Transport for London (TfL) has officially flicked the switch on the Virgin Media-run free Wi-Fi service which is set to offer free Wi-Fi access throughout the London 2012 Olympics over the summer.
BBC journalist Rory Clellan-Jones sent the first landmark tweet over the system, which marks the most significant step yet towards getting full mobile access up and running on the Tube.
With London counting down the days to the Olympics opening ceremony, which takes place on July 27, concern has been growing that London Mayor Boris Johnson's ambitious plan to have 80 Tube stations connected to the network by the start of the Olympics had fallen behind schedule, but London Underground's Gareth Powell says everything is still firmly on track.
“Bringing a next generation Wi-Fi service to one of the world's oldest underground transport networks is progressing as planned and the forthcoming service is testing well,” he said – though it has to be said that we wouldn't really know if it wasn't so we've got to take his word for it.
At this stage, only the stations themselves will offer Wi-Fi capabilities. The first wave of 80 stations will include the likes of Oxford Circus, Stratford, Liverpool Street, Leicester Square and King's Cross and will be switched on to full capacity in July.
The service will be free for all Underground passengers during the Olympics, but you'll have to pay after that, unless you're already a Virgin Media customer.
TfL reckons the service will have expanded to 120 stations, plus the first stretches of tunnel track, by the end of the year.