Leigh stuntman David Holmes, 25, was injured last month after he was working at height in an aerial sequence for the new Harry Potter and the Deathly Hallows film.
Mr Holmes, the stunt double for Daniel Radcliffe, who plays the title role, was admitted to hospital after receiving back injuries when he fell from a harness.
A spokesman for the Health and Safety Executive (HSE) revealed that the organisation is conducting an investigation into the incident and some of the set will remain closed.
The representative explained: “The set has been cordoned off and will not be used again until we have finished that part of our investigation.”
Last month, the HSE reminded of the health and safety issues concerned with working at height, pointing out falls are the single biggest cause of fatalities in the industry.