Tube to become mobile call zone

Tube passengers could soon be using mobile phones on Underground platforms under plans revealed by Ken Livingstone today.

London Underground is seeking a technology company to install aerials on deep-level stations, allowing mobiles to work.

This could be extended later to Tube carriages, which the Mayor said could improve passenger safety, allowing police to be alerted to a problem.

The scheme's primary aim is to improve information about delays or station closures.

Passengers would be sent up-to-the-minute text messages or emails warning of problems or late trains.

The scheme would also include a "wireless" network allowing passengers to go online with laptops.

LU hopes to begin a trial at a main station next year and to roll out the technology across 270 stations by