Currently with M and S . We are below average users for both gas and electricity. I deliberately overpay and then receive credit ( approx £ 300 ) in April or thereabouts. I know that we are still paying too much to this provider ( £ 200 a year ? ) and wonder if other colleagues can recommend alternatives. Had a long ish conversation with first : utilities last night but I was not won over by the quality of the call. Any comments / advice would be welcome. I have approached M and S about the current tarif. It has alerted me to a one year fix which would give me £ 18 off a year ! plus £ 40 vouchers. Told that they have offers all the time but I need to check the website routinely . ( My last bill ( weekend ) informed me that I could save £ 200 approx by switching tarif - when I asked to do this M and S said it had only been available for a couple of weeks and finished mid December. Yes - well not very helpful !