While I agree with Mr Umunna (it hasn't been a good few months for sensible people in Labour, or indeed anywhere) the following is interesting:
"We now need a meaningful integration programme which works for all parts of the UK and an immigration policy which allows all to celebrate and look beyond our differences: a middle way between the laissez-faire multiculturalism favoured by successive British governments and the assimilationist politics of the French burkini ban."
He is right in the principle, but his examples highlight the confusion whenever anyone debates "multiculturalism": arguably "laissez-faire multi-culturalism" is what has happened in France: there, successive governments have adopted a "take it or leave it" approach to their native "culture". This has left other cultures largely ignored. "Assimiationist politics of the burka ban" is such a load of nonsense that I am amazed a clever man like Mr Umunna should utter it:
the burka ban in France applies to so few people that it hardly counts as "assimilationist" - it's just another part of the same approach outlined above. By comparison to countries like France the UK has done pretty well, but of course it is not enough, and his overall conclusion is correct I am sure