Fee Arrangements

JANUS HENDERSON FUND MANAGEMENT UK LIMITED

HENDERSON HIGH INCOME TRUST PLC

LEGAL ENTITY IDENTIFIER 213800OEXAGFSF7Y6G11

25 March 2026

HENDERSON HIGH INCOME TRUST PLC

FEE ARRANGEMENTS

The Board has agreed the following changes to the Management Agreement with effect from 1 January 2026:

· the fee scale will be an amount equal to 0.45% of Adjusted Net Assets payable quarterly, based on the level of Adjusted Net Assets at the relevant quarter end (previously 0.45% of average adjusted gross assets per annum).

All other terms remain the same.

For further information please contact:

Dan HoweHead of Investment TrustsJanus Henderson InvestorsTelephone: 020 7818 1818

Harriet Hall

PR Director, Investment Trusts

Janus Henderson Investors

Telephone: 020 7818 2919