The entire premise of your comment is false, since energy retailer margins are sub 5%. Considering the UK government has directly been engaged in numerous schemes which have dramatically increased the wholesale price of energy, a 5% cost saving won't even help anyone. Prices are rising by 4x that yearly with the money printers and war machine turned up to 11.
I can’t speak to the UK directly since I live in the USA, but all of my experiences with privatization of services has been awful. I lived in one city that handled trash and recycling as a part of your property taxes. It was a good service. No complaints. Where I live now, you have to find your own trash and recycling service. Prices are higher and the service is far worse.
