Silverstone Circuit, Northants, UKMay 18–19, 2013 The AC Cobra of Leo Voyazides and Simon Hadfield leads the field for the Turnkey GT & Sports Car Cup race on its opening lap.Photo: Pete Austin During the Martini Trophy race, Robert Shaw’s Chevron B26 leads Kevin Wilkins’ Lola T296 and Hugh Price’s Chevron B21.Photo: Pete Austin In the ’70s Roadsports race William Jenkins’ BMW CSL leads Nic Strong’s Ford Capri.Photo: Pete Austin Henry Osterbaan’s Alton AR1 in Classic Racing Cars.Photo: Pete Austin Jeremy Smith’s March 2-4-0 won the first Derek Bell Trophy race.Photo: Pete Austin