Posting for traffic.
Turns out my loft space is shared with every other house on the terrace, there's no wall at all between the lofts. There's now a mouse infestation in our loft spaces.
Anyway, is this legal/against regulations?Can't find anything definitive online. I rent, so can't do anything about it myself so would need to go through my landlord but don't want to bring it up if there's nothing saying you can't have shared loft spaces, also I'm pretty sure it invalidates my house insurance!