It's too early to ask for help but if someone's interested feel free to post suggestions and information.
Club Residence Years of operation Main venues 500 Club Bristol, London 1947 - 1950 Aberdeen & DMC Aston Martin OC Bentley Drivers Club Berkhamsyead & District M.C.C. Birmingham Motor Club Blackburn Welfare MSC Blackburn Welfare & LCC Brighton & Hove Motor Club Bristol Motor Cycle & Light Car Club Bristol - 1946 British Racing and Sports Car Club Brands Hatch 1954 - present British ARC British Racing Drivers Club Bugatti Owners Club Cornwall MRA Covendish Auto Club Darlington & DMC Derby & District Motor Club Donington Eastern Counties MC Half Litre Car Club London 1950 - 1954 Brands Hatch Irish Motor Racing Club Junior Car Club Leinster AC Leinster MC Light Car Club Maidstone & Mid-Kent Motor Club M.G. Car Club Abingdon Mid-Cheshire MC Midland Automobile Club Shelsley Walsh Midlands Motoring Enthusiasts Club Motor Cycling Club North Staffs MC Nottingham SCC Peterborough MC Royal Automobile Club Scottish Sporting CC Sheffield & HMC SUNBAC Vintage Cars Club Vintage Sports Car Club Welsh MRC West Essex CC West Hants & Dorset CC Winfield Joint Committee Yorkshire SCC York SCC