London, UNITED KINGDOM - **FILE PHOTOS** Prince Philip, Duke of Edinburgh traveled from Norfolk this morning to King Edward VII Hospital in London for observation and treatment in relation to a pre-existing condition. The admission is a precautionary measure, on the advice of His Royal Highness’ Doctor. Here on archive material during Trooping the Colour 2017. **SHOT ON 06/17/2017** *UK Clients - Pictures Containing Children Please Pixelate Face Prior To Publication*, Image: 489154441, License: Rights-managed, Restrictions: , Model Release: no, Credit line: BACKGRID / Backgrid USA / Profimedia