The worker died instantly and police officers and the Health and Safety Executive are investigating.

The Bristol Evening Post said the accident happened just before 5.30pm on Wednesday but, due to concerns about safety, police and emergency services had to return to the scene on Thursday to recover the body of the man, who was believed to have been in his 20s or 30s and from Wales.

Avon and Somerset Constabulary spokesman Martin Dunscombe said: “Police were called to the Fry’s Cadbury site at 5.30pm on Wednesday, to a sudden death at the location.”

A spokeswoman for the HSE said that they were working with the police to examine the scene.