It was a Derby day like no other. The favourite, Benvenuto Cellini, was beaten - then declared a non-runner twenty minutes later, voiding bets and triggering a major Rule 4. The decision has split punters, bookmakers and the sport's rule-makers. The panel digs into whether the stewards got it right and whether the rule itself is fit for purpose.

Plus: the Jockey Club's free festival on the Hill, drowned by the weather; Aidan O'Brien's 50th British Classic and his son's Oaks; Bay City Roller's thrashing of the world's best, Calandagan; and the riding masterclasses on a day when nobody knew where the good ground was — led by Laura Pearson's remarkable return.