Germanshepherdsmum
Didn’t you report her Hurdygurdy?
Yes. But after the first instance, nothing seems to have happened sadly.
She'd obviously left the balcony door open for the first cat (but no food or water) as it managed to make its way to my daughter's balcony (2nd floor). The RSPCA became involved, accompanied by the police, who broke into the flat in case the neighbour was unwell, and the cat was rehomed. The RSPCA took her to court where the ban was imposed.
Not much later than that, two cats appeared on her balcony (no sign of her again) and one fell from the balcony. It got up and ran off, never to be seen again, so hopefully it wasn't badly injured.
RSPCA were called again, but as far as my daughter knows, took no action.
I was at my daughter's a few months ago, and I could hear a cat miaowing. As there are only two flats on that floor, and my daughter doesn't have a cat, the assumption is that the neighbour has/had yet another cat. It's not been heard again though.
If the neighbour does another disappearing act (this happens quite regularly), and if there sounds to be a cat there, the RSPCA will be called again.