Late notice, but I've heard that tomorrow night there is a fairly large tunnel run going on along the A3, Hindhead Tunnel. It looks like a mixed marque event, run by a group called BOSS.
Seems like they've gained legitimate permission from the Guildford Spectrum to hold a static show/meet...
Just had a flyer from the Tony Purslow group (M-B Guildford, M-B Hindhead, M-B Basingstoke) which may be of interest to some.
If you buy roof bars for your M-B from them, you can borrow (free of charge, and as many times as you want):
roof boxes
luggage containers
ski carriers
snowboard...