Clients

Alstom
Institution of Railway Signal Engineers
Arriva
Jacobs Engineering
Bombardier
London Midland
Carillion
Marathon Oil UK
Channel Tunnel Rail Link
Metronet Rail
Chiltern Railways
NATS
Department for Transport
Network Rail 
Docklands Light Railway Ltd
Northern Rail
Driving Standards Agency
QCA
EUROCONTROL
Rail Safety & Standards Board
Foreign & Commonwealth Office
Serco
Galliford Try
Southeastern
GNER
Strategic Rail Authority
GrantRail Group
Thales
Hammonds Solicitors
Transco
HMRI
Transport for London
HSE
West Midlands Fire Service