The London underground system is usually referred to as 'the tube'.
Tube in London, subway in the States.
It's a small passage
London Underground to King's Cross then train to Peterborough.
London, UK in 1863
There is no direct train between Heathrow and Southampton. You will either have to take the tube (underground) to Waterloo and get a train from there or take a bus to Reading and get a train to Southampton from there.
About fifteen pounds. You could take the metro which is a local overland/underground train service would cost around three pounds.
The London Underground, usually referred to as just 'the underground' or 'the tube'.
The busiest train station in the UK is London Waterloo.
Apply to a train company
underground
They do it out of courtesy for oncoming engineers as bright lights in the face can cause temporary inadequate vision. This happens on railroads all over the UK and in the USA
by ferry, areoplane, train.
By train from the continent By train from almost any other area of the UK By air into the London Airports By underground from the city limits by car from anywhere etc etc etc