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.
| Directing | Bob Kellett | Director |
| Writing | Sid Colin | Writer |
| Writing | Ray Galton | Writer |
| Writing | Alan Simpson | Writer |
| Production | Terry Glinwood | Producer |
| Production | Beryl Vertue | Executive Producer |
| Sound | Carl Davis | Original Music Composer |
| Camera | Ian Wilson | Director of Photography |
| Editing | Al Gell | Editor |
| Production | Thelma Graves | Casting |
| Art | Seamus Flannery | Production Design |
| Costume & Make-Up | Penny Lowe | Costume Design |
| Costume & Make-Up | Ramon Gow | Hairdresser |
| Costume & Make-Up | Susie Hill | Hairdresser |
| Costume & Make-Up | Richard Mills | Makeup Artist |
| Production | Pat Green | Production Supervisor |
| Directing | Mike Gowans | Assistant Director |
| Art | Ernie Blake | Construction Manager |
| Sound | Ian Fuller | Sound Editor |
| Sound | Bill Rowe | Sound Recordist |
| Camera | Tony White | Camera Operator |
| Costume & Make-Up | Brenda Dabbs | Wardrobe Master |
| Directing | Doreen Dearnaley | Continuity |
| Production | Ned Sherrin | Producer |
