There are several companies selling kits of old jags. C-type and D-type. There are several ki car companies selling replicas. This link gives a good insight into many types, inc Chesil Porsche 356, Nostalgia Jag cars, a couple of Ferrari Dino kits based on MX5 etc.
http://www.kitcarlinks.com/Caterham own the Lotus7 but Westfield make a “Seven inspired” car with Westfield livery. That seems to be the cop out.