I think in this case it will aeronautical licencing that will be contracted out but....
The overall game plan of Ofcom seems to be based on the policy of profit these days. Most engineering staff have been made redundant or moved out.
What is most disturbing is their target for spectrum sales. So no particular band is truely 'safe'. Frequency allocations may be attributed internationally by the ITU WRC but you only have to look in the Radio Regulations to see all the 'footnotes' (ie where countries do NOT follow the ITU assignments).
I expect to see spectrum auctions in the near future (especially when they turn off your terrestrial TV transmitters). However, once the spectrum is sold, it is gone forever.
Possible scenario is that they could sell the aeronautical bands to a private company who would then issue UK licences for 'their' band and charge you some annual admin fee for using the frequencies.
As for the enforcement side of the old RA activities, well those days are gone. They dont have the manpower or the personnel anymore to do even the simplest of market surveillance. That will have to be contracted out too.
If Ofcom get it wrong it will be too late to start worrying.