That decision was reckless by the English and Welsh. All others in GB voted to stay in the EU. The nationalistic "we want the Empire back" morons will find in the end a Small Britain that has to cope with an economy in a worse shape than after Thatcherism. Even worse, the young generation will almost completely leave to find opportunities in a non-isolationist world.
Many regret that they voted for Brexit, and many of the political dimwits forcing that decision now backtrack on their glorious, but always unrealistic promises. Even the biggest screamers like Boris Johnson now chicken out.
What the English/Welsh need to do is fire their entire political establishment, put an end to the two party system in exchange for multiple parties, and while they are at it become a republic. Colonial times are over!