Between 1958 and 1971, Hart was successful in a variety of single-seater racing series. He denied race in Formula Junior, Formula 3, and the Lotus factory team from Ron Harris, and in 1968 for the team Church Farm Racing in Formula 2 He took in Formula 2 car at some not for the World Cup scoring Formula 1 race and was able to qualify in 1967 with a Protos -Cosworth for the Grand Prix of Germany at the Nürburgring.
End of 1967, Hart began in the De Havilland aircraft factory in Hatfield, England, to work and gained experience in the development of aircraft landing gear and engines. Hart then moved on to the engine manufacturer Cosworth, left this but in 1969 again to (later Brian Hart Ltd. ) His own company Hart Racing Engines to start. Similar to Cosworth, he worked for Ford in racing engines and developed the BDA engine, the Ford began during the 1970s in rally cars. Hart developed from 1976 's Formula 2 engines, with whom Brian Henton and Derek Warwick Toleman Racing for the first two places in the Formula 2 European Championship in 1980 occupied. In 1981, Hart joined with their own turbo engines in F1; he supplied with Toleman, RAM Racing, Spirit and the team Haas, however, only small teams - could realize no championship points - with the exception of Toleman. After the end of the turbo era to Hart initially dealt with the preparation of Cosworth engines for various customer teams, before he returned to Formula 1 with the financial support of the South African oil company Sasol 1993. By 1997, Hart supplied the Team Jordan, Arrows and Minardi. The best result in this period were two third places in 1993 and 1995. Late 1997 the brand saw Tom Walkinshaw Brian Hart's operating and incorporated it into his racing Arrows.