To make the switch, you just need to provide the relevant information to the new supplier who arranges the transfer.
If you used a price comparison website, you will have entered much of the information already and can complete the process online.
You should be directed from the comparison site to your new supplier’s website to set up your account. You can also set up your account with the new supplier by phone.
Just before the changeover you are asked for your meter readings, probably by both suppliers. This is to make sure your old and new suppliers know how much electricity and gas to charge you for.
You always have a 14-day cooling off period during which you can cancel your new contract if you change your mind.
Once the cooling off period is over, it takes about 21 days for the transfer to your new supply to be set up.
If a doorstep salesperson tries to persuade you to switch suppliers, don’t feel pressurised into signing a new contract straightaway. Research other options first.
Salespeople are not allowed to tell you that their offer will be withdrawn if you don’t sign up immediately.