As we undertake strict isolation, and shielding, there are consolations. This week the box set of the TV classic The World at War arrived at our house from Amazon and I’ve been watching it with my teenage son in an attempt to get some perspective on our current national and global emergency.

Thank goodness there was no Twitter in 1939-40. Imagine the most excitable members of the media responding.

September 1939: “OMG. We are literally at war with Germany!”

October 1939: “France much better prepared than us. Built Maginot Line made of enormous concrete to defend all of France! Even has nice restaurants in it for handsome troops. Sophisticated France. Silly Britain thinks being island will save us. Pathetic!”