I've just come back from the Stoke Mandeville site as I drove there to do a 'dummy run'. Yes, I'm a dummy.

It's really quite easy to find once you're off the main road. I'm considering making some signs up which will point those going on Saturday to the right location. These will just say BBS, or something as I don't want any local 'antis' to know its shooting related.
There'll only be about 4 or 5 of us going to start with, as we don't want to inconvenience the shooters who will be there, plus it only needs a recce to start with, anyway.

I have a map of the local area which Rosie very kindly emailed me, and this will also get emailed to those who're going Saturday.