Housing and Planning Bill

May I ask for some clarification? When I sat as a magistrate, we had a case of a tenant whose landlord stopped taking the rent; it was never collected. After some years he was able to come to the court and get the right to buy the property, because, technically, it was abandoned. At the time this seemed to me quite a complex procedure and I wonder where it fits in—whether the tenant is disadvantaged by this amendment, or the owner of the property. I am not sure what the amendment means.