Perranporth is full with a waiting list.
Newquay may have a space as an aircraft has just left there but there's a rumour (this is a rumour site after all) that it's a 6-month rolling contract and you might get evicted at any time (that's what's happened to the lovely museum there)
The plus with Newquay is the access to the ILS and landing fees included in the rent. Ask at Flynqy, they might have the present contact with Cornwall Council. They also have instructors/examiners available.
Another rumour is that Dunkesell is somewhere North of £8k pa for your size of aircraft. (Someone please tell me I'm wrong!)
TOO