Where do you think middle class people (hate that phrase anyway, it's a long time since we neatly fitted into classes) live, Mars?
In most of the country cities and towns have cheap and expensive areas but share town centres etc. Mumsnet is very London centric and gentrified I find, but that doesn't represent most of the UK.
My town centre has gone to the pits, but I don't see an over representation of immigrants in the issues. And we are near one of the areas where people have been housed in hotels etc.
And extremely left wingism at universities? Where did you go to uni? Mine certainly wasn't a hotbed of any such thing. It was much more boring sadly 😂
I genuinely think its just too easy to make immigrants a scapegoat for a lot that is wrong with our country... And almost all of the negatives that affect ordinary people (trying to get a GP appointment, hospital waiting lists, education, potholes, run down town centres as retail parks take over, lack of housing affordability, zero hours contracts, cost of living generally) have all got worse under the utterly right wing Tory government we had for the last 10 years.
You talk about people who go to uni as though they are really privileged. Not only are student bodies much more diverse, but the starting salaries in any public sector roles is barely above min wage and these people will absolutely be living in these working class communities and deprived areas we are talking about. Not all but they will definitely be represented. In my team salaries range from admin staff on 24k to experienced practitioners on 37k. Many single parents, some with disabilities etc. many live in council houses, ex council houses, are not in secure housing etc.
I think you're creating a divide where there isn't one.
I grew up in Knowsley, Merseyside on one of the most deprived areas in the UK. My family all still live there. There are so many issues on the borough, none of which are caused by immigration.