Haven't posted on this thread before as we've been on a 2 year fixed tariff of £120 pm (4 bed semi, 3-4 occupants), but this is now ending. We're with So Energy. They've removed the option to choose another fixed deal (because, they say, prices are likely to fluctuate for the foreseeable i.e. rise), and when your current fixed tariff ends, you go onto their Flex rate, which they say is 'relatively low'.
Just got the quote, and our new monthly DD will be £196, which doesn't seem too bad compared to the rises some people have had. Still, £76 extra a month to find though, not an inconsiderable amount.