Portfolio Update

Henderson High Income Trust PLC
03 July 2007



HENDERSON HIGH INCOME TRUST PLC

HENDERSON GLOBAL INVESTORS

3 July 2007


                        HENDERSON HIGH INCOME TRUST PLC

                           Listing Rule 15.4.11 (2)


In accordance with paragraph 15.4.11 (2) of the Listing Rules, Henderson High
Income Trust plc announces its ten largest investments as at 30 June 2007.
Holdings with a value greater than 5% of gross assets are marked*.


Company
UK Treasury 5% 2008*
HSBC
BP
BT
Vodafone
National Grid Transco
Galliford Try
British American Tobacco
Royal Bank of Scotland
Scottish & Southern Energy


                                    - 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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