Ashtead Technology Holdings PlcLSE: AT.

Change of Registered Office and Company Secretary

· Issued by Ashtead Technology Holdings Plc

31 July 2025

Ashtead Technology Holdings plc

("Ashtead Technology", the "Company" or the "Group")

Change of Registered Office and Company Secretary appointment

Ashtead Technology Holdings plc (AIM: AT.), a leading provider of subsea technology solutions to the global offshore energy sector, announces that it has changed its registered office address with immediate effect to:

c/o AMBA Company Secretarial Services Limited, 4th Floor, One Kingdom Street, Paddington Central, London W2 6BD.

The  Company is also pleased to announce the appointment of AMBA Secretaries Limited, as Company Secretary, with effect from 30 July 2025.

-Ends-

For further information, please contact:

Ashtead Technology

(Via DGA Group)

Allan Pirie, Chief Executive Officer

Ingrid Stewart, Chief Financial Officer

Colin Ross, Chief Strategy & Marketing Officer

Deutsche Bank AG (Nomad and Joint Broker)

Tel: +44 (0)20 7260 1000

Julian Cater

George Price

Kevin Cruickshank (QE)

Peel Hunt (Joint Broker)

Tel: +44 (0)20 7418 8900

Edward Allsopp

Charlotte Sutcliffe

Tom Graham

DGA Group (Financial PR)

Tel: +44 (0)7566 794 033

Jonathon Brill

ashteadtechnology@dgagroup.com

James Styles

Fern Duncan

Notes to editors:

Ashtead Technology is a leading subsea technology solutions provider to the global offshore energy sector. Ashtead Technology's specialist equipment, advanced-technologies and support services enable its customers to understand the subsea environment and manage offshore energy production infrastructure.

Ashtead Technology's offering is applicable across the lifecycle of offshore wind farms and offshore oil and gas infrastructure with over 85% of its equipment fungible across both markets.

Headquartered in the UK, Ashtead Technology operates globally, servicing customers from its facilities located in key offshore energy hubs. To learn more, please visit www.ashtead-technology.com