Mr. Tea
Let's Talk About Ceps
Ah, ok. I think you're right, and probably a little more true of the situation in the U.K. vis-a-vis the one in the U.S. (since we have more space literal and otherwise for newcomers here)
That's exactly it: Britain is a very crowded country, England even more so, and the south of England (which is receiving the most immigrants) even more so still. Immigration, coupled with more people living alone and people living longer, is putting a massive strain on the housing market, not to mention many other services.