More than 60% of JT’s revenues now come from outside of Jersey, with its wholesale, and machine-to-machine (M2M) businesses performing particularly well in 2015.

The M2M businesses use JT SIM cards to allow machines to share information, and around the world there were more than 800,000 devices connected to the JT platform by the end of the year.

The company won a contract last year to supply SIM cards connecting heart-rate monitors in patients to special monitoring equipment for a company called m-health in Canada, providing a real-time information feed which has the potential to save lives.

JT is also growing through international partnerships with major corporations like BT, providing fully-managed Avaya voice services to BT for 25,000 Kimberly Clark users across 17 countries in Europe, the Middle East, Africa and North America.

JT Chief Executive Officer Graeme Millar said: “JT is a complex business, operating in an intensely competitive, regulated market, so I’m very proud that my team has delivered such a successful year. We have work still to do to build the JT brand outside of the Channel Islands; however, 2015 was a year when we took very significant steps forward on the international stage. That growth is vital for JT.

“Closer to home we have now pushed Jersey up to third place in the world in terms of its fibre-optic broadband connectivity, as well as delivering an extensive 4G network. We will continue to construct and maintain those networks to enable local residents and businesses to remain connected, whether socially or at work."

The company also put in a 38km fibre-optic network in Guernsey last year, connecting 42 government sites, including schools and the hospital, and have invested over £7m to lay 50 km of fibre-optic cabling in and around St Peter Port.

“We will be using that successful performance to continue to grow the business, which is vital for JT’s future; more than 60% of our business now comes from outside of Jersey, which enables us to fund substantial programs and invest in our local networks, such as in the Gigabit Isles programme and 4G.

“It was also the year in which our own surveys - and those of CICRA - suggested that we were doing much better in terms of satisfying our customers, which is perhaps the most important measure of a successful business.”

Last year, JT signed up their 1,000,000th customer in Jersey.