Intensive PPL Groundschool
AlexEvans,
I believe Derek Davidson does this sort of thing.
I have never attended any of his courses or received flying training from him, so I can't tell you how good his courses are.
He is, however, a well known name and has been around in the business for years. So I imagine he must be well worth contacting.
He always advertises in the back of the flying magazines, usually under the slogan 'Here I am'.
Give him a call.
Broomstick.