Ministers rehearse for Queen's death for first time with secret exercise dubbed 'Castle Dove' to prepare for 10 days of national mourning

The run-through apparently focused on 'D+1', the day after the monarch's death

Cabinet ministers reportedly joined Whitehall chiefs to prepare for the first time

It came in the week that the Queen pulled out of a service at St Paul's Cathedral

http://www.dailymail.co.uk/news/article-5905731/Ministers-rehearse-Queens-death-time-secret-exercise.html