[OJFord]

I used to have it; it's a technically nice system when working, but the problem is having no choice of provider, no control when it goes wrong, etc.

Makes sense for flats (or dense area of many leasehold houses, if that happens) where there's a management company holding your throat anyway, but otherwise I can't see how it works unless perhaps it was provided by the council (similar disadvantages, just more trust/better outcomes from complaints).