The chateau used in the film at the end was Waddesdon Manor in Aylesbury. Built for the Rothchild family it is the only genuine French chateau in England.
Paris, 1789. The Great Revolution has begun. The hands of the masses are smeared with the blood of the poor bleeding aristocracy. Every day the tumbrels run a regular half-hour service between the Bastille and the many guillotines around the city. ...
Pommfrit swings out of a window during the fight scene in the Chateau Neuf. When he re-enters, he starts fighting a soldier with a black hat. When the soldier smashes the bottle of wine with his sword in the next shot (and for the remainder of the fight), the hat is gone.
A version of this film shown on BBC television had alternate music/SFX cues compared to the Region 2 DVD release. Notably on the BBC version a 'dramatic' music cue when Camembert accidentally stabs one of his own men with a spear in the finale, but the music cue is missing from the DVD version. At the very end when both Camembert & Bidet are beheaded at the guillotine by Sir Rodney-the blade drops and the sound of the audience cheers along with a brief music cue, but on the DVD version Sid James's famous laugh is heard instead without any music.