London Underground is known by Londoners as 'the tube'.
London Underground was created in 1863.
subterranean
Apply to London Underground Ltd.
The London Underground is the largest in Europe and the oldest in the world.
Crypt.
Crypt.
aquifer
In London Underground (tube) stations.
The London Underground did give the East London line to the London Overground to ease its traffic.
The London Underground. Travel For London (TFL) is responsible for the London Underground and the other transport networks in London.
The track difference of the track layout of the London Underground and London Overground is whereas one is underground the other is over the ground.