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Business Details
9 Years
experience
Rail Engineering Consultancy Services UK
Trevally Engineering is a specialist rolling stock consultancy established in 2017, dedicated to delivering tailored engineering solutions for the rail industry. Our expertise spans engineering change management, technical authoring, and fleet services, supporting train operators, ROSCOs, and suppliers across the UK. With over 15 years of combined experience, our team combines deep technical knowledge with a collaborative approach to enhance fleet safety, reliability, and cost efficiency.

We have successfully delivered projects for major fleets including Siemens Desiro-City, Bombardier Electrostar, and British Rail classes. Our commitment to practical, professional consultancy is evidenced by client testimonials highlighting our adherence to industry standards, problem-solving capabilities, and measurable improvements in fleet performance.
Services
Engineering Change Technical Authoring Fleet Services Obsolescence Solutions Maintenance Optimisation
Details
  • Year established: 2017
Highlights and features
  • We have over 15 years of rail industry engineering experience
  • Our team focuses exclusively on rail sector challenges and solutions
  • Proven track record with major UK train fleets since 2017
  • We combine technical expertise with collaborative problem-solving
  • Specialists in extending maintenance regimes without compromising safety
What people say
High standard Timely manner Extensive knowledge Through and reliable Measurable improvements
Services
Engineering Change
Our engineering change services manage modifications to rolling stock while maintaining safety and compliance. We conduct risk assessments, prepare documentation, and oversee implementation for fleet enhancements. Our approach ensures modifications meet regulatory standards while improving operational efficiency.
Technical Authoring
We create and amend maintenance documentation to ensure clarity and compliance with industry standards. Our services include writing modification instructions, user manuals, and recovery procedures. We prioritise clear communication to reduce human error during maintenance operations.
Fleet Services
Our fleet services optimise maintenance plans and resolve technical challenges across train fleets. We provide reliability studies, component lifecycle analysis, and overhaul support. Our solutions extend maintenance intervals while maintaining safety and operational performance.
People
Andrew Knowles
Principal Rolling Stock Engineer
MIET-qualified engineer with 15+ years' experience delivering rail fleet improvements. Specialises in engineering change management and technical authoring. Holds deep expertise in fleet modifications and obsolescence solutions across multiple train types.
Leah Megson-Gray
Marketing Manager
Marketing professional with decade-long experience in brand management and campaign delivery. Previously worked with major consumer brands. Focuses on developing strategic marketing initiatives and administrative support for engineering projects.
Questions
What rail engineering services do you specialise in?
We specialise in engineering change management, technical authoring, and fleet optimisation services for the rail industry.
Which train fleets have you worked with?
Our experience covers Siemens Desiro-City, Bombardier Electrostar/Turbostar, and multiple British Rail classes including 150, 365, and 442.
How do you ensure compliance with safety standards?
We follow RIS-2700-RST and ATOC/ACOP/EC/01006 standards while applying practical expertise to address human factors in implementation.
Can you help with obsolescence management?
Yes, we develop modern replacement solutions while ensuring regulatory compliance and operational compatibility across systems.
Do you provide technical documentation services?
We create and amend maintenance instructions, user manuals, and overhaul documentation to industry standards.