Chesterton Commercial Holdings Ltd has added its support to the Heritage Grand Touring Car Challenge, starting at Donington Park this weekend (May 20/21).The company, headed by racer Grahame Bryant, has become a partner to the HGTCC, which is one of the leading race series in Britain for sports, saloon and GT cars from the 1960s and 1970s.Bryant and his son Oliver are already involved in the series competing in their Morgan +8, and Olly was one of the stars of the opening round at Oulton Park when he battled with the Ford Mustang of David Yates and Graham Scarborough. They may also field their stunning ex-Roy Salvadori AC Cobra in some Heritage races later in the season."We're delighted that Grahame has extended his support for the series through Chesterton Commercial Holdings Ltd," says Heritage Racing Support's Motorsport Manager Mike Youles. "We are working to involve significant commercial partners in the Heritage series and to offer their guests the chance to be at the heart of the sporting but relaxed atmosphere of our events."