'twould be difficult for me to get across and back, but I'll give it a go.
What happens exactly when the music police attend the scene?
An outline to be prepared for any outcome would be good.
Have you contacted local/national papers? They might see it a a bit of copy to fill up with when they are not reporting "the war".
Any Cat's solicitors? If someone can come up with hard copy, chapter and verse of the current law then there will be egg on the faces of the weapons inspectors.