Yes, sorry everyone, Perrenporth is only about a 20 minute drive from Newquay, as said Bodmin isn't that far either.
However none of the schools in Cornwall are particulary busy; therefore the school at Plymouth is much more likely to have vacancies for a part time instructor.
The other thing to consider Adverse, if you are unrestricted then the Culdrose flying club may be interested in your services on a part time basis.