Yikes, our EDF 3 year fixed deal ends in September and they've just done a review and bumped our DD from £113 to £148 pcm, I guess that's due to the end of the deal as we seem on target at £113? They've also refunded £270 which makes it look like £113 is more than needed.
The MSE Energy Club website reckons when the deal ends we'll be paying £178 (although the 1 year fixed deals are showing £144(EDF) up currently).
We were paying £74(?) for the previous 3 year deal for comparison. I'll ask them to reduce the current DD back and see where we lie in September.