Founded in 2014, ProxiSmart is researching and developing the potential of innovative beacon technology.

Its ParkingPerx loyalty app rewards users with free parking – encouraging consumer spending in city and town centres.

It also collects data on consumer journeys and city transport systems, and has sparked interest in Brazil and Spain.

See more of our 101 tech start-up disrupters here.

And check out our 101 rising stars of tech - the exciting firms which did not make the main list but have the potential to grow.