Virgin Media has signed up the phone company as a wholesale partner for its WiFi on London Underground service, enabling O2 customers’ access to free London Underground WiFi from June.

O2 joins EE and Vodafone as a wholesale partner for Virgin Media’s WiFi service. Customers on the Three network are still locked out of a free service and have to shell out £2 a day for the same access.

As part of the deal, all existing O2 customers signed up to O2 WiFi will be automatically registered for free WiFi on the Underground, taking away the need to sign up above ground or remembering a password.

Gareth Powell from the London Underground, said: “Having O2 on board is excellent news for the thousands of people that use the Tube every day. Most customers will now be able to access live travel information or use social media to plan their social life while on the move.

“WiFi on the Tube is part of how we are improving services for our customers. 2013 is London Underground’s 150th anniversary; we were at the forefront of technology when the first Underground train ran and this shows how we are maintaining that tradition, using modern technology to improve customers’ journeys.”

Virgin Media also confirmed another 12 London Underground stations are coming online this week including Bank, Baker Street and Earl’s Court.

This brings the total number of WiFi enabled stations to 120, meeting Virgin Media’s and TfL’s target of 120 London Underground stations online.