Thames Water has escalated its row with regulator Ofwat over the bills it can charge customers over the next five years by launching an appeal to the competition watchdog.
Britain’s biggest water supplier said it has asked Ofwat to refer its decision on bill increases to the Competition and Markets Authority (CMA).
Thames has asked Ofwat for the right to put up bills by up to 53% in today’s money by 2030. But the regulator knocked that back and put on a cap of 35%.
The decision comes as Thames waits for a court ruling on its plans for financial restructuring that will release £3 billion of emergency funding from its lenders.