Due to budget cuts at the BBC, it was shot in just two weeks.
Arthur Lowe's refusal to take a script home is based on Lowe's genuine refusal to mix work and his private life.
The drama alleges that Jon Pertwee turned down the role of Mainwaring because he wasn't being offered enough money. The truth of this is unclear, although Pertwee would often complain about his money on Doctor Who (1963) and, according to his successor Tom Baker, he "found it physically impossible to buy a drink".
Throughout the show, Arthur Lowe mentions his wife Joan, who is never seen onscreen. This reflects the unseen status of Captain Mainwaring's wife Elizabeth in Dad's Army (1968). In reality, Joan Cooper made five appearances in the series, the last three as Dolly Godfrey.