Are there any sites that will tell me the cheapest gas and electric prices, without me having to put my current supplier details in? as i do not have a current supplier, i will be moving into a new house.
Just pick a name at random for the current supplier and then estimate the monthly bills. This will still show you the cheapest supplier based on someone with your estimated usage. They only ask for your current supplier so they can show how much you'll save by switching.
Once you move in you'll need to find out the curret supplier though so they can arrange the switch you want