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