House is very old and rambling, and at some point was divided up for two households. We bought it as one property (council tax is for one property too). But there are two electricity meters under the stairs that each supply different bits of the house and different outbuildings. We supply meter readings for both meters and pay two bills, I know that's barking and we are currently trying to get them removed and replaced by a single meter but it turns out that's actually more complicated than you might think 
But it's just occured to me - will both meters get the energy discount applied to them?