Frequently asked questions

Here is a selection of questions we are frequently asked about energy suppliers, energy tariffs and the switching process. 
Energy saving lightbulb

Cut your energy bills with Which? Switch

The average saving when switching gas and electricity is £204 - compare gas and electricity tariffs now to find the best deal for you.

This figure is the average estimated annual saving for customers who applied to switch suppliers through Which? Switch between 1 January 2014 and 31 March 2014.

We would appreciate your feedback on our site and how we can improve our service to you. Please complete our survey, we read every comment and it only takes minutes. Click here to start.

Preparing to switch FAQs

Switching eligibility FAQs

Switching process FAQs

After you've switched FAQs

Which? Switch FAQs

Energy supplier FAQs

Tariff FAQs

Which? works for you