King Charles has moved to extend his stay in hospital after his operation sparked concerns about his health as he’s forced to cancel engagements for a month. Charles, 75, had surgery on Friday at the London Clinic and was due to be discharged after two nights. A source told The Sun: “It is understood that Charles would only stay in hospital for longer than two nights if there was some kind of unexpected issue. The extra stay is entirely precautionary but has nevertheless reportedly caused some unease. “It’s now expected Charles will have to avoid public jobs for at least...