By Graeme Murray A man has shared an incredible energy hack to help Brits save money on heating – and all you need is a roll of tin foil. Carl Alexis, from Swansea, uploaded the hack on TikTok (@carlosmanwelly). The IT worker, who first heard the tip from his grandmother, had all but forgotten about it until the recent rise in energy bills got him thinking about ways to save money. He said: “I was looking for ways to conserve energy due to the rising costs. I can feel as I pass the radiator, more heat coming from it. To save money on energy bills, simply place some silver foil down the back of…