Can I switch if I'm renting a property?

The only person who can switch supplier is the person who's name is on the gas or electricity bill. If you pay your landlord for gas and electricity, or both, and the bills are in the landlord's name you will have to ask your landlord to switch  to a cheaper deal. However if the gas and electricity supply is in your name and you are responsible for paying the bills then you should be free to switch supplier. However before you switch you should check your lease or rental agreement as well.

When you switch gas or electricity supplier the switch is made without affecting your current supply and uses the existing pipes, cables and meters.