De tijd van de Franse Revolutie, en burger Robespierre die de Franse aristocratie onthoofde. Wanneer het bericht Engeland bereikt, nemen twee heren, Sir Rodney Ffing en Lord Darcy, de taak op zich om hun Franse tegenhangers te helpen. Sir Rodney is een meester in vermommingen en wordt 'de zwarte spijker', gesel van camembert en bidet, de leiders van de Franse geheime politie...
Nee, helaas is Carry On ... Don't Lose Your Head nog niet beschikbaar op Netflix in Nederland.
| Directing | Gerald Thomas | Director |
| Production | Weston Drury Jr. | Casting |
| Art | Lionel Couch | Art Direction |
| Camera | Alan Hume | Director of Photography |
| Sound | Eric Rogers | Original Music Composer |
| Editing | Rod Nelson-Keys | Editor |
| Writing | Talbot Rothwell | Screenplay |
| Production | Peter Rogers | Producer |
| Production | Jack Swinburne | Production Manager |
| Costume & Make-Up | Geoffrey Rodway | Makeup Artist |
| Crew | Terry Gilbert | Choreographer |
| Costume & Make-Up | Stella Rivers | Hairstylist |
| Directing | Jack Causey | Assistant Director |
| Sound | Ken Barker | Sound Recordist |
| Costume & Make-Up | Emma Selby-Walker | Costume Design |
| Camera | James Devis | Camera Operator |
| Sound | Dudley Messenger | Sound Recordist |
