Radio Times review

Some Home Guard admin elicits the expected peevishness from Mainwaring in this late-era episode. The Captain reveals his written character assessment of his sergeant to the man himself: "Your general bearing is very slack." Wilson's disparaging laughter at all the red-tape nonsense sounds so genuine that you wonder whether something tickled John Le Mesurier during recording.

It leads to a platoon recruitment drive that requires a face to go on the accompanying poster, but whose should it be? "We should all vote in a secret ballet," suggests Jones. Among other delights are Godfrey's mortified expression at the suggestion that he's being rude, and some top-drawer doddering from Harold Bennett as Mr Blewitt.