French energy goliath EDF is charging households across the United Kingdom almost two and a half times more than those on the other side of the Channel.
Électricité de France customers in Britain have their annual energy bills capped at £1,971 under a system overseen by Ofgem - who regulate the UK's energy. But French householders on their country's regulated tariffs only face bills in the region of €950 (£803).
And with Ofgem expected to bring further rises to the price cap in October, thought to be in the region of 80 per cent, French President Emmanuel Macron has told the state-owned business that they can only increase bills by 4 per cent.
