There are lots of variables involved here.
Summer v Winter months
Type of heating systems
Providers - type of contract you are on
Double glazing
thermostats on the radiators etc etc
Flats have the benefit of being sandwiched between other flats ( better insulation )
Is your heating system the same as the flat , if not you might be misusing it - as crazy as it sounds my mums air flow ? heating needs to be kept on all the time for optimal economical performance , if I kept mine on all the time I'd be on the streets very quickly.
There is a slim chance that the meter readings could be wrong but this is rare.
Another thing , as you were on a meter in your old place were you in arrears ?
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