A doorman stands at the entrance to King Edward VII hospital in central London where Britain's Prince Philip, Duke of Edinburgh was admitted on February 17, 2021. - The 99-year-old was taken to the private King Edward VII Hospital on Tuesday evening, the palace said, adding that it was "a precautionary measure, on the advice of His Royal Highness's Doctor" after the prince felt unwell. (Photo by Tolga Akmen / AFP)