Caledonia Investments plc

Share sub-division and total voting rights

Further to the announcement on 16 July 2025 and in advance of the sub-division of its ordinary shares on a ten for one basis (the "Share Sub-division") which will take effect from 25 July 2025, Caledonia Investments plc ("Caledonia") notifies the market that Caledonia's current issued share capital includes 52,635,326 ordinary shares of 5p each ("Existing Ordinary Shares") with voting rights. No Existing Ordinary Shares are held in treasury.

On this basis and in accordance with Rule 5.6.1 of the Financial Conduct Authority's Disclosure Guidance and Transparency Rules (the "DTRs"), following the completion of the Share Sub-division, Caledonia will have 526,353,260 ordinary shares of 0.5p each ("New Ordinary Shares") with voting rights. No New Ordinary Shares will be held in treasury.

The New Ordinary shares will have a new ISIN and SEDOL, as follows:

ISIN: GB00BTNQ8K38

SEDOL: BTNQ8K3

It is expected that the Share Sub-division will become effective and that dealings in the New Ordinary Shares will commence at 8.00am on 25 July 2025 (the "Effective Time"). The last day of dealing in the Existing Ordinary Shares will be today, 24 July 2025, with the record date for the Share Sub-division being 6.00pm today (24 July 2025). CREST accounts are expected to be credited with New Ordinary Shares on 25 July 2025 and share certificates in respect of the New Ordinary Shares are expected to be dispatched, at risk of shareholders, by 8 August 2025.

From the Effective Time, the above figure of 526,353,260 New Ordinary Shares may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interests in, or changes to their interests in, Caledonia under the DTRs.

Enquiries:

Richard Webster

Company Secretary

Caledonia Investments plc

Tel: +44 (0)20 7802 8080

24 July 2025

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