About Us

Our History

Tony Ridley Hyperbaric Associates Limited was formed as a specialist hyperbaric tunnelling company in 1997 after the founders involvement with UK Tunnelling Projects from 1993; which followed an earlier career path through the emerging offshore diving industry in the 1980’s and the hyperbaric medical facility of the North Sea Medical Centre.

The companies formation closely followed the introduction of new “Compressed Air” Regulations in 1996 which helped to define its operational standards and continuing development and since that time, the company has supported the further development of hyperbaric tunnelling standards both within the UK and Internationally.

From around 2010, changes in tunnelling technology and methodology started to change the format and scope of the support services required to keep the business viable and as a result of this the company began to diversify into supporting tunnelling safety and health whilst retaining its core specialist hyperbaric expertise.

This diversification is continuing with the company now offering a formalised range of additional Tunnelling and TBM supports alongside or standalone from its core hyperbaric packages.

Now more simply known as T.R.H.A. Ltd, the company has a dynamic team of key personnel with an ethos to improve standards, whilst developing and expanding its tunnelling services further into the 21st Century.

Meet the core team

At Tony Ridley Hyperbaric Associates Limited, we have a highly experienced and dedicated team, ready to help you.
Ryan Hogg

Ryan Hogg

Operations Director

Tony Ridley

Tony Ridley

Managing Director

Alex Buckenham

Alex Buckenham

Accounts Director

Andrew Colvin

Andrew Colvin

Company Doctor Occupational Health Physician / Contract Medical Advisor / Appointed Doctor

Dr John Colvin

Dr John Colvin

Occupational Health Physician / Appointed Doctor

Natalie Stephenson

Natalie Stephenson

Project Lead / MLA / Health Technician

Martin Fergusson

Martin Fergusson

Project MLA / Health Technician

Tom Hammond

Tom Hammond

Training Manager & Lead Instructor

Tom Garratt

Tom Garratt

Project MLA / Health Technician

Mal Thomson

Mal Thomson

Project Lead / MLA / Health Technician

Jason Hutchison

Jason Hutchison

Project Lead / MLA / Health Technician

Connor Brooks

Connor Brooks

Project MLA / Health Technician

Outside of work, TRHA has a keen interest in all sport and the benefits it can bring.  In line with this, TRHA supports and sponsors North Walsham Vikings Rugby Club

Our Projects

Take a look at a few of the projects we’ve worked on over the past year.

Specialist Tunnelling Services

 

Our team are passionate about delivering the best possible outcome for our clients and we use our expertise to make sure that your tunnelling requirements are met in a safe, cost-effective and timely manner. We strive to be a total service provider offering specialist solutions from design through execution and implementation to ongoing maintenance. Other specialist services we provide include project design, occupational safety and health services, pre-tender & tender advice, free air intervention, refuge chamber supports & TBM training. We have clients UK and worldwide, so get in touch today to find out how we can help run your tunnelling project. Other services include: advice on airlock system design, assistance to attain high pressure exemption or approval, legislative advice based on need & best practice, construction under compressed air, training of client personnel, audit, appraisal & commissioning of TBM airlock systems, emergency, rescue & extrication systems & environmental control & client liaison.