“I turned down the thermostat by one degree. I’d tried to do this the year before and struggled.

“Then I realised – close all the doors to the rooms that you’re not using, and then you’re only heating up the bit that you need.

“It was easy to do it, it didn’t feel any different from how I felt the year before.”

She has a smart meter, which she uses to see how much energy is used by everyday appliances, such as when she puts the kettle on.

She also bought an air fryer for about £35, which can cook food in 10 minutes, rather than using an oven and having to wait for it to warm up.

Another cost-cutting habit she has taken up is to walk or cycle to the gym, rather than drive, even in the winter months.

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