The whole chaotic mess created by Brexit was predicted and known. The Yellowhammer report, called by Theresa May in 2019, laid out what was going to happen. They ignored it and went ahead.
They knew and did nothing!!

Let me see now – what were we promised??
Oh yes – £350 million a week for the NHS!
A seamless ‘Oven Ready’ Deal.
Frictionless barriers.
Everything was labelled Project Fear!
What have we go???
Exports to EU down 40.7%
Imports from EU down 26.8%
Firms drowning in red tape.
Restrictions on travel.
Firms shutting down.
Firms moving abroad.
A colossal undisclosed amount spent on thousands of bureaucrats, thousands of lawyers, thousands of customs officers.
A colossal amount on extra border checks, customs posts, lorry parks.
An end to EU collaboration projects.
Huge cost of duplicating EU projects.
Delays at ports for extra paperwork for travel and goods.
Extra costs incurred.
Price rises.
Extra costs for travelling to Europe – health, and insurance.
What were those benefits we were promised??