I’ve been fascinated by the recent BBC 4 documentary series ‘The Secret World of Whitehall’ about what goes on behind the scenes in that most famous of London addresses.

3 episodes in total, available for the next week. My favourite bit is in the third episode where there is an admission to forgery and what amounts effectively to a coup d’etat by one minister, shortly after Winston Churchill had suffered a stroke - kept secret at the time by his aides.