It’s as if royal watchers have been fed on scraps all their lives – the breaking of the colour of a pair of tights protocol here, the “body language that suggested tension” there – and the Duke of Sussex has laid before them a banquet. His book Spare, leaked to the press, serves up course after course. Hardly had we digested the first revelation - a necklace-smashing fight between royal brothers - when the next were presented. The boys “begging” their father not to marry Camilla; two tearful bust-ups between duchesses; Charles joking that Harry wasn’t his; Harry’s frostbitten penis...