I feel your pain. I bought a Victorian terrace house in 2008. I'm in the Midlands. On the edge of an area known as drug dealing etc but ok. Very quiet, clean and mostly populated by retired people who'd probably paid about 2k (if that) when they originally bought the houses. Then came the credit crunch, people dying, relatives selling house off cheap to landlords and it became a shit hole.
It really opened my eyes and I couldn't wait to get out but was in negative equity and had to wait until the property market recovered. The first HMO's were full of Polish guys but gradually it changed and we'd have Africans, Pakistanis, various Middle Eastern types. The ones renting whole houses as families weren't too bad unless it was the Roma as they moved in en masse. My neighbour let her house to one of the Roma, young couple with two kids and I cried when I found out. It was awful. Having to hear him beating her up in front of his father, him standing in front of me outlining his dick through his trousers (Think he thought single woman must be frustrated), They were, at least very clean. Young wife, about 19, used to clean and scrub all day, every day.
The other ones think nothing of throwing all sorts of rubbish into the street. Literally fridges, washing machines, sofas. Pull up in cars and empty overflowing ashtrays in piles in the middle of the pavement (yes pavement, not gutter) and throw rotting food, takeaway cartons etc out the door or car. It was truly like living in the middle of a rubbish dump.
I managed to move out just before the covid lockdown and have never been so thankful. I used to send pictures to the council and they'd send street cleaners but nothing ever done to stop the filthy habits, yet my son, 17 at the time, working long hours, stood waiting for bus and dropped cigarette butt. Fined £75. Personally I'd have told them to f.... off but he's not that type.
Regardless of what anyone says there is two tier justice in the UK. This will probably get deleted as some just don't want to hear the facts.