I have the background from the horse's mouth so to speak.
The car is built on a ladder type chassis with tubular reinforcement hoops front and rear. The body is totally aluminium, over an ash frame where required. Particular attention was paid to panel gaps, the doors are gapped to fit accurately into the apertures, rather than Morgan style which have a flange and require much less fitting.
The body was prepared and painted to a very high standard, Vicarage being keen to invite comparison with Rolls Royce standards of paintwork. Also a bit of marketing PR as he says. The chassis and other items were powder coated black. All fixtures, including screws etc. were either galvanised or stainless.
The suspension was Ford derived with some Vicarage modifications. The engine and gearbox were Alfa Romeo.
The car rode and handled well and was a fun car to drive. According to my friend the car is very pretty in the flesh.