I remember someone on HN complaining that there were places selling authentic Polish sausages in London, and somehow it sounded they were deeply unhappy about it.
I don't know if average Londoners can still afford authentic Polish sausages, but if they can't, I hope the original commenter is happy now.
It only makes sense to compare GDP between countries on PPP basis. Otherwise you don't account for currency rate fluctuations and difference in averge price level.
IMF figures for 2025:
87% GDP per capita PPP,
50% nominal GDP per capita
I don't know if average Londoners can still afford authentic Polish sausages, but if they can't, I hope the original commenter is happy now.