“There was a lot of research,” he said. “I tried lots of things. I tried being a vegetarian, I tried low calorie, low fat and it just didn’t work for me. I was really at the end of my tether and I happened to see a book called ‘Why we get fat and what to do about it’.”

“Effectively what I do is low carb, low sugar, low alcohol. I eat meat and green veg and fish and eggs. I don’t eat bread, pasta, rice, potatoes. I don’t drink.

“I know it’s not for everybody, I realise that, but it worked for me.”