Portfolio Update

Henderson High Income Trust PLC
03 April 2007

HENDERSON HIGH INCOME TRUST PLC



HENDERSON GLOBAL INVESTORS



3 APRIL 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 31 March 2007.
There are no holdings with a value greater than 5% of gross assets.


Company
HSBC
BT
BP
Galliford Try
Scottish & Southern Energy
Royal Bank of Scotland
British American Tobacco
Old Mutual
National Grid Transco
Prodesse Investment Trust



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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