great partnerships
Our Clients



















































































"Putting trust in a contractor to deliver a project on time and budget is a big thing. Trefoil kept everything on track and absorbed unforeseen extra work. Their attitude was always good, working with professionalism and to a high standard. I look forward to working with them again."
Mark Smethurst
Operations Manager, All Nations Church
"Having worked with Trefoil on a medical device manufacturing plant refit, I would have no hesitation in awarding them another contract. High quality workmanship at competitive prices, delivered with professionalism and speed of response; a joy to work with."
John Clement BSc MIET FInstLM
Director, Enterprise Professional Services
"Trefoil have successfully completed a number of contracts with ourselves. We have found their quality of work to be of a very high standard with consistent quality across their trades."
Joe McLaughlin
Contracts Manager, Wernick Buildings
"Can I take the opportunity to thank you and your colleagues for the amazing work on the SMTL IP-5 build. I didn't think it would be possible to complete the build in the allocated timescales but the professionalism of Trefoil and the standard of work was exemplary."
Dr Gavin Hughes
Acting Director, NHS Wales (SMTL)
"Just wanted to say a huge thanks for the refurb at Rhos House – the screening lead came over this PM and was thrilled to the point she was quite emotional. She was thrilled with the transformation. Well done and a big thanks to your guys from Public Health Wales."
Neil Desmond
Public Health Wales
Mark Smethurst
Operations Manager, All Nations Church
John Clement BSc MIET FInstLM
Director, Enterprise Professional Services
Joe McLaughlin
Contracts Manager, Wernick Buildings
Dr Gavin Hughes
Acting Director, NHS Wales (SMTL)
Neil Desmond
Public Health Wales