'One in five Londoners want the capital to become independent' says this article in the Evening Standard by Benedict Moore-Bridger:  http://www.standard.co.uk/news/uk/one-in-five-londoners-want-capital-to-split-from-rest-of-uk-and-become-independent-9722652.html

And I would guess that none of them were English - probably they are all BME people.