I read about the Redflek Radiator Reflectors in Martin's email from money saving expert.com.Unfortunatly I was not one of the lucky 1000 to claim a free pack.I thought I would give them a go and went ahead and bought a pack. It has cost £13.00 to do the whole house. And they were so easy to fit. I have to say it is really nice and toasty even after turning the thermostat down.
I will keep you up to date on how we get on with them.