If anyone has a British Gas account for their gas supply, there’s a neat bit on their website where you can compare your usage with other households of the same size in a similar property in the same area.  It gives you an idea of your CO2 consumption as well.  I was pleased to see that I use a tiny amount compared to other single people in a 2 bed flat in Lewes, maybe the woolly jumpers or the insulation? Julia WaterlowTTL Energy Group