Their route took them through towns and villages including Reigate, Newdigate, Rusper, Ockley, Forest Green and Rowhook.

Organiser Rob Rennie, from Ashtead, was among more than 40 Caterham 7 owners and passengers who paid £10 each to raise ash for the Surrey Air Ambulance. He said: “We just like getting out in our cars and having a blat round the countryside and it’s been a huge amount of fun. We’ve also had the feelgood factor of chipping in some money to an extremely worthwhile cause. We never know when we may need it.”

During their visit to Dunsfold, the car owners were pictured proudly next to their cars in a horseshoe formation around the MD902 helicopter.

It costs £1.7m-a-year to keep the Surrey Air Ambulance airborne and each flying mission costs between £1,400 and £2,000.

Surrey County Fundraiser Julie Jenkinson said, “It’s been absolutely stunning to see all these amazing cars and to have them come here and fundraise on our behalf.”