I live in a mid terrace house and each house has their own chimney on the right side of the house....they are not shared with neighbours. When I was in my attic recently I noticed rain water running down the adjoining wall which forms the back of my neighbours chimney. Does anyone if my neighbour is responsible for repairs as it's her chimney or if it's mine because it's leaking down my wall. Would be very grateful for any advice as can't find legal position anywhere. many thanks