if you use an eco stove/fire and less than 20% water content renewables hardwood logs then its very eco .. of course as london doesnt really allow dirty polluting lorries etc in to inner ring then they wont be polluting so much either.
Current Car: Hyundai Kona Premium EV...2 way 40kg hoist
Last Car: Toyota C-HR Excel Hybrid...4 way 80kg hoist