I foolishly let a builder who was renovating my property, move in on the basis he would finish the work in lieu of rent after which time I would give him an AST subject to the usual checks etc. However he didn't do the work, changed the locks & prevented me from having any access to the property to get the work finished by another builder. Also he moved his son in without my knowledge or permission. Unfortunately I have two differing lots of legal advice which affect what I do nex