I was doing some research before deciding on a heating system for my home and I came across this infographic. I like information in this format because it seems easier to digest for me.
One of the big surprises for me in this was that if you turn down the thermostat by just 1 degree, it can save your annual energy consumption by around 10%. Thats massive!
I had also forgotten about fitting individual valves to the radiators, something that is on my to do list now.
Anyway, I found it very useful, and I hope you do too, if you have anything to add, you know where to send it!