You'll struggle to find Shobden as it's spelt Shobdon. There have been some issues with the volume of dissimilar circuit traffic (or sumfink like that) but I'm sure that's been sorted.
I'd go and check a few of these out. If you were prepared to schlep all the way to north London then any of the above are just round the corner. I'm sure you're aware that it's the ambiance, the fleet, the instructors and fellow club members that are all important parts of the decision making process.
Good luck anyway.
SGC