Staggering number of Brits believe they can solve a crime, build a house solo or install a gas boiler, survey shows

ONE in 20 adults think they could build a house using only online tutorials as reference.

The staggering overconfidence of the nation was revealed in a poll of 2,000 adults, with many thinking they can solve a crime like a detective, win a pub quiz solo, and even navigate to a new destination without a map.

SWNSWhen it comes to gas, experts say home improvements should be done by professionals[/caption]

AlamyMany Brits reckon they could win a pub quiz solo[/caption]

GettyOverconfident Brits also fancy their chances as a detective[/caption]

Nearly a quarter (24 per cent) have been called out in the past for making such an overconfident statement.

With one in 20 (five per cent) even thinking they could successfully install a gas boiler – a task that should only be taken on by a qualified professional.

The research was commissioned by Gas Safe Register, which has teamed up with Nick Knowles ahead of Gas Safety Week 2025 to remind people not to be overconfident with DIY when it comes to gas appliances.

TV host and DIY expert Nick said: “Having confidence is great, but in the right circumstances.

“Through my time presenting, I’ve seen many instances where that ‘do it yourself‘ mentality has worked.

“But being overconfident with certain elements of home improvement – particularly when it comes to things like gas or electrical appliances – can be deadly, probably illegal, and should only be done by professionals.”

The study also found 10 per cent think they’d make it as a successful online influencer if they felt like it, and seven per cent said they could write a best-selling novel.

It also emerged men are generally more overconfident than women.

Twice as many of them considering themselves funny enough to smash a stand-up routine made from their own comedy material.

With 27 per cent of guys confident they could navigate somewhere without a map or GPS, compared to just 12 per cent of females.

Almost half (48 per cent) believe men are the most confident in everyday life, compared to just eight per cent who believe the same of women.

Of those who do over overestimate their abilities, two in five (40 per cent) say it’s to specifically woo a romantic interest.

And almost three in 10 (28 per cent) tackle even potentially the trickiest of tasks for social media bravado.

With over a quarter (26 per cent) doing so to avoid paying a professional to save money.

In terms of DIY, 32 per cent reckon they could change a car battery without professional help, and nearly one in 10 (eight per cent) would give building an entire garden office a go solo.

Just under six in 10 (58 per cent) also fear people are generally overconfident when it comes to home improvements.

As 38 per cent of adults say they’ve regretted trying to tackle a task themselves they weren’t qualified to take on.

And 51 per cent wisely said, ‘confidence without knowledge is risky’, according to the OnePoll.com figures.

Rob Denmann for Gas Safe Register added: “We can all have a bit of over-confidence when it comes to DIY, and may let a ‘give it a go’ mentality take over.

“That’s fine if it’s putting up some shelves or giving the walls a fresh lick of paint.

“But when it comes to working with gas – from installing a new gas cooker or attempting to fix a temperamental boiler – the consequences can be dangerous.

“The number one rule is simple – leave it to the experts.

“There are over 130,000 Gas Safe registered engineers all over the UK, who are legally qualified, knowledgeable and equipped to handle gas issues in your home.

“Using these experts to complete any gas related jobs, including an annual safety check, will help look after your home, friends and family.”

Over a quarter of Brits overestimate their abilities to avoid paying a professional to save money including building a house

SWNSOverconfident Brits think they could install a gas boiler[/caption]

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