Of course London is an English city, the fact it's full of immigrants is nothing new, that's nothing unusual for any capital city and indeed has always been the way of things since time immemorial. Likewise ghettoised areas where certain races and religions live almost exclusively have always been the norm. If you look historically at London's demographic and how varying areas have changed and shifted in terms of centred immigrant groups in the last say 300 years it's really really interesting, but ever, ever changing.
Regarding Robinson, he's an embarrassment to English men, and needs to stop whining like a little ***, stirring up hatred to suit his own agenda, and generally overstretching his single brain cell. It needs a lie down.