Dave, When I phoned E.ON, They said I could stay on e10 but it will cost me £100 more at least per year, After the deadline date of the 13th September. But if I change to e7, it will be £40 cheaper. Then went on to say, when they install the new smart meter I would save even more,! It felt like E.ON were trying to force me into getting a smart meter fitted!. Then the fella started running on about how to use my storage heaters!! (as if I don’t know lol!), So that is when I decided to switch. The six suppliers what will fit a E10 meter are listed under the tab at the top of the page. Also a list of suppliers that support E10, That is how I decided which one to swap to.