Barnet knife sale case puts retailers on notice

A Hendon shop owner has been prosecuted after selling a kitchen knife to an undercover 15-year-old during a Barnet Council test purchase operation.

Mustafa Deger, owner of the convenience and household goods shop Good for You at 114 Brent Street, Hendon, pleaded guilty at Willesden Magistrates Court in May. He was ordered to pay fines totalling £4,100.

The case is a public safety warning for retailers across Barnet: the legal age to buy a knife in the UK is 18, and shops are expected to have checks in place before completing a sale. Residents with concerns about a business selling age-restricted goods in the borough can contact Barnet Council Trading Standards at trading.standards@barnet.gov.uk.

£4,100 penalty after guilty plea

Barnet Council said the sale took place during an undercover operation in December 2025. Police cadets were used in test purchase visits, with the 15-year-old attempting to buy a knife from local retailers.

Deger later appeared at Willesden Magistrates Court, where he admitted the offence. The court outcome leaves the Hendon business owner with a financial penalty and places renewed scrutiny on how local shops handle age-restricted products.

Kitchen knives are common household items, but their sale is controlled because of the risk posed when blades are sold to children. Retailers are expected to challenge customers who appear underage and refuse sales where proof of age is not provided.

Operation Sceptre checks across Barnet

The test purchase was part of Operation Sceptre, a wider knife crime enforcement and awareness campaign involving local authorities and police. In Barnet, Trading Standards officers carried out a number of undercover visits across the borough.

The council said businesses had previously been visited by its Trading Standards team and given advice on the correct storage and sale of knives. That guidance included how to maintain a due diligence defence, meaning retailers should be able to show they took reasonable steps to avoid unlawful sales.

The Barnet case sits alongside wider checks on age-restricted products across London, including underage sales checks in Havering, where Trading Standards teams have also targeted knives and vapes.

For shop staff, the practical expectation is straightforward: if a customer may be under 18, the sale should not proceed without acceptable proof of age. Councils typically look for evidence that businesses have trained staff, displayed warnings, stored knives responsibly and operated a clear age-verification policy.

Knife surrender options in the borough

Barnet Council has also pointed residents towards safer disposal routes for knives and other bladed weapons. Last year, the council introduced a permanent knife surrender bin on Bunns Lane, NW7, and also used a one-day mobile bin in the borough.

The bins were part of a London-wide initiative funded by the Home Office to tackle knife crime. They are intended to give people a safe and anonymous way to dispose of knives without handing them directly to another person.

Anyone carrying a knife to a surrender bin should wrap it first in several layers of cardboard or paper and secure it with sticky tape. The blade should be completely protected and the knife should not be easy to remove from the wrapping.

Although carrying a knife in a public place is an offence, the council said it is considered reasonable to carry one directly to a surrender bin when it has been wrapped in that way.

Council warning to businesses

Cllr Sara Conway, Barnet Council’s Cabinet Member for Community Safety and Chair of the Safer Communities Partnership, said the prosecution showed the authority was prepared to act against businesses breaking the law.

“This prosecution sends a clear message, that we will not hesitate to act swiftly and firmly against any business found to be breaking the law and compromising the safety of our residents,” she said.

She described the case as another result for Barnet’s Trading Standards team and its long-running partnership with local police cadets.

“Barnet’s community safety partnership is committed to protecting our communities, and ensuring businesses operate within the law,” Cllr Conway said.

Source: Barnet Council