2026 Annual General Meeting & Trading Update

3 February 2026

Chesterfield Special Cylinders Holdings plc

(the "Company")

2026 Annual General Meeting & Trading Update

Chesterfield Special Cylinders Holdings plc (AIM: CSC) provides the following update ahead of its 2026 Annual General Meeting ("AGM") to be held today from 09:30 at the offices of Singer Capital Markets, 1 Bartholomew Lane, London, EC2N 2AX.

The Company's already robust defence orderbook was strengthened further in January with a strategically significant contract award from French prime contractor, Naval Group for specialised pressure vessels on its Scorpène-class submarine programme. Within the first half of 2026, the Company expects further overseas defence contract awards for newbuild programmes and Integrity Management services.

A major contract award for large-scale hydrogen storage systems under the long-awaited UK government's first Hydrogen Allocation Round (HAR1) is also expected in the first half of 2026, driving further growth from this emerging sector from FY27.

With significant revenue and earnings growth expected in FY26, underpinned by contract revenues weighted heavily towards the second half of the year, the Board reconfirms its confidence in the mid-term outlook and exciting prospects for the Company, as detailed in the FY25 full-year results announced on 18 December 2025.

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.