A study has revealed Brits are wasting a combined £4.4 billion each year due to leaving the lights on unnecessarily at home.
Whether it's due to a fear of the dark or simply forgetting to turn the lights off, Brits could be saving themselves a tidy sum, just by flicking a switch, research from Utility Design has revealed.
Forgetting to switch the lights off has another impact too - it is also the number one cause of arguments for British couples. This is followed by not doing the dishes (65 per cent) and leaving clothes and shoes on the floor (62 per cent).
With an estimated 4.7 million leaving at least one light on before going to bed, an average eight-hour period of sleep would end up costing a combined total of £3,619,000 each night - an amazing 8,985,600 kg of carbon dioxide emissions (or to put it in a more understandable context, the equivalent of 15 flights round the world), or £281.05 per person each year.
With 10 per cent of us leaving lights on when going out of a room, industry averages could mean there is £14,950,000 of energy being wasted across the UK each day, resulting in 37,440,000 kg of carbon dioxide emissions - this would end up costing each user £836.66 a year.
It was also revealed that 21 per cent of Brits would regularly leave lights on when going to work, with carbon emissions being comparable to 45 flights around the world.
Interestingly, the worst offenders are millennials, with 32 per cent from the 18-24 age group admitting they would leave the lights on when they were not at home – in comparison, only 12 per cent of those who were in the 55+ group did this.
The worst culprits were found to be in Newcastle, Manchester, Nottingham, London and Cardiff.