Dick Harvey bought a chassis from George Jeffrey and built a fully developed 2 seater with a 642cc Reliant engine and gearbox and Morris Minor back axle.
First raced at Aintree in 1972 with three more races and two blow-ups. It's final race was at Silverstone and the car finished last and was lapped.
Other racers involved, Mike Chitenden, Rod Hill, Richard Stevens
The Darvi was developed from the Jeffrey.
Jon Harvey (Dick Harvey's brother) the mechanic went on to run Avitar.
I welcome any more history for the Jeffrey and any "sippets" are most welcome.