In 1980 GTM entered its most successful era by far when it was bought by Peter Beck, Paddy Fitch and Dougal Cowper, the latter departing relatively soon after.

The company moved to Sutton Bonington in 1982 and over the next 20 years refined the GTM Coupé, as it became known, and developed a succession of new models.

In 1998, following three years in development, Beck and Fitch launched a more up-market sports model, the Richard Oakes designed Libra.

GTM Cars again featured on the Westfield/Potenza stand at the National Kitcar Show at Stoneleigh in Warwickshire on the May Bank Holiday weekend 2009 in the shape of a red Spyder.

In late January 2010, Westfield Sportscars made the following announcement: "Unfortunately due to parts procurement issues we are no longer offering the current range of GTM models.