Have never been sure of UW other than I knew someone who kept plugging their stuff – got v annoying v quickly so I avoided him.
Have been with EON for nearly 3 years – had some recent issues which were collectively both their fault and ours – which left us £800 outstanding. However, their customer service folk are actually pretty decent, even more so their managers who (for us anyway) were genuinely figuring our how we could save money blah blah. Pleasantly surprised in the end.
Beware paying £46/m for elec and gas. I might be wrong but I can’t see how that’s possible unless in a 1-2 bed flat with very economical use. We’re expecting to spend about £850 this year on just elec (3 bed house).