Ofgem has ordered energy firms Utilita and Scottish Power to meet their obligations to protect customers following a "series of apparent failings". Provisional orders issued to the firms follow Utilita's lack of support for vulnerable customers and Scottish Power's debt repayment plans, the regulator said.
Ofgem is due to publish its findings from a full market review into how suppliers make sure they are supporting customers struggling with bills.
Ofgem enforcement and emerging issues director Cathryn Scott said: "These orders to Utilita and Scottish Power are a clear signal to suppliers about the vital importance of protecting customers.