If the first reading we have for you is wrong we may be able to change it.
For electricity, if the difference between an estimated start reading and your actual start reading is more than 250kWh we can get in touch with your old supplier and ask them to change the reading.
For a metric gas supply the difference needs to be at least 108 units and for imperial 53 units.
We'll need your help to do this, that's because we can't just change your start reading. We don't want to risk you being charged twice for energy. We'll ask you to send us another reading or even send us photos of your meter showing the readings. Once we've got these we'll get in touch with your old supplier so that we're both using the same readings.
If the difference is too small to change the reading, there's nothing to worry about you still won't be charged twice for your energy we'll just use the estimated reading and so will your previous supplier.