Talk of the trade: More worthy of Wapping than Farringdon

QUIZ time: which newspaper took a double-page spread last Friday to ask six royal biographers such questions as 'Have Charles and Diana had sex in the last seven years?' and 'Did Prince Charles sleep with Camilla two days before the (royal) wedding?' The intrusive Sun, the circulation-chasing Mirror? No. These matters of public interest were explored at inordinate length by the Guardian. Prurient or what?