WX07 NWB This Mercedes truck is marked in British Transport Police livery. It is actually a re-liveried railway response vehicle. This truck carries equipment to Underground stations to fix urgent track problems. The report into the 7/7 Bombings suggested these vehicles were given blue lights to aid their passage in emergencies. This would have required a change in legislation, so this vehicle has been re-designated as a police vehicle and is driven by a police officer.
The same Mercedes Benz Atego truck is its previous livery, prior to February 2012. It is operated by Tubelines to provide an emergency response to incidents on the London Underground and is based at Camden.