At time of posting, the Amberley Museum Vintage Car Show is scheduled for Sun 5 April.
https://www.amberleymuseum.co.uk/2020-eventsAmberley Museum, New Barn Road, Amberley, Near Arundel, West Sussex, BN18 9LT
From their website
Located in the heart of the South Downs National Park, our Museum is dedicated to preserving the industrial heritage of the South East. With 36 acres to explore and over 40 exhibits to visit, you can discover over 150 years of the South's working past in what was once a busy chalk quarry and lime works. Our team of knowledgeable volunteers ensures an engaging experience for visitors of all ages, come rain or shine. Events run throughout the year, with school holiday and half term activities for children