Assignment of outstanding charges to your new supplier
You might become liable for an old energy bill where the supplier has assigned the outstanding debt to your new supplier. If you failed to pay the old supplier within 28 days of the charges being due, it may assign the debt to your new supplier. If your new supplier agrees, it can take over the debt where:
•it has become due to the first supplier;
•it had been demanded in writing; and
•you were notified that the charges might be assigned.
However, it is more likely that the transfer will be blocked by a supplier within the framework laid down by Standard Licence Condition (SLC) 14.