assets over $1.5 billion

4.       All the other terms and conditions of the Sub-Advisory Agreement shall
         remain in full effect.

5.       This Agreement is hereby incorporated by reference into the
         Sub-Advisory Agreement and is made a part thereof. In case of a
         conflict between this Agreement and the Sub-Advisory Agreement, the
         terms of the Sub-Advisory Agreement are controlling.

         IN WITNESS WHEREOF, the Adviser and the Subadviser have cause this
Agreement to be executed as of the day and year first above written.

                                                    HENDERSON GLOBAL INVESTORS
                                                    (NORTH AMERICA) INC.


                                                    By:  /s/ James O'Brien
                                                         -----------------
                                                         Name:  James O'Brien
                                                         Title:

                                                    HENDERSON INVESTMENT
                                                    MANAGEMENT LIMITED


                                                    By:  /s/ Nicholas T. Hiscock
                                                         -----------------------
                                                         Name:
                                                         Title:


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