Virgin Media and London Underground engineers continue to test and prepare the forthcoming WiFi service, including recent capacity testing at Chancery Lane underground station where hundreds of devices were connected to the station's WiFi service at exactly the same time to reproduce the service experience of a busy Tube train arriving at the station2.

ENGADGET: Virgin Media names the first 80 tube stations to get WiFi hotspots

The underground station at Liverpool Lime Street has been closed for four months to allow refurbishment work to take place.

BBC: Liverpool Lime Street underground station

Artist Mark Wallinger has unveiled his labyrinth design for artworks to be displayed at every station on the London Underground.

BBC: Mark Wallinger unveils labyrinth Tube art