Here's an eco home improvement that will also save you money. A rainwater harvesting system, in the form of a simple rain barrel, will allow you to collect rainwater and reuse it to water your garden or clean your car. Some more advanced systems can be plumbed in, so water can be used for your washing machine, shower or toilet.

As well as being fantastic for the environment, adding one to your garden will allow you to cut your water bills. Rainharvesting Systems suggests you could realistically expect to save between 40% and 50% on your water bills, if you opt for a professional rainwater collection unit.

Of course, you'll need to consider the initial outlay, which could be as little as £70 for a basic water butt or as much as £3,000 for an entire domestic rainwater harvesting system.

Eco-friendly ideas for the home that could save you money