He told the Queen about his dialysis treatment and how he has continued to run his business with the help of a portable dialysis machine.

He said one thing he enjoyed most about running his jacket potato food truck in Tamworth was talking to his customers.

Presenter Gaby Roslin, who was first to receive her loaded jacket potato from the Queen on Wednesday, said it was “possibly the strangest morning of my life”.

She added: “It’ll be one of those things that when I tell my daughters later, they’ll say, ‘What, sorry? The Queen served you a jacket potato?’

“And then we had a good giggle, and Tom Read Wilson and I sang Spudman’s theme tune with the Queen serving baked potatoes.

“If you say that in a sentence, it doesn’t seem real.”