Net Asset Value(s)

Henderson High Income Trust PLC
25 July 2005

HENDERSON GLOBAL INVESTORS

25 JULY 2005



HENDERSON HIGH INCOME TRUST PLC

As at close of business on 22 July 2005, the unaudited net asset values
calculated in accordance with the AITC formula (excluding current financial year
revenue items) were 137.2p per ordinary share and 210.9p per unit.



For further information, please call:

John Hilton, Investment Trust Accounting Department

BNP Paribas Fund Services UK Limited

Tel: [phone]



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