Hi, The Bills were fine ( £50 or so a quarter) for the first few months, ( NOT estimated either ) then we had it rocket to £1900!!
We have done the go round the appliance route.. All of ours are fine, however its when we plug things into certain sockets its sets the meter into overdrive.
There are 2 sockets downstairs now we have found that dont even work!.. and then one socket downstairs thats dodgey and one upstairs.
We actually let our own house out ( its to small for us) and rent this larger on (alougth its not that big!) and we have a PAT/electrical test every year in our own.. I thought it was the norm.. Obviousley not!
When we had a meter accuracy test ( before we knew the problem) The guy that came to take it of said we had used the equivlent of Hotel or Business warehouse!!!
I just getting fed up of it all, and Ive still not had the bloody offical electrian round

The 'unoffical' electrian said the rate the meter was going round with the one thing plugged into the dodgey socket you'd of thought that every single light,appliance,kettle,mi crowave, immersion, Heaters were on!!!
We are careful about energy use ( hence our bills being low for the majority)