Serco-NedRailways companies
Merseyrail
Northern Rail

Serco
Docklands Light Railway
Manchester Metrolink
Serco Group

NedRailways
NedRailways
NS Dutch Railways

National and regional government agencies
Department for Transport
Passenger Transport Executive Group
Scottish Executive
Strategic Rail Authority
Transport for London

British rail industry
Association of Community Rail Partnerships
Association of Train Operating Companies
Network Rail
Railway Forum
Railway Industry Association