> The reason why every European developer migrates to London is to escape the craziness of the continent.
> Every European developer's final 'dream' is to work in the US tech industry - London is the second best thing to reach.
Sorry but no. I think you're delusional about tech salaries in London. And if you want to sell your soul to the finance industry, there are other places where developers make good money, without the need to live in an overcrowded city.