3 June 2026

Sutton Harbour Group plc

("Sutton Harbour" or the "Company")

Property Portfolio Valuation Update and Sale of Asset

In accordance with best practice to limit the number of consecutive years that an independent valuer is engaged, the Company  is pleased to have appointed Knight Frank LLP as its property valuer. The Company's independent annual property asset valuation has now been completed with an estimated portfolio value, as at 31 March 2026, of £45.720m (31 March 2025: £48.470m, excluding properties sold since 1 April 2025), representing a decrease of approximately 5.7% from the valuation as at 31 March 2025. These valuations exclude the former airport site.

The valuation  comprises owner-occupied operational property assets of £26.375m (31 March 2025: £31.825m), a decrease of 17%. This has been caused by a reduction to align with the valuation metrics for UK marinas, and does not reflect a deterioration in the condition of the Company's assets.  The Fisheries and Car Parking asset valuations, in aggregate, are also lower than the 31 March 2025 position.

The investment property and development property (excluding the former airport site) valuation has increased to £19.345m (31 March 2025: £16.645m, excluding properties valued at £2.675m which were sold  after 1 April 2025), representing a rise of 16%. This is substantially due to the impact of an uplift in the fixed ground rent in the lease of one of the Company's larger properties.

On 1 June 2026, the sale of North Quay House was completed with a sale price equal to the estimated valuation of £1.250m as at 31 March 2026. This disposal will permit further reduction of bank debt. The Company continues to progress interest in the disposal of other selected assets, as previously announced, in order to further reduce bank debt and to provide working capital.

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Notes to Editors

Sutton Harbour Group plc (SUH) is an AIM quoted company specialising in marine operations, waterfront regeneration and destination creation in Plymouth and Southwest England.

The Company operates Sutton Harbour Marina, King Point Marina and Plymouth Fisheries. Operational activities include mixed-use lettings, car parking and support services to harbour users, property management and regeneration and asset enhancement.

Sutton Harbour Group plc is committed to being the leading marine and waterfront regeneration specialist in Southern England, and to positioning Sutton Harbour in Plymouth as a destination of national interest.

This announcement contains inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) 596/2014 as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018, as amended ("MAR").