Company Credits
Production Companies
Distributors
- Nationwide Distributors Ltd. (1974) (UK) (theatrical)
- Continental Video (1984) (USA) (video) (as "Madhouse Mansion")
- Nucleus Films (2009) (UK) (DVD)
- Cinema Group (VHS)
Other Companies
- Berman's and Nathan's (costumes)
- De Lane Lea Sound Centre (sound re-recorded at)
- Nagra Sound Service (location sound)
