Just read through this thread - Buttermilkja - have you talked to any of your neighbours that still have their dish on their wall? How have they dealt with it?
As far as I'm aware this is the first time the issue has been addressed. I moved into the estate just over two years ago and there were dishes erected then. The estate was about 3 years old at that stage so I'm not sure how long the dishes were there, but nothing has ever been done in the two years+ I've been here.