The fact that the two main characters are a former PM and senior civil servant (let alone that we knew and loved) is for the most part irrelevant. The play is best summarised thus: Two old codgers saying things like 'the empire was a good thing' or saying 'why does a University reading list need a trigger warning, and a young female lecturing them about why they can't say such things; about how slavery is bad; why an academic text should have trigger warnings. There is a meandering stale part about Brexit too. Because the enlightened bright young thing is lecturing the old people on stage, it feels rather as if she is lecturing the audience as well. The talk in the loo queue during the interval was "this wasn't what I was expecting". There was not an ounce of satire and few jokes. The only relief was when Sir Humphrey launched into one of his locquacious speeches. I know I haven't mentioned the plot.....There wasn't really one. Avoid. Sadly.