Transport officials in London are in talks to bring mobile coverage to the Tube network, as a project to update police communications underground gets under way.

The discussions are in their early stages but it is understood that the Government is keen for technology to be deployed that will allow commuters to make calls on platforms and in more than 100 miles of tunnels once mobile operators are linked to the system.

Transport for London (TfL), the body responsible for the capital’s transport network, is in talks with several providers to build the necessary infrastructure.