Originally Posted by JAtko

The vast majority of UK airports that have commercial service will be controlled (i.e. staffed by an ATCO), even ones that are outside Controlled Airspace (e.g. Exeter, Newquay, Farnborough, Humberside). At Barra and Benbecula (as with lots of small airfields) they have a tower but the people inside aren't controllers, they're Flight Information Officers.