A funny thing happened to Lurkalot, serf to Sir Coward de Custard, on the way to Custard Castle. Lurkalot sells lusty love potions and rusty chastity belts in the market place, but on this day Sir Graggart de Bombast arrives to sack the castle, and to get the lovely Lobelia Custard in the sack! Lurkalot must help Custard cream the knight in pining armour...
Unfortunately the movie Up the Chastity Belt is not yet available on HBO Max.
| Writing | Sid Colin | Writer |
| Writing | Alan Simpson | Writer |
| Writing | Ray Galton | Writer |
| Directing | Bob Kellett | Director |
| Production | Ned Sherrin | Producer |
| Production | Terry Glinwood | Producer |
| Production | Beryl Vertue | Executive Producer |
| Camera | Ian Wilson | Director of Photography |
| Editing | Al Gell | Editor |
| Sound | Carl Davis | Original Music Composer |
| Costume & Make-Up | Ramon Gow | Hairdresser |
| Costume & Make-Up | Brenda Dabbs | Wardrobe Master |
| Directing | Doreen Dearnaley | Continuity |
| Art | Seamus Flannery | Production Design |
| Costume & Make-Up | Penny Lowe | Costume Design |
| Camera | Tony White | Camera Operator |
| Directing | Mike Gowans | Assistant Director |
| Costume & Make-Up | Susie Hill | Hairdresser |
| Production | Pat Green | Production Supervisor |
| Art | Ernie Blake | Construction Manager |
| Sound | Bill Rowe | Sound Recordist |
| Production | Thelma Graves | Casting |
| Costume & Make-Up | Richard Mills | Makeup Artist |
| Sound | Ian Fuller | Sound Editor |
