Compliance with Market Abuse Regulation

To:       RNS

From:   CT UK High Income Trust PLC

Date:    1 April 2026

LEI:      213800B7D5D7RVZZPV45

Compliance with Market Abuse Regulation - Statement re. Inside Information

CT UK High Income Trust PLC (the "Company")

The Company announces that it is satisfied that all inside information which the Directors and the Company may have in the period leading up to the announcement of its results for the year ended 31 March 2026 has previously been, and will continue to be, notified via a regulatory information service and, therefore, dealings by the Company in its own securities are permitted.

The mandatory closed period under the Market Abuse Regulation will commence on 13 April 2026 and will last until the results for the year ended 31 March 2026 are published.

Name of contact and telephone number for enquiries:

Ian Ridge

For Columbia Threadneedle Investment Business Limited

Company Secretary

Telephone: 0131 573 8300