another option
I put in a Wood burner last winter. cost of the Burner £650 + £450 to put in in.
Cost of wood for last winter £0 It all came from timber rescued after a storm.
The burner is centrally mounted in an old chimney breast. Heats the whole house as the walls get warm.
Gas bill before Wood burner £1050/yr
Gas bill in last 12 months £250.
Should break even this year and I still have around 2yr worth of wood stacked up outside.
My guestimates are that I'll use around £250 worth of wood a year when my current supply gets run down.
Seems to work for me.