CDS, then called Sons of England Dramatic Society, presented Rachel Grieve’s If This Be Error in July 1971. The show was directed by Percy Fiamingo and the cast was as follows:
The production team was:
- Caroline Moore - Cynthia Alderson-Smith
- Dr. David Moore - Gerald Derby-Lewis
- Mrs. Mack - Ruby Venter
- Nina Moore (Dr. Moore's daughter) - Cynthia Derby-Lewis
- Barbara Moore (His daughter-in-law) - Dianne Sands
- Charles Moore (His son) - Graham Craig-Clark
- Nick Grant - Keith Canning
The production team was:
- Stage Manager - Keith Canning
- Properties - Jeanne Milner
- Assistants - Wendy Milner, Glynis Owen, Jeanne and Mike Hall
- Prompt - Jenny Rowlandson