As you will see from some of the posts and comments on this site, there used to be a Lodger advice service.
This was closed down a few years ago as, due to my increasing workload, I no longer felt able to support it.
If you need advice though I may be able to help you through one of my other services. You can read about these here.
Otherwise, you may find that one of the services listed here will be able to help you.