The characters break the fourth wall three times throughout the film: the first is when Sir Rodney first meets Jacqueline, the second is at Ffing House just after Camembert sends Bidet to follow Desiree, and the third is when Sir Rodney is with Desiree in the rose arbour.
Alternate titles included "Short Back and Sides", "Heads You Lost", "Death Of A Hat Salesman" , "Daddy Wouldn't Buy Me A Tourniquet" and "A Romance of the French Revolution by Talbot Rothwell or a script with cuts in it by Ivor Guillotine.
After twelve Carry On films and various other comedy releases with Anglos Amalgamated, Peter Rogers was forced to look for a new distribution company. The Rank Organisation proved willing. Legal questions over title ownership and Rank's concern over inheriting a rival's brand name led to the abandonment of the Carry On prefix from this opening venture. In a post-production meeting in February 1967 Rogers commented that: "as the film was more visual than previous "Carry On" productions it could stand on its own without any reference to 'carry on'." Still, Rank were mindful of the success of the series and considered the release as "virtually the thirteenth "Carry On" film". The poster tagline, 'Carry On Laughing Until You Have Hysterics But Don't Lose Your Head' was used as a conscious link with the past and won over earlier suggestions including; "that "Carry On" team has the French Revolution in Convulsions" and "Carry On Tumbrils - they're the new rescue squad of the French Revolution." The American release removed all confusion and simply re-titled the film Carry On Pimpernel.
Dany Robin was the wife of Sidney James' agent. Sid stayed at their house one night when her husband was away, she was somewhat surprised to wake up to him attempting to get into bed with her. He tried it again later in the night.
During the Good Friday 2016 early morning, 7am start, daytime broadcast, the UK's ITV 2 kept in the infamous "Count" dialogue lines during the Duc de Pommfrit talking to Desiree Dubarry scene, at about 46:14. The part where Joan Sims is in the garden with Charles Hawtrey where she says "my cousin, the count", which a mishearing implies shes saying "my cousin, the '[C' word]". You can hear a smirk from Charles Hawtrey then see Joan Sims about to kill herself laughing just before the camera cuts to the next scene. It was always there, but its plausible that it was probably originally left in to push the censor for the cut negotiations and it was left in for the original cinema releases. Primary ITV channel TV company ITV PLC now own the Rank Organisation films outright, would have several alternate broadcast edit versions pre-prepared, so this may have been an error in playing the wrong version. That particuar word Count, which in the scene can easily be mis-heard as the swearword, which rhymes with hunt, is considered the strongest swearword to broadcast in the UK, on a par with the "N word in the USA, so it is very rare to hear the actual word. The late evening showings of this Carry On film, leaves this scene intact too.
The trivia item below may give away important plot points.
Due to the nature of the subject of the French Revolution's Gullotine scenes, this film is extremely likely to be withdrawn from Broadcast in the event of news of beheading or decapitations at the time of scheduled Broadcast.