It's only a bungalow so no height / wind issue ,
certificate thingy sounds like something I'll never be getting
anyone know about turning them off ?
You can't turn them off. You can only stop the power going into the grid/house. To turn them off would mean going up there and disconnecting.
If only we had somebody who knew what they were doing
Lots of flow, fan jets, rubber gloves (if you wanna feel safer) gooseneck and get the brush at the right angle. Ideally you want a nice soft brush as well.