A simple google search might have informed you. Indeed there is a Wikipedia page on multiple ways of measuring it. At least 100 countries are more diverse, eth

A simple google search might have informed you. Indeed there is a Wikipedia page on multiple ways of measuring it. At least 100 countries are more diverse, ethnically, linguistically, racially, you name it. Germany is among them, so is the US. France is about the same level of diversity. A majority of EU countries are more of a melting pot than the UK, in fact. The UK is 87% white, 95% English speaking, 92% Christian/atheist/agnostic. It doesn't get much less diverse than that. And of course the places that aren't homogenous (inner London for instance), all voted "remain" by a huge margin.