Wi-Fi is now available at more than 250 London Underground stations around the capital.
Transport for London (TfL) has extended the service to a further 100 stations on the network after seeing demand soar for the service: more than half a million devices connect to the Tube Wi-Fi network every day.
But despite its popularity, London Underground has said there are no immediate plans to install Wi-Fi in the tunnels.
TfL and Virgin Media began the rollout in 2012. Over the past 12 months, data usage has increased from 3TB a day to 20TB.
Steve Townsend, TfL’s chief information officer, said: “Wi-Fi is one of many ways we’re improving our customers’ journeys across the TfL network. We’re delighted that 250 Tube stations and Victoria Coach Station now have Wi-Fi.
“It will help more of our customers access live travel information, social media and internet browsing while they are on the move across the capital.”
A number of stations are still waiting to be wired up, including Dollis Hill, Eastcote, Gunnersbury, Hanger Lane and Putney Bridge.
Others still waiting to be connected include those linked with the Crossrail programme – like Tottenham Court Road and Bond Street – and Heathrow Terminal 5, which is owned by BAA.