As for the collapsing economy
where? Unless it's from dailymail there is no collapsing anywhere,
Well I don't read dailymail. There are a couple of factories and suppliers that shut down. There are multiple industries that have warned that they cannot remain open for much longer specially if gas prices go any higher. The food prices are soaring, and a lot more. These are all signs of collapsing (not collapsed) economy.
and the energy crisis is not limited to the UK alone, China is rationalizing power and it had nothing to do with Brexit, food prices have gone through the roof from India to Nigeria and it wasn't caused by the troubles in the UK. Besides the UK imports only 11% of its oil needs, one of the lowest percentages in the EU, they are better prepared for an energy crisis than the rest of Europe.
True, I never said the problems are only in UK.
As for food price elsewhere it is because of inflation that happens everywhere specially with COVID and the stupid money printing policies that all governments seem to have. But in UK all of it is being intensified by this recent energy crisis.