It’s lovely to hear about the hedgehogs in the garden there. Don’t worry too much about the houses. Sometimes they take a while to get used to them before they start using them. Sorry to hear that the injured hedgehogs didn’t survive, but hopefully the others will do better with the help of your supplementary feeding. Most hedgehogs will be hibernating now, although there are a few here and there still holding out. Hopefully you’ll see some again in the Spring.