"Media reports have speculated on whether the Government might be preparing to use its emergency powers conferred by the Civil Contingencies Act 2004 to manage various problems commentators have suggested may emerge after Brexit, particularly if there is no deal.
UK: House of Commons Library briefing: Brexit: contingency planning and powers (pdf):
“Media reports have speculated on whether the Government might be preparing to use its emergency powers conferred by the Civil Contingencies Act 2004 to manage various problems commentators have suggested may emerge after Brexit, particularly if there is no deal.
This briefing looks at emergency planning in the UK and specifically at the how emergencies are defined, how the Government may deploy its emergency powers to deal with them, and how this relates to no-deal planning.”