Wouldn't this be sensible??? Can't see it being approved by the CAA then.
This had been discussed recently but i'm not sure if there was a thread on it. Try looking in Flying Instructors and Examiners. I wanted to operate a single R22 (instruction for ppl only) out of a gliding site a couple of years ago and heard this was being discussed. Unfortunately, nothing came of it at the time and I abandoned the idea as I felt operating out of a main airport was prohibitively expensive. Landing fees, hangarage etc.
The gliding site had fuel, safety guys there during gliding days. Hangars. But no landing fees. Would have been great but not deemed safe enough by the powers that be as it wasn't licensed. Safe enough for glider towing though.