The Unipart Racing Team competed in the British Formula 3 series from 1976 until 1979, using a team of these racing cars.

March has been formed in 1969 by Max Moseley (later FIA president), Alan Rees, Graham Coaker and Robin Herd; the March name came from their initials. Their 783 used a highly developed version of British Leyland’s (BL) own 2-litre, 16 valve engine from the Triumph Dolomite Sprint, hence the March Triumph name.

Unipart, at that time a BL parts division, sponsored the March Triumph 783 racing cars with their patriotic British livery. The team helped launch the careers of many drivers including Tiff Needell, Tony Dron, Brett Riley and Nigel Mansell, who would go on to be the Formula One World Champion in 1992.

The 783, with its angular tub, had mixed results in 1978. The Triumph engine was competitive, but the chassis required some improvements. The 793 was developed to harness ground effects by using lower side pods and skirts to create downforce; this turned out to be very successful. After establishing a strong presence in Formula 3, Unipart transitioned its sponsorship up to Formula One with the Ensign team in 1980 and then to McLaren.