- How old is Bernard supposed to be? He's portrayed as callow and naive, but is obviously in his mid forties at the beginning of the show's run (and if Actor-Shared Background holds with him as is does for Hacker and Sir Humphrey, he shares Derek Fowlds's 1937 birthdate). The only explanation I can think of is that it was a midlife career change, but that's never hinted at in the show.
- According to the novelisations, Bernard is supposed to be in his late twenties-early thirties and a rising young star in the Civil Service building his career fresh from university. So it is a variation of Dawson Casting. The poorer picture quality of television sets and broadcasts in the 1980s did much to hide the actor's real age.
- All three of the principal characters are married, but none of them ever wear wedding rings. This could be an oversight, or simply a cultural norm from the Eighties.
Headscratchers / Yes, Minister