Charles,
I believe it is one of the many versions of a Mallock U2, about a Mk 7 or 8 ?
Note the quote from this site about Arthur Mallock and his cars.
" One of the wonderful features of Arthur's designs was that it was nearly always possible to upgrade from one MK to the next through relatively simple changes to item such as body panels and suspension pick up point or parts. This enables customers to enjoy many seasons of competitive racing by developing their original cars. A great example of this is the Norrie Galbraith MK8, originally built in 1969m which by 1977 was up to MK16 specification and fast enough to win the Scottish Hillclimb Championship that year. "
https://www.arthurmallock.com/arthurs-cars
Forgive me if I have it wrong.
Ken H