The 25-year-old was rehearsing a flying sequence using a harness when he was sent plummeting by the blast, which was part of the stunt. He was conscious after smashing to the ground but told horrified colleagues: “I can’t feel my legs.”
“He told crew members who went to help him he couldnt feel anything from the waist down. Everyone is just hoping he makes a good recovery. It has come as a terrible shock,” said a source.
Paramedics were called to Leavesden Studios and the stuntman was taken to hospital amid fears he may have been paralysed.
A spokesman for the studio said: “We can confirm a member of the Harry Potter production was injured in an accident. We are awaiting further news. Out of respect for the family we are unable to comment further.”