Portfolio Update

Henderson High Income Trust PLC
04 October 2005



HENDERSON HIGH INCOME TRUST PLC
HENDERSON GLOBAL INVESTORS

4 OCTOBER 2005

                        HENDERSON HIGH INCOME TRUST PLC

                            Listing Rule 15.4.10(2)


In accordance with paragraph 15.4.10(2) of the Listing Rules, Henderson High
Income Trust plc announces its ten largest investments, including all
investments with a value greater than 5% of its gross assets, as at 30 September
2005:

Company
BP
Royal Dutch Shell
BT
HBOS
Gallaher
British American Tobacco
Scottish & Southern Energy
Friends Provident
United Utilities
GlaxoSmithKline

This excludes group investments.

                                    - ENDS -


For further information, please call:

Alex Crooke
Henderson High Income Trust plc
Telephone: [phone]

James de Sausmarez
Head of Investment Trusts
Henderson Global Investors
Telephone: [phone]



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