https://www.ofcom.org.uk/manage-your-li ... rage-trial
The trial will test whether the use of limited coverage FM spectrum – at low power and over a short range of up to around 1 km radius – is a viable way of making more spectrum available for the licensing of restricted radio services in the future. We expect it to be particularly suitable for providing radio services to defined establishments such as hospitals or army barracks.
Ofcom is looking to issue 10 of these trial licences, each for a term of 12 months.