Roger Buxton in the 1930 Alfa Romeo 1750 6C Zagato Spyder. Photo: Peter CollinsThe intrepid Mark Walker in his much-raced 1922 GN Thunderbug. Photo: Peter CollinsPatrick Blakeney-Edwards’ provisionally winning 1928 Frazer Nash Super Sports. Photo: Pete AustinTom Walker’s spectacular 1952 Allard 5.4-liter J2X Le Mans. Photo: Ken Carrinton