It that Virgin Media Business had been selected to implement Wi-Fi in London underground stations ahead of the Olympic Games this summer.
The service will be available throughout the stations and on the platforms. Users will only lose connectivity when going through the tunnels, but will automatically reconnect as the tube pulls into the platform.
Throughout the Games the service will be made available for free to commuters, but will be chargeable after the ceremonies finish. It was originally intended that this would be made available as a pay-as-you-go service.
However, Computerworld UK has learned from a senior executive who is directly involved with the implementation that there are concerns in both camps about the commercial viability of the pay-as-you-go model.
He said that consumers aren't used to paying for internet as and when they need it, they typically pay for packages.
As a result, TfL and Virgin Media are looking into offering travel cards, which would be made available via the Oyster card top-up system, that include Wi-Fi as part of the cost.
For example, instead of paying £29.20 for a 7-day zone 1 and 2 travel card, commuters would have the choice to pay an extra set amount on top of the £29.20 to include Wi-Fi.
The details of when this service might be made available were not confirmed.
The Wi-Fi service will itself connect to the Virgin Media's fibre backhaul and will use the latest 802.11n Wi-Fi standard, meaning that passengers can expect to experience speeds comparable to those on a 4G network.
Computerworld UK contacted Transport for London for comment but it had not responded at time of publication.