@SarahC

so what is your consumption? The average is said to be 2,900 kWh per annum. Mine was 2700 and now about 1900. Large semi, most mod cons but no instant hot water boiler! Gas central heating cooking and winter water heating (13,000- 18,000 depending on winter).

I just went round with the meter to check items individually, then once measured used the keep/replace/dispose decision making process. If the utility justified the cost items were kept, even on standby! Otherwise ………….

You say your usage has gone up. Do you mean the actual consumption in kWh or your monetary expenditure?
Don't shoot me, I'm only the piano player. I DON'T work for or on behalf of EON.Next, but am willing to try and help if I can. Not on mains gas, mobile network or mains drainage. House heated almost entirely by baby dragons.