chevvron:
I would suggest that to clear up any confusion, the airfield operator should change any mention of 'ATC' to read 'ATS', the reason being that AGCS is a type of Air Traffic Service along with ATC and FIS.
The UK adopts the ICAO definition of ATS and does
not include AGCS as an Air Traffic Service. The operator should use precise terminology and not this regrettable slang.
2 s