GNER completed the approximately $6.5 millionon all 41 of its east coast trains last year, and although the service has been free for first-class passengers, those in standard (coach) are charged either $5.96 per half hour or $20.11 for a full day's use.
But in addition to faster journey times, National Express has also promised to extend free Wi-Fi to passengers in standard class as part of its seven-year contract.
The on-board Wi-Fi uses a combination of a satellite link and mobile 3G/GPRS networks to maintain 100 percent connectivity, even when going through tunnels.
A server from Swedish company Icomera on the train provides a 2MB satellite downlink, which is combined with the mobile connectivity. Wireless access points are then fitted at the end of each carriage on a train, which connect to the main onboard satellite server and can support about 40 simultaneous users in each carriage at a time.
National Express said it will also build a simpler "one-stop shop" Web site to highlight the cheapest tickets available, introduce smart cards by 2010, provide real-time travel updates to mobile phones, and allow passengers to print tickets at home or use "m-tickets" through their mobile phones.
Andy McCue of Silicon.com reported from London.