Don't fill the kettle full unless you need to. If everyone boiled just enough water for their cuppa, the energy saved could power over three-quarters of the UK's street lights.

Stay cosy: drawing the curtains at dusk keeps the cold out and heat in.

Turn off the lights when you leave a room.

Turn down your central heating thermostat: lowering the temperature by just a degree can cut ten per cent off energy bills (ref: World Wildlife Fund).

Put lids on pans when cooking to conserve heat and cook food faster.

Wash up by hand rather than using the dishwasher.

Close the fridge door: for every minute left open it takes three times as long to cool down (ref: Energy Saving Trust).

Defrost your fridge and freezer regularly to maintain efficiency. Allowing space for air to circulate will also help them to run more efficiently.

Unplug mobile phone chargers when not in use - 95 per cent of the energy they use is when the phone isn't plugged in.

Turn electrical appliances off at the mains rather than leaving them on standby. Eight per cent of electricity consumed at home is from appliances that we aren't even using (ref: Climate Care).

Wash your clothes at lower temperatures (40 degrees or below), and always ensure you have a full load.

Use hot water sparingly: take a shower rather than running a bath.

Simple Fuel Savers

Avoid short trips: a cold engine produces 60 per cent more fuel than when warm (Energy Saving Trust).

Drive in the highest gear you can without labouring the engine. A vehicle travelling at 37 mph in third gear uses 25 per cent more fuel than in fifth (RAC).

Slow down! At 70 mph you use up to 30 per cent more fuel than at 50 mph, so obeying the speed limit isn't just good for public safety, it's fuel-efficient too (ref: Cutting Your Car Use). The most economical speed is 40-45 mph.

Drive carefully: by applying light throttle and avoiding heavy braking you can reduce fuel use.

Remove roof racks and any other unnecessary weight from the car.

Switch off your engine whenever it's safe to do so, especially if stuck in traffic for more than a few minutes.

Take care of your car: service it regularly and check the tyre pressure - this can make a huge difference to fuel consumption.

Get the emissions and catalytic converter checked: 90 per cent of badly polluting cars can be retuned at a garage within 15 minute (RAC).

Use air conditioning sparingly.

Consider a car share.