Mandatory Credit: Photo by Tim Rooke/Shutterstock (12455318bv) Catherine Duchess of Cambridge. Her Royal Highness' visit will mark the re-opening of the RAF Air Cadets' Windermere Adventure Training Centre. 21 Sep 2021 Catherine Duchess of Cambridge visit to Cumbria, UK - 21 Sep 2021 The Duchess of Cambridge travels to Cumbria where she carries out visits highlighting the beneficial, lifelong impact that nature and the outdoors can have on young people.