Professional services
- A & J Electrical Services Ltd
- Balneaves Chadwick Associates
- Comply Serve Ltd
- Composite Creations
- Firstco
- Glide (UK) Ltd
- Hoare Lea
- Hobarn Business SVC-Certified Chartered Accountan
- N D Oliver & Co Ltd
- Prospectus Corporate Ltd
- R.W.B. Group Ltd
- Railway Management Services
- ReRail Consultants Ltd
- RNA Recruitment Ltd
- RTG Rail Services Ltd
- Stobart Rail
- Templeman Associates Ltd
- The QSS Group
- Total Access
- WorleyParsons
Sub-Categories:
- Abseiling Specialists
- Acoustic Engineers
- Architects
- Building Surveyors
- Civil Engineering Consultants
- Construction Management Specialists
- Diving Specialists
- Electrical Building Services Engineers - Consultan
- Electrical Engineering Consultants
- Energy Conservation Consultants
- Environmental
- Mechanical Engineering
- Permanent Way
- Quality
- Safety
- Site Management