I suspect that my Son is paying for Gas to both his and upstairs flat. He lives in an old Leeds Terrace House which has been converted into 2 flats. The bill for end of Nov toMarch was reallt high - in that time he was away for a month.
On checking last week I could only find 1 gas meter which had an outlet pipe into his property & then continued into the flat above.
I have contacted Gas Supplier who say I need to take it up with Landlord & also ask other flat if they have a Sub Meter?? They are away & letting agency have not got back to me.