When this was first sold to me it sounded like a dream - get paid every time your tenants use gas or electric, make profit on their usage, whilst keeping bills low for them as UW's rates are so competitive?? No brainer.
What a bloody nightmare they are. Their systems are entirely geared up for the standard owner occupier, the home owner looking to save a few pennies, NOT for the landlord looking to make his or her life easier. The change over has cost hours and hours sorting out bills that are simply wrong, with no reason or apology. They take money out of your account without permission and when you take cancel the DD, take it from credit cards! They charge a standing charge when properties are empty even if there is no useage, creating more paperwork and costing money for no service. The bill monthly, creating more paperwork for no reward. They are incapable of updating accounts at any other time than at the end of the month. They do not pay you unless you sign up a new customer every month.
Don't even think about it!!