I’m in Tamworth, Staffordshire and would be up for a meet somewhere in the Midlands. Not sure where we could meet but the National Arboretum at Alrewas could be a consideration.
Also, what about The British Motor Museum, Gaydon? It's a bit of a drive south for most people but an easy route, being just off the M40. I can do it in about 1h 15m from Stafford.