The Broadspeed cars were often seen as being competitive with the factory works Coopers, especially at the hands of John Fitzpatrick, who had become the team's top driver.

[3] In 1975, Broad got a contract to prepare Jaguar XJ Series II V12 Coupes for entry in the Group 2 class of the European Touring Car Championship.

For financial reasons, British Leyland elected to discontinue support for the Jaguar racing entries in the ETCC, and in 1977 Ralph Broad sold Broadspeed to a former Mini-racing colleague before retiring to Portugal.

It was not an entirely new car, but rather a heavily modified Mini with a distinctive aerodynamic tail section made of fiberglass that replaced the original steel bodywork at the rear.

Mechanically, performance was enhanced with a reworked cylinder head using larger inlet valves and polished tracts, a Broadspeed camshaft, a rear anti-roll bar, and other changes.