The Charterhouse Group, the Human Capital Management Specialist, will be title sponsor of the 2007 Heritage Grand Touring Car Challenge.As the HGTCC prepares for its most high profile season to date, with races at some of the biggest events on the 2007 British motor racing calendar, the Charterhouse Group has been confirmed as the major partner for the series.Interest in the series for saloon and GT cars of the 1960s and 1970s has boomed in recent times, boosted by a 2007 programme that is headlined by races at the A1 GP and WTCC events at Brands Hatch.With competitor demand running at record levels, the HGTCC is a sell out for 2007 and such has been the demand for entries that the series organisers have had to turn prospective racers away."I am delighted to welcome the Charterhouse Group as title sponsors for the Heritage GT Car Challenge," said series founder and director Roger Bennington of Heritage Racing Support. "To attract such a prestigious title sponsor is reward for the support of the teams and drivers over recent seasons. We are sure that the team at Charterhouse will enjoy the racing as much as the drivers and the fans!"Commenting on the Charterhouse sponsorship, Founder and Managing Director, Andy Jenkinson said: "I must congratulate Roger for his incredible success with The Heritage Grand Touring Car Challenge. I am equally delighted to sponsor and support this series. The list of 'Who's Who' of tin top racing and previous touring car champions makes this one of the best classic series on the calendar. Like Charterhouse, The HGTCC is at the top of its game, and we look forward to welcoming everyone to what will be considered by many to be the racing highlight of the year."The Charterhouse Heritage GT Car Challenge starts at Donington Park on 21/22 April during the British F3/British GT meeting, when a capacity field of 36 cars plus reserves has been assembled for two races on Sunday.