I think this says more about the problem with averages.
For example, while it’s #6 by GDP it’s #21 by GDP per capita.
The wealth is also very unevenly distributed, 1/7 are skipping meals due to poverty: https://www.independent.co.uk/news/uk/home-news/cost-of-livi...
Here is the map based on Eurostat data. Notice that richest area and almost all poorest areas are in UK
https://vividmaps.com/the-top-ten-richest-and-poorest-areas/
I think this says more about the problem with averages.