It comes as energy bills are expected to rise again this winter and, with Ofgem set to announce its next price cap on Wednesday, early analysis makes for grim reading

Regulator Ofgem will on Wednesday reveal the level of the annual energy price cap for the three months from October to December.

It comes as energy bills are expected to rise again this winter and, with Ofgem set to announce its next price cap on Wednesday, early analysis makes for grim reading