we too have thermostats on every radiator so like now, when DS is away at Uni, his radiator is turned off. We have a 7 day programmer so the heating comes on earlier Monday to Friday, a bit later at the weekends, and generally it comes on about 4 ish when I get home and goes off at about 10. As the house is extremely well insulated, it is till cosy when we go to bed. The bedroom heating comes on for an hour in the morning, at getting up time, and is then off all day until about 8pm, then it too goes off at 10. We dont have any cold spots in the house, leave doors open to circulate heat, and also have a gas fire ( 80% efficiency) to pop on if it gets nippy on a Sunday afternoon while reading the papers. Just changed fuel supplier so hoping for better bills.