It's usually called either the Underground or the Tube.
It's OK to just call it the Underground but Londoners call it 'the tube'.
London Underground's nickname is 'the tube'.
it most commonly known as the tunnel or pu-ss-e
It's nickname is 'the tube' - which is what most Londoners call it.
The tube.
The tube.
The Tube.
The London underground system is usually referred to as 'the tube'.
You can get an underground train and an overground train from London Bridge.
Apply to London Underground Ltd.
Train.
by a underground train
Yes, the train spotters are allowed to freely train spot in various sports of the London Underground.
In Harry Potter and the Sorceror's Stone, Dumbledore claims to have a scar above his left knee that is a perfect map of the London Underground.
By underground (tube).
london
c2c
I think the bus. The 'tube' (underground railway) and bus.
By underground (tube) train.