The UK was the first country to go through the Industrial revolution and for a while they had a huge advantage over other countries.
But other countries eventually caught up to their industrialization. Eventually, the UK did no longer have an advantage in terms of productivity. So around WW2, Churchill transferred substantial knowledge to the US through the Tizard mission, so the US supplemented UK production.
After that, came the Suez crisis, which is when the UK stopped being a superpower.
The UK still has some of the best research universities in the world, but the role as London as trade hub is in decline.
The UK might do well in the future, and will continue to be relevant, but the best days are gone.
But other countries eventually caught up to their industrialization. Eventually, the UK did no longer have an advantage in terms of productivity. So around WW2, Churchill transferred substantial knowledge to the US through the Tizard mission, so the US supplemented UK production.
After that, came the Suez crisis, which is when the UK stopped being a superpower.
The UK still has some of the best research universities in the world, but the role as London as trade hub is in decline.
The UK might do well in the future, and will continue to be relevant, but the best days are gone.