King Charles has been seen smiling amid his cancer battle as he returned from a brief meeting with Prince Harry. It is the first time the 75-year-old monarch has been seen since Buckingham Palace revealed he is fighting an undisclosed form of the disease, with Charles grinning as he got a helicopter to Sandringham on Tuesday (06.02.24) alongside with his wife Queen Camilla, 76, following a chat with his 39-year-old son, who travelled from his home in the US in the wake of his dad’s condition being announced. The meeting between Charles and Harry at Clarence House was their first face-to-face e…