As Ade says, ER 5421 is now in Italy. It was pretty tired when Arnold Livingstone had it and even tireder after The Devil Rides Out, but it had a distinguished history. It was built up by Alec Park who was a partner of Terry Breen in his car breaking and dealing business in North London, using a fifth shell with the scuttle extended, the rear suspension lowered and an eight series engine fitted. Here is a picture of the car with a proud Alec taken, judging by the cowled lamp, sometime during the war. The car was later owned by Wells Coates and here is the famous picture of him with the car that appeared in Vogue.
John