OK, though I don't get the passive aggressive tone.
Economic migrants have been the lifeblood of the world economy throughout history. Aside from a few of the 'pilgrim fathers' and criminals to Australia, the vast majority of the millions who have left the British Isles over the centuries have been economic migrants seeking a better life than the one they had. They all went to places where other people already lived. The opposition to economic migrants is hypocritical in the extreme, and I see no reason to villify them. There are 300,000 French economic migrants living in London, do your arguments apply to them too? Let's just be honest and say 'we are scared our standard of living may suffer if you come here, and we don't like foreigners much, especially ones with your skin tone and religious beliefs. We don't really want any of the 'genuine' asylum seekers either, to be honest'' I would respect that stance much more than this mealy mouthed crap.
As I said above, the numbers involved in the current diaspora make a civilized response almost impossible.
So what you're saying is, those in the UK that are worried about increasing population density and severe demands on local resources are actually racist and should be honest about it.