you must do checks on any land to see if its registered, if it is you cannot just fence it off and claim it, if its not reg then you have a right to make a claim but must take steps to find the owner,reason i know is i have had two areas that i own and are reg to me yet some fecking tramps tried to claim as theirs, they both have ground surrounding my land and tried to claim them so they could make a road onto their land , well now i have fecked them off and none of them have access to their land.