Their main product is a Lotus Seven inspired car – vehicles originally designed by Colin Chapman with only the bare essentials for motoring in order to give the rawest and most exhilarating driving experience.

Westfield prefers to employ the same glass fibre body method that Lotus has traditionally used for their other models such as the Elise, Esprit, and Elan, rather than the aluminium used by Caterham.

Westfield also pioneered technical innovations such as independent rear suspension and a wider chassis, which other manufacturers have since adopted.

The wide range of drivetrain configurations available to Westfield customers also included the Honda S2000 engine and gearbox as part of the company's MegaS2000 kit and cars.

According to figures given to the magazine Total Kit Car, Westfield produced about 450 SEi and XTR chassis each year.