David Walsh


David joined Tremorfa 16 years ago and has worked across various functions and roles during that time.

David empowers our team to drive the company's growth by fostering a culture of innovation and collaboration through decisive leadership.

Head of Mechanical & Electrical

Daniel Williams

Dan has worked at Tremorfa for 8 years, having started as an Apprentice he now has over 16 years experience in our industry.

As head of department, and with the support of his experienced team, Dan is responsible for the successful delivery of all Mechanical and Electrical projects. From Design through to completion he ensures high-quality and efficient solutions for our clients.

Head of Fire & Security

Lewis Bailey

Lewis joined Tremorfa in 2021 as a surveyor with 16 years experience installing Fire, Security and automation systems. He started his career in the industry as an apprentice and progressing to Surveyor and is now head of our Fire and Security department.

Lewis is responsible for a team of 19 engineers and office staff and from design through to aftercare services, he leverages his expertise in delivering fire safety and security solutions to safeguard our clients' assets and ensure their protection.

National Accounts Contract Manager

Chris Hillman

Chris has worked for Tremorfa or 14 years and has considerable experience in Project Management, Electronic and Physical Security systems and Electrical Data.

As National Accounts Contract Manager, Chris has responsibility for the services we deliver to one of our largest clients, Virgin Media O2. His vast experience in this field has not built strong client and contractor relationships but also ensures the successful delivery of all our client projects, which are a testament to his skills and dedication.

Senior Gate Automation Engineer

Jason Lee

Jason joined Tremorfa in 1999 as a trainee electrician supporting numerous automated security system projects. Jason gained extensive experience and knowledge in this field and has worked as a Senior Gate Automation Engineer for several years.

With over 25 years experience Jason is a highly respected engineer. Whilst leading in the design, installation and maintenance of new systems, Jason provides invaluable guidance to our team of engineers who deliver planned and reactive services to our customers for an extensive range of automated doors, roller shutters and barrier installations.

National Accounts Contract Manager

Alex Furness

Alex has worked for Tremorfa since 2014 and has over 15 years contract management experience in the Electrical Contracting and Fire and Security industry.

As National Accounts Manager Alex has responsibility for a number of National clients in the Police, Corporate and Retail sectors. He is adept in building and maintaining relationships with key clients. He is accredited with a number of Health, Safety and Environment and International Organisation Standards which enable him to add value across numerous compliance areas of our business.

Service and Maintenance Engineer

Gareth Donovan


Gareth joined Tremorfa in 2015 as a Fire & Security Engineer working for our Service and Maintenance department.

As a multi skilled and highly experienced engineer, Gareth works with a team of engineers and office based professionals providing planned preventative maintenance and 24/7 emergency reactive services to our clients. Gareth's commitment to excellent customer service ensures he consistently adds value to our client contracts.

Senior Service and Maintenance Engineer

Ashley Jenkins

Ashley joined Tremorfa in 2015 having gained extensive engineering experience in the Royal Navy. Ashley started as a Fire & Security engineer and now, as a multi skilled, Senior Service and Maintenance Engineer, he leads a team delivering planned and reactive services across Mid and West Wales.

Working as part of our Service and Maintenance team Ashley co-ordinates and ensures out of hours emergency cover for all regional clients is available and applies his skills and experience to support the wider team with services delivered across all of our client contracts.