West Sussex-based MarineTrack is a marine telematics business. It services the commercial and recreational marine markets. It generates revenues from sales of hardware and the airtime needed to transmit the information. The latter is recurring income that should build up over time. The business was started in 1998 but only really became a proper commercial operation the past couple of years. The company started out as shell company Sports & Leisure Group, which acquired a stake in Frank Warren's boxing promotions business Sports Network and then bought the rest of the business in August 2004. It changed its name to Sports Network at that time but the Sports Network business was sold back to Frank Warren in May 2007. Marine Track then reversed into the renamed XSN in July 2008.