Turn all appliances off at the plug, not just put them on standby.
You can use timer plugs to help turn them off when you don't need them.
By turning the thermostat down even by one or two degrees can save a lot of energy over the year.
Washing at 30 degrees can really help reduce the energy used when you use the washing machine, compared to using it at 40 degrees.
Heat rises, so keep it locked in to your home. By insulating your roof you can stop heat escaping and help reduce the amount of energy you need to use to heat your home.
Use a washing up bowl rather than a running tap; only fill the kettle with as much water as you need every time you use it; try timing your shower and aim for a minute less.
Draught-proofing your home will help keep the heat in and those cold winds out. Windows, doors or cracks in floors and skirting boards can all let those pesky draughts in.