Construction of railways and underground railways
- GAJ TRAINING LIMITED
- HJS SIGNALLING LTD
- OSSY D AND R SERVICES LTD
- SHERUS PAPA LTD
- CKLL LTD
- SM RAIL LTD
- STRIM TECH LTD
- CAIDEN CONSTRUCTION LTD
- BDPL CIVILS LIMITED
- A&A PRIME LTD
- MILLSEY ELECTRICAL LTD
- MANNTRAXX LTD
- AAN ENGINEERING LTD
- VTR ENGINEERING LTD
- TRACKSURE TRAINING LTD
- SUBSTRUX ENGINEERING LTD
- JBOWENRAIL LTD
- JL EQUIPMENT LTD
- ECO STUDIES LTD
- RM RAILWAY LTD
- Construction of railways and underground railways in Accrington
- Construction of railways and underground railways in Alexandria
- Construction of railways and underground railways in Beckenham
- Construction of railways and underground railways in Doncaster
- Construction of railways and underground railways in Dumbarton
- Construction of railways and underground railways in Ebbw Vale
- Construction of railways and underground railways in Ilminster
- Construction of railways and underground railways in Leighton Buzzard
- Construction of railways and underground railways in Middlesbrough
- Construction of railways and underground railways in Portsmouth
- Construction of railways and underground railways in South Croydon
- Construction of railways and underground railways in Southport
- Construction of railways and underground railways in Tredegar
- Construction of railways and underground railways in Wakefield
- Construction of railways and underground railways in Wellingborough
- Construction of railways and underground railways in Whitstable
- Construction of railways and underground railways in Widnes
- Construction of railways and underground railways in Wimborne
- Construction of railways and underground railways in Wolverhampton
- Construction of railways and underground railways in London
- Construction of railways and underground railways in Birmingham
- Construction of railways and underground railways in Liverpool
- Building Finishing Services
- Carpenters & Joiners
- Commercial Building Contractors
- Construction of bridges and tunnels
- Construction of other civil engineering projects n.e.c.
- Construction of roads and motorways
- Construction of utility projects for electricity and telecommunications
- Construction of utility projects for fluids
- Construction of water projects
- Demolition
- Electricians
- Flooring Contractors
- Glaziers
- House Builders
- Other Construction Installation
- Other Specialist Construction Services
- Painters
- Plasterers
- Plumbers, Heating & Air Conditioning
- Property Developers
- Roofers
- Scaffolding
- Site preparation
- Test drilling and boring