The 53-year-old was found unconscious at his Corby home by a member of the public and driven to Kettering Hospital in an ambulance at about 12.50pm on Saturday.

Staff quickly diagnosed carbon monoxide poisoning, which can prove fatal if not detected early enough, and a crew from the Warwickshire and Northamptonshire Air Ambulance was dispatched.

In just 37 minutes, they flew him 130-miles to the intensive care unit at James Paget University Hospital in Great Yarmouth.

Air ambulance air operations manager at Steve Porter said: "The man was initially picked up by land ambulance in Sidmouth Walk suffering from carbon monoxide poisoning, and was taken to Kettering General Hospital.

"The patient was taken into intensive care and then Kettering hospital soon sussed out he had carbon monoxide poisoning and the clock is ticking then.

"He is doing fine now, once he had had a few hours in the hyperbaric chamber."

Hyperbaric oxygen therapy is commonly used by deep-sea divers as a way to put oxygen back into the blood to avoid developing the bends.