My favourite The Crown blooper so far was the one recently spotted by a Telegraph reader: ‘As Head of the Armed Forces and Colonel-in-Chief of four Scottish regiments, the Queen would not choose The Atholl Highlanders with which to pipe her guests into dinner […] It is inconceivable that the Queen’s Piper would play any incorrect notes – nor would he march to a 6:8 time signature while playing at the speed of a slow air.