National Storage Mechanism | Additional information

To: RNS

Date: 31 October 2025

From: CT UK High Income Trust PLC

LEI: 213800B7D5D7RVZZPV45

TRANSACTION IN OWN SHARES

The Board of CT UK High Income Trust PLC announces that on 31 October 2025 the Company purchased 125,000 B shares at a price of 95.75p per B share to be held in treasury.

Following this transaction the Company's issued share capital consists of 102,067,144 Ordinary shares and 32,076,703 B shares, of which 16,494,491 Ordinary shares and 1,742,953 B shares are held in treasury. Therefore the total number of shares with voting rights in CT UK High Income Trust PLC is 85,572,653 Ordinary shares and 30,333,750 B shares.

The above figures ( 85,572,653 Ordinary shares and 30,333,750 B shares) may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, CT UK High Income Trust PLC under the FCA's Disclosure Guidance and Transparency Rules.

For further information please contact:

David Moss,

Columbia Threadneedle Investment Business Limited, Manager 0207 628 8000

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