none at all that I'm aware of. We knew that the event wouldn't be entirely silent, what with people singing(!) along - what we also know is that it's amplified sound, and particularly bass, that carries through the valley from the Bulverton hill (or Betsy's Knapp, to give it its proper name!)and gets us into trouble. As there was no amplified sound, and in particular no bass, it didn't constitute a noise nuisance. I even got the Witchmen to dampen their bass drum so that it wouldn't carry unnecessarily.