LONDON—A few years ago, officials at Buckingham Palace rented out an aircraft hangar to mock up Queen Elizabeth II’s lying in state in Westminster Hall, where they paraded around a replica catafalque with no coffin on it to practice for a historic moment that would be witnessed by millions, according to a former royal official involved in the planning.
It was just one piece in a vast jigsaw puzzle of preparations for the funeral plan, known as Operation London Bridge, that has seen 10 days of minutely choreographed pageantry, orchestrated by a uniquely British combination of aristocrats, military advisers, palace aides and civil servants.
So far, the proceedings to celebrate and mourn the country’s longest-reigning monarch have gone off without a hitch.