Licensed and Associate members

Abellio East Anglia Ltd
Abellio East Midlands Ltd
Abellio ScotRail Trains Limited
Arriva Rail London Ltd
C2C Trenitalia
Colas Rail Limited
DB Cargo Rail (UK) Ltd
Devon and Cornwall Railways Limited
Direct Rail Services Limited
Eurostar International Ltd
First Greater Western Ltd
First Hull Trains
First MTR South Western Trains Limited
First TransPennine Express Ltd
First Trenitalia West Coast Rail Limited
Freightliner Group Limited
Freightliner Heavy Haul Limited
GB Railfreight
Govia Gatwick Express
Govia Great Northern
Govia Southern & Gatwick Express
Govia Thameslink Railway
Grand Central Railway Company Limited
Hanson & Hall Rail Services Limited
Heathrow Express
KeolisAmey Docklands Limited
Locomotive Services (TOC) Limited
London North Eastern Railway Limited
London Underground Ltd
Merseyrail Electrics 2002 Limited
MTR Corporation (Crossrail) Limited
Network Rail Infrastructure Limited
North East Metro Operations Limited
North Yorkshire Moors Railway
Northern Trains Ltd Pre-Metro Operations
Rail Express Systems Limited
SE Trains Ltd
Serco Caledonian Sleepers Ltd
Serco Limited
SLC Operations Limited
South Yorkshire Supertram Ltd (Stagecoach Supertram)
The Chiltern Railway Company Limited
Transport for Wales Rail Ltd
Vintage Trains Limited
West Midlands Railway
XC Trains Ltd

Ashfield Consulting
Assertis 
Babcock 
Birmingham Centre for Railway Research and Education
Bombardier Incorporated
Bond Dickenson LLP
Brisk Projects Limited
British Transport Police Authority
Civil Enginering Contractors Association
Costain Group Plc
Derby and Derbyshire Rail Forum
Freight Transport Association Limited
Gesynto Consulting Limited
GHD
Internet Query Marketing Ltd
Jacobs UK Ltd
Optimum Rail 
Overhead Line Engineering Limited
Rail Freight (Users & Suppliers) Group
Rail Media Group Limited
Rail Vehicle Engineering Limited
Railnews Limited
Railway Industry Association Limited
Seymour-Powell Limited
Siemens Plc
Trainline Holdings Limited
Transport Design Consultancy
Transport for Greater Manchester Limited
Wabtec Rail Limited
Young Rail Professionals Limited