Listing Rule 21

Henderson High Income Trust PLC
04 October 2004

HENDERSON HIGH INCOME TRUST PLC

HENDERSON GLOBAL INVESTORS

4 OCTOBER 2004



                        HENDERSON HIGH INCOME TRUST PLC

                                Listing Rule 21


In accordance with paragraph 21.20 (l) (ii) 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
2004:

Company

BP

HBOS

European Investment Bank 6% 2028 Bond

HSBC

Shell Transport & Trading

Royal Bank of Scotland

BT

Aviva

National Grid Transco

Scottish & Southern Energy

This excludes group investments.




                                    - ENDS -



For further information, please call:


Alex Crooke

Henderson High Income Trust plc

Telephone: [phone]


Stephen Westwood

Head of Investment Trusts

Henderson Global Investors

Telephone: [phone]



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