JTurnet

I own a one bedroom house with its own front door and integral garage. Once in the front door, to get to the one level living accommodation you climb the stairs. My house is the only one like this in the development. Under a large part of my property are 2 parking spaces for 2 neighbours who rent. I do not know who owns the properties. One neighbour repeatedly stores things and uses the space as a open shed! There is a gas bottle, an empty (I hope) petrol can, old furniture etc. etc. These are mainly against my garage wall, (making it awkward to read my gas meter) but under my bedroom, kitchen and lounge floor. I have mentioned my concern to the offending person in the past but without knowing for certain what my rights are I have not taken it further. Thank you for any advice.