For the tube lines new cars (1949 Stock) were built to run with the 1938 stock.

They failed and in January 2003 three separate private companies took control of maintaining various tube lines.

This prevents it from running on other deep-level tube lines.

As soon as the tube lines up with the pirate, fire.

It is enclosed by two tube lines, to the west and to the south.

For most of its length it is a deep-level tube line.

I mean, this was still virgin territory, there were no tube lines running to this part of the frontier.

The ticket hall for the three tube lines was reopened in stages over a period of four weeks.

The image on the screen is formed by a beam of electrons that sweeps across the tube one line at a time.

The tube lines do not, of course, lie at right angles to one another like the streets of Manhattan.