It wasn't a 'Piston Provost', it was a (Percival) Provost T Mk1. The 'piston' bit only crept in after the constant-power-variable-noise machine arrived.
Removes pedant hat
And as far as I can remember from a six-week stint at Spitalgate while the Barkston Heath runway was resurfaced, there weren't any trees on the approach.
At the time, Spitalgate was the WRAF basic trg school, or somesuch, and a lot of flight cadets were to be seen hanging around in those rather strange ill-fitting grey flying suits we had, ready to answer, in a very cool way, "Why, yes, I'm a pilot, how did you know?"