Buckinghamshire Fire Service put on a Bike Down course which I found very useful and they recommended I come along to the New Rider course (also free of charge).
It was basically just a one on one ride with a guy who'd been riding for 40+ years. Despite being in his 60's he didn't hold back on his 1400 Kawi!!
It was basically an intro into riding with a club and getting into advanced riding techniques. They meet up 3 times a month and like the one you've come across was about £150. Think it was called Aylesbury Advanced Motorcyclists.
Also tempted to join just to learn a bit more