Safetycom was supposed to be similar to Unicom in the USA. It's communication for airfields without a dedicated frequency.
Then some idiot decided to rule that it was only air to air and must not be used by anyone on the ground. Yes it is just the same idea as the microlight frequency.
If you want a frequency used from the ground Ofcom want a wad of cash from you and you must be licenced to use it. It's a shambles which has more than a little to do with empire building and money.
D.O.