East Midlands Trains has officially launched in-carriage wireless broadband on six of its services.
The rail carrier is offering passengers travelling from London to Sheffield and London to Nottingham the opportunity to hook up to the internet.
Over the next few months, the firm – which has worked alongside UK Nomad on the project – will roll the service out across its fleet of Meridian units.
First-class passengers are entitled to use the service for free, however, all other customers will be charged for access to 3G services.
Jayne Moyses, Sales Manager for East Midlands Trains, said: "We're constantly looking at how we can further improve our service and we know the launch of on-board internet access will make a real difference for our passengers."
Last month, the Independent's Kate Simon criticised the pay-as-you-go aspect of the project, saying the rail company should make broadband services available to all customers for free.