I have been with ForTheLandlords for, i think, just over a year.
My overall experience has been extremely positive and very professional, this stood out to me when, after a year of working on a sizeable project together all rooms were let within a week (or thereabouts).
I have already refereed family to the service and I'm set to do 2 more projects myself.
We only work with people we have met, and it would be nice to see you. Of course, you need to own at least one BTL property already and it needs to be in an area we are operational in.