Prince Harry and his wife Meghan Markle have expressed their “concern” about Kate Middleton’s health after the Princess of Wales was admitted to hospital for major abdominal surgery. King Charles, who turned 75 two months ago, is also preparing for a prostate operation. The intervention came after months of claims of a severely strained relationship between the estranged Sussexes and remaining members of the Royal Family. A source claimed the couple contacted the pair to pass on their concerns. “The King and the Princess of Wales have received support from Prince Harry and Meghan regarding the…