Slight tangent, but it's not unsurprising that Brits, especially older Brits, might hold this view btw (that everything should be produced at home if possible). Prior to the world wars, the UK imported many things from the empire; during the war (particularly WWI), and with the closure of the seaways, there was a massive food problem because home industry was so far behind the modern times as to be useless. This has lesson has somewhat echoed down the years.
Isolationism is a fool's game, even for countries like the United States, let alone tiny Great Britain.
I doubt very highly that the UK could even physically grow the food it requires, let alone maintain all other industries a modern country needs to not only function, but expand.
Of course, Britain literally is an island... :)
Slight tangent, but it's not unsurprising that Brits, especially older Brits, might hold this view btw (that everything should be produced at home if possible). Prior to the world wars, the UK imported many things from the empire; during the war (particularly WWI), and with the closure of the seaways, there was a massive food problem because home industry was so far behind the modern times as to be useless. This has lesson has somewhat echoed down the years.