Issue of Equity

Henderson High Income Trust PLC
27 September 2005


NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN OR INTO THE UNITED STATES,
CANADA, AUSTRALIA, THE REPUBLIC OF IRELAND OR JAPAN.

Henderson High Income Trust plc

27 September 2005

Admission to the Official List

The Board of Henderson High Income Trust plc (the "Company") announces today
that a total of 11,783,933 Ordinary Shares of 5p each ("Shares") have been
issued and allotted to subscribers under the placing and offer. The Shares were
issued at a price of 147.25p per Share, which represents a premium of 1.5% over
the net asset value calculated in respect of the Issue as at close of business
on 26 September 2005 being the Calculation Date.

Following application for admission to the Official List made to the UK Listing
Authority and to the London Stock Exchange for admission to trading, dealings in
the Shares are expected to commence on 29 September 2005. CREST accounts are
expected to be credited in respect of Shares issued in uncertificated form on 29
September 2005 and certificates in respect of Shares issued in certificated form
are expected to be issued in the week commencing 3 October 2005.


Expected timetable
                                                                                                       2005
Dealings commence in the New Ordinary Shares                                      8.00 a.m. on 29 September
CREST Accounts credited                                                                        29 September
Company's register of members in respect of holdings of                   Close of business on 29 September
ZDPs and Units closed
Dealings in the Units and ZDPs suspended                                          7.30 a.m. on 30 September
Extraordinary General Meeting of the Subsidiary                                  11.00 a.m. on 30 September
Share certificates in respect of New Ordinary Shares                              Week commencing 3 October
despatched
Final capital entitlement of ZDPs repaid                                                          3 October



Enquiries

William Eason                                         020 7567 0285
Chairman, Henderson High Income Trust plc

Angus Gordon Lennox                                   020 7588 2828
JPMorgan Cazenove Limited

James de Sausmarez                                    020 7818 3349
Henderson Global Investors Limited



The New Ordinary Shares will not be registered under the United States
Securities Act 1933 or the relevant securities laws of any state of the United
States, or under any of the relevant securities laws of Canada, Japan, the
Republic of South Africa, or Australia, and, accordingly, the Issue is not being
made and the New Ordinary Shares may not be offered, sold, resold, delivered or
transferred, directly or indirectly, in or into the United States, Canada,
Japan, the Republic of South Africa, or Australia.

END

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