How do I improve on the Building Regulations minimum standard for heating control?

The basic control principle of timer and room thermostat was developed over forty years ago. Despite changes in manufacturing methods this has not changed. Nowadays, there are far better controls available such as programmable room thermostats -These combine time and temperature control in one product. They also allow for control to different temperatures at different times of day. Honeywell Home thermostats THR870 and THR872 use the advanced control functions of TPI control as well as temperature overrides for better performance.