You just need to keep nagging the local authority to do something about them.
A friend of mine had a Mercedes E Class abandoned outside her terraced house, which although it wasn’t ‘her’ space was there for months and months.
The tax ran out, somebody let the tyres down, eventually somebody vandalised it scratching the panels.
Eventually, the council put a notice on it saying it was going to be removed in 7 days if the owner didn’t, and then one day it was gone.
A few weeks after that, a guy knocked on her door asking where his car was, and did she know anything. He’d been away ‘on business’ for 6 months and left his car on that street because it looked quiet and thought it would be safe. There are some selfish idiots about.