The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the UK version of the EU Market Abuse Regulation (2014/596) which is part of UK law by virtue of the European Union (Withdrawal) Act 2018, ("MAR"), and is disclosed in accordance with the Company's obligations under Article 17 of MAR. Upon the publication of this announcement via a Regulatory Information Service, this inside information will be considered to be in the public domain.

21 October 2025

Chesterfield Special Cylinders Holdings plc

(the "Company")

Trading Update & Notice of FY25 Results

Chesterfield Special Cylinders Holdings plc (AIM: CSC) is pleased to provide a trading update for the 52 weeks to 27 September 2025 ("FY25").

The Company expects to report FY25 full-year adjusted EBITDA^* ahead of market expectations at approximately £0.8m (FY24: adj. EBITDA loss of £0.9m) on revenue of approximately £16.5m (FY24: £14.8m) and a closing net cash^** position of £2.1m (FY24: net borrowings of £0.9m).

Strong growth from overseas defence contracts secured in the first half of the year offset lower revenue from UK naval new build contracts nearing completion, with record full-year revenue performances from UK naval Integrity Management deployments and hydrogen contracts.

A robust defence order book and significant opportunities in the UK hydrogen market, where the Company is actively engaged with key developers regarding new build contracts for hydrogen storage and transport systems, underpin a positive outlook for further earnings growth in FY26.

The Company expects to release its FY25 preliminary results on Thursday 18 December.

*       Adjusted EBITDA is earnings before interest, tax, depreciation, amortisation and other exceptional costs

**   Net cash / borrowing is calculated as total borrowings less cash and cash equivalents, and excludes asset finance leases and right of use asset leases

Additional Information

The person responsible for arranging release of this announcement on behalf of the Company is Chris Walters, Chief Executive.

For further information, please contact:

COMPANY DESCRIPTION

www.csc-holdings.com and www.chesterfieldcylinders.com

Chesterfield Special Cylinders is a world-leading designer and manufacturer of high-pressure gas storage and transportation systems, used principally in safety-critical defence and hydrogen energy applications, and provides inspection, testing and recertification services throughout the system lifecycle.