There’s a good population of them round here in wales, being mainly nocturnal most perple don’t see them or realise they are about. A few days ago I went to the back door to go and shut the chickens away and a polecat ran across the doorstep and under my shed, it turned round and stared at me. I told it to make itself useful and go catch some rats and mice down the pens!
I have a soft spot for the polecats and they have caused us no problems so far.