London Overground

suburban rail network in Greater London and Hertfordshire

Silverlink was a train operating company in the United Kingdom owned by National Express that operated the North London Railways franchise from March 1997 until November 2007. At the end of 2007, Silverlink Metro services were taken over by London Overground and Silverlink County services were taken over by London Midland.

electric multiple unit in use on the London Overground

Directorate of Transport for London