On Jack Trivia
- Liz Fraser was to appear as the female lead, but she
wanted to move away from comedy, so the role went to the daughter of Sir
John Mills, Juliet. Peter Rogers and Gerald Thomas, as usual, had
worked with her previously in Twice Around The Daffodil and Nurse On Wheels.
- Jim Dale recalls that he only has a cameo role in Jack, but
remembers that unusually one of his adlibbed jokes was used. The scene
where he is
showing Bernard Cribbins to the Inn a fit of bowing breaks out and
eventually Jim says, "I'd get in if I were you, they'll be shut".
The script is normally the bible in a Carry On.
- Internationally the title became Carry On Venus - I
wonder if they new the song.
- This was the first script submitted to Peter Rogers by
Talbot Rothwell and it was originally called Up The Armada, but the censor
refused the title in spite of later films such as Up Pompeii. He
sought permission from Rothwell to change the title even though strictly he didn't need to, but
he felt sure that not every writer wanted to be associated with what the
critics called 'fatheaded farce', and it came the first of many for Rothwell.