This pretence is most fruitful with immigration. The government’s failure to maintain living standards and public infrastructure, from health to housing, can be disguised – with the help of the rightwing press – by presenting migrants as a constant drain on those resources.
The census results are dribbling out at present. And there has been a lot of migration. And of asylum seeking (of course, they’re not exactly the same thing). 14% of the population is foreign born. That’s a vast change in a pretty short time.
Whether it’s a good or a bad thing is up to you. But trying to deny that it is a thing doesn’t work.