Listing Rule 15.4.10(2)

Henderson High Income Trust PLC
04 July 2005


HENDERSON HIGH INCOME TRUST PLC

HENDERSON GLOBAL INVESTORS

4 JULY 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 June
2005:


Company
BT
Shell Transport & Trading
HBOS
BP
Aviva
HSBC
Royal Bank of Scotland
National Grid Transco
Scottish & Southern Energy
Gallaher

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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