British officials have revived Cold War emergency plans to relocate the royal family if there are riots in London if Britain suffers a disruptive departure from the European Union next month.
Brexit date is March 29, and there are some fears of civil unrest.
Among the "worst case" scenarios, the Mail on Sunday reported that Whitehall contingency plans include moving the Royals to safe locations away from the capital.
Officials in the Civil Contingencies Secretariat, the Government department responsible for emergency planning, have "repurposed" a secret operation under which the Royals could have been accommodated in various country houses to protect them from enemy forces during the Cold War.