By Jessica Gibb & Chiara Fiorillo Prince Harry considered spending time in the UK as a part-time royal to help his ailing father but he will not move back without his wife, Meghan Markle, a royal expert has said. Royal author Tom Quinn said the Duke of Sussex was “visibly shocked and upset” when he heard his father had cancer, so he “immediately” wanted to do something “practical” to help. However, Harry will have known that his offer of help would probably be rejected after he and his wife issued multiple attacks against the Royal Family in recent years, Quinn exclusively told The Mirror. ”H…