Not only kit cars

Connew

Peter Connew displayed outstanding optimism in undertaking this project, for when the age of one-off specials in Grand Prix racing had passed this Briton built a straightforward Cosworth engined kit car in a private garage with the help of friends, and there was even a Connew PC1.
Francois Migault failed to qualify for the 1972 British Grand Prix when the suspension failed. At the second attempt in the Austrian Grand Prix is Migault again last in qualifying with the loss of eight seconds. Connew's only start ends in the twenty-third lap and since that time he disappears in history.

Driver
1969 Francois Migault

Tecno

The Pederzani brothers built some very successful F3 cars in the early 1970s. When Martini agreed to back a Formula 1 project the Pederzanis went ahead, but not with a straightforward Cosworth kit car which could have been within Tecno capabilities, after all, Luciano Pederzani was an engine designer.
The Tecno PA123 which appeared in 1972 was not handsome, and its engine was a noisy flat-12. Modifications to engine and chassis continued through 1972. Tecno recorded six starts in Grands Prix and Nanni Galli was still running at the end of the Austrian race. Derek Bell remembers."Tecno ? The worst car I ever drove. Horrible."
Alan McCall was commisioned to design a chassis for 1973. There seemed to be promise as Amon placed it sixth in Belgium, but the point gained there was the only one a Tecno car ever won. The Gordon Fowell-designed and modified car appeared at Silverstone that year. The last appearance for Tecno cars was at the Österreichring, after which the brothers and their backers abandoned the whole sorry affair.

Drivers
1969 Francois Cevert (F2)
1972 Derek Bell, Nanni Galli
1973 Chris Amon

Token

This was another of the hopeful small-scale British project of the 70s, initiated by Ron Dennis and Neil Trundle, who were unable to finance it and passed it over to Tony Vlasopoulos and Ken Grob. Ray Jessop designed an angular Cosworth kit car, which was driven in a brief race debut by Tom Pryce in 1974 Belgian Grand Prix. Pryce showed well until another driver knocked him out. David Purley failed to qualify at Brands Hatch and then Ian Ashley drove it to finish 14th in the German Grand Prix and 13th in Austria. And that was the end.

Drivers
1974 Tom Pryce, Ian Ashley