One little discussed consequence of no deal is that the UK will immediately lose access to EU databases and other forms of cooperation including the European arrest warrant, the Schengen information system and Europol. This will hinder policing and security operations in a world where data is key to solving crime. Nor is it inconceivable, say, that we will witness a rise in organised criminal activity, as gangs seek to profit from this disruption.
Can't wait - all the leave voters must be really looking forward to letting criminals get away with it. Another positive benefit!