Mr Neil said: 'You naturally begin to think the worst.' (Image: GETTY)
Mr Neil continued: "They wouldn't be letting him out unless it was safe to do so.
"So the fact that they are is a huge relief for the Royal Family and for the nation.
"The Duke of Edinburgh is still with us, still around.
"No doubt still determined to cause trouble whenever he can."
Mr Neil said: 'No doubt still determined to cause trouble whenever he can.' (Image: ITV)
The Duke of Edinburgh has been recovering from an infection and subsequent heart surgery. (Image: GETTY)
Prince Philip leaves King Edward VII Hospital in London