There's a bit of land adjoining us that doesn't appear to be registered on the land registry, and we could do with finding out who (if anyone) is responsible for it. It's a small strip of land between adjoining owners with a stream running down it. My understanding is that it is normally assumed that the land ownership goes to the middle of the stream, even if it is not clearly defined on land registry plans. Is that right? (From what I can tell from the title deeds there is nothing specific about it.)