rmcb, in some cases, neither.
I am aware of a person turning up, out of the blue, at a school recently wanting a wet hire of an aircraft in order to do a skills test.
He had made a cash deal with an examiner, (well respected local guy, known to the school) to do his test with.
The guy was a complete stranger to the school staff, but as the examiner was signing for the a/c, they were, quite rightly, happy to allow it.