We went to this last year and found every conceivable piece of land at Brooklands had a classic car parked on it :)
Brooklands Museum New Year's Day Gathering
Friday, January 1, 2016
Brooklands Museum - EventsAll classic, vintage, veteran and super cars, motorcycles and commercial vehicles are welcome for the largest New Year’s Day Classic Gathering in the UK. This includes any vehicle more than 30 years old (or an example of a model that went into production before 1985).
I would say they would let Gen 1's and 2's in OK
http://www.brooklandsmuseum.com/index.php?/events/details/new-years-day/