Britain’s worst energy firms in terms of customer service have been named and shamed as EDF and Utilita.

The damning verdict has been issued by Citizens Advice which said customer service standards across the energy sector have fallen sharply.

It said customer service ratings across the industry were among the lowest ever between January and March and average ratings had fallen by 10.5 percent compared with the same period in 2021.

Citizens Advice was contacted for help with energy issues by…