 The Doughnut was officially opened by Queen Elizabeth II and the Duke of Edinburgh in 2004. The then Prime Minister of the United Kingdom, Gordon Brown, visited the Doughnut in 2008, and praised the staff working there in a speech. The Doughnut has twice been visited by Charles, Prince of Wales, since its opening. Charles was accompanied by Camilla, Duchess of Cornwall in 2011, on his second visit to the Doughnut.
