Virgin has announced a partnership with EE and Vodafone to give all of their customers access to free wi-fi on the London Underground.

After its 2012 launch, another 20 stations will also be wi-fi enabled in December and 28 more will come online early next year. 72 stations already provide wi-fi.

The service will be available to Virgin Media broadband and mobile subscribers, along with Vodafone, Orange, T-Mobile and EE mobile customers – this represents around 76 per cent of people in Greater London – at no extra cost. The service already has 700,000 users and deliver 1m sessions every day.

Virgin Media will also launch a pay-as-you-go service in 2013, with daily, weekly and monthly passes starting from £2 per day.

Fibre connectivity to each station is being provided by Virgin Media and London Underground has installed on-platform access points to create a hotspot throughout the station. As with those stations that are already wi-fi enabled, users will be able to connect on platforms but it will not work on trains.

The 20 new stations are: Oval, Belsize Park, Holloway Road, Russell Square, Clapham Common, Balham, Chalk Farm, Camden Town, Bounds Green, Finsbury Park, Mornington Crescent, Highgate, Hampstead, Seven Sisters, Lancaster Gate, Swiss Cottage, South Kensington, Turnpike Lane, Notting Hill Gate, Wood Green.