Trevally Engineering Ltd
Specialists in Engineering Change & Technical Authoring
PERSONAL, FLEXIBLE APPROACH
Why Trevally?
Trevally Engineering provides specialist rolling stock consultancy that combines deep technical expertise with a flexible, cost-effective approach. We focus solely on the rail industry, giving clients access to proven experience without the large overheads.
We work with train operators, ROSCOs, maintainers, and suppliers to deliver engineering solutions that improve fleet safety, reliability, and cost efficiency. Our services cover engineering change, maintenance optimisation, obsolescence management, technical authoring, reliability engineering, and supplier support.
By combining strong technical knowledge with a collaborative approach, Trevally helps clients overcome complex challenges and achieve measurable improvements in fleet performance.
Since 2017, Trevally Engineering has successfully delivered projects across a wide range of EMU and DMU fleets, including Siemens Desiro-City, Bombardier Electrostar and Turbostar, and multiple British Rail fleets such as 150, 156, 313, 365, 442, 455, 507 and 508.
Our track record includes extending maintenance regimes without compromising safety or reliability, resolving obsolescence challenges with modern, approved alternatives, delivering engineering change programmes, and supporting suppliers in bringing innovative technologies into the UK market.
Trevally Engineering’s focus is always on providing practical, professional consultancy that adds lasting value. We ensure fleets remain safe, reliable, and cost-effective throughout their service life.
Clients
Project Collaborators
TESTIMONIALS
“Andrew has completed many work streams for GTR and has always delivered them to a high standard and in a timely manner. He has an extensive knowledge of the legislation, standards and processes that govern safe and reliable rolling stock operation.
Andrew is able to work with a range of stakeholders and undertake change work across electrical, mechanical, maintenance and overhaul work streams."
Rob Crocker CEng - Fleet Engineer - Govia Thameslink Railway
“Andrew undertook a number of rail vehicle maintenance tasks for me when I was a Fleet Engineer for Govia Thameslink Railway (GTR). I always found Andrew’s work to be through and reliable and as such he was requested to do other work for GTR based on the quality of the work performed."
Tony Francis CEng - Fleet Engineer - Govia Thameslink Railway
“During his time with us, Andrew continued to meet and exceed the expectations of our clients. Andrew was an important member of the Engineering team at DB ESG and was a credit to the organisation with regard to the standards he set both technically and professionally."
Nick Goodhand CEng - Managing Director - DB ESG