"Greyback uses a variety of hideouts. The warehouse in Sheffield is one of them, but he's unlikely to be there after we tore the place to pieces just a few days ago. There's a Death Eater safehouse on the Isle of Sheppey. I would look there first. He loves this shithole. Might get nasty. Mainly Snatchers and werewolves hole up there. I've already made blueprints of the house, but Potter hasn't given it much thought yet because it's not exactly crawling with suitable Exit candidates."