There's been fire drills inside the BBC for the queen for years: https://www.theguardian.com/uk-news/2017/mar/16/what-happens-when-queen-elizabeth-dies-london-b

There's been fire drills inside the BBC for the queen for years: https://www.theguardian.com/uk-news/2017/mar/16/what-happens-when-queen-elizabeth-dies-london-bridge https://www.theguardian.com/uk-news/2017/mar/16/what-happens...