> If you want to make that argument, you'd at least need to look at the proportion of the population that's Western European, not just British.

The page I linked shows 53,8% white in 2021. Even if you count the majority of whites as West Europeans (and not East Europeans), they were under 50% in 2021, probably even less today.

If you have more accurate and up to date data, please share.

But that misses the point. I don't say London is not high-trust because of the non-Western population. I say London is not a western city anymore because of its population.