USA germany russia
Cars financial services oil and gas commodities.
Those countries have biggest power to say anything.
While UK talking a lot in reality world doesn't need nothing from UK there is no gas no oil no food and not even skilled workers, they want to be leader for what ?
So rationally speaking UK and france just talking while germany russia and usa providing all what needed.
Off course £ is just all the world wealth and assets because everbody brings their wealth in UK and convert in £ but UK does not provide nothing else what world needs.
We need mostly cars gas oil and other commodities and best cars come from germany off course UK don't even make cars the rolce Royce is BMW and Bentley is wolkswagen.....so we get it from germany things what we we need.