I did the ground school at Oxford and it was very good.
Although, I was trained by some of the guys who are now at Kemble and would say that, in my opinion, they would be an excellent choice to do your ground school.
Especially Steve Francis and Steve Tindle. Both are extremely good and the latter being highly entertaining as well . (Apart from the tight t-shirts he wears out in town - very 80's- no offence).
Good luck with it at Kemble Steve, Steve etc.
JTK