Trading Standards and underage sales: how the UK is enforcing vape age laws

The minimum age to buy vaping products, and tobacco products, in the UK is 18. This is set out under the Children and Young Persons Act 1933 as amended, and it applies to every retailer, whether that is a supermarket, an independent vape shop, a petrol station or an online retailer shipping to a UK address. It is a criminal offence to sell vaping products, including nicotine-free e-liquid and devices, to anyone under 18.

Enforcement of that law, though, sits with local authority Trading Standards teams, and how it plays out on the ground is less widely understood than the headline age limit itself.

Who actually enforces the age limit

Trading Standards is not a single national body. Each local council in England, Wales and Scotland runs its own Trading Standards service (Northern Ireland has an equivalent through its district councils), and these teams are responsible for a wide range of consumer protection work, of which underage sales of vapes, cigarettes and alcohol is one part. Councils generally run a mix of:

• Test purchases, where a young-looking volunteer, usually over 18 but with a youthful appearance, or in some schemes a genuine under-18 volunteer supervised by an officer, attempts to buy a vape to see whether the retailer asks for ID.
• Responding to complaints from parents, schools, teachers or members of the public about a specific shop believed to be selling to under-18s.
• Routine inspections that check age-verification policies, till-prompt systems and staff training records.
• Joint operations with police, particularly where underage sales are linked to other issues such as unregistered or non-compliant stock.

Because funding and staffing levels vary significantly between councils, the intensity of enforcement is not uniform across the country. Some areas run frequent test purchase operations, others rely more heavily on complaint-led investigation.

Challenge 25 is a retailer policy, not the law

Many shops display “Challenge 25” signage, which asks staff to request ID from anyone who appears to be under 25, not just under 18. It is easy to assume this is itself a legal requirement. It is not. The legal minimum age is 18; Challenge 25 is a voluntary retailer policy adopted as a buffer, on the reasoning that judging someone’s age visually to within a year or two is unreliable, so asking for ID from a wider age band reduces the risk of accidentally selling to someone under 18. A retailer that only checks ID from people who look under 18, rather than under 25, is not automatically breaking the law, provided they do not in fact sell to anyone under 18. But many retailers, and most major supermarket and convenience chains, adopt Challenge 25 as standard practice to reduce that risk.

Proxy purchasing

A separate offence covers proxy purchasing, where an adult buys a vape on behalf of someone under 18. This matters because retailers can do everything right, checking ID at the till and refusing a direct sale to a minor, only for an adult in the same group to buy the product and hand it over immediately outside the shop. Proxy purchasing is illegal in the same way it is for alcohol, and Trading Standards campaigns increasingly target this behaviour alongside direct retailer checks, since underage disposable vape use was frequently traced back to proxy purchases rather than a retailer knowingly selling direct to a child. That underage appeal, discussed in our piece on the UK disposable vape ban, was one of the central reasons disposables were banned outright rather than simply policed more heavily.

What enforcement action can look like

Where a test purchase or investigation finds a retailer selling to someone under 18, councils have a range of tools available rather than a single fixed response. Depending on the severity and whether it is a repeat issue, Trading Standards can issue a formal warning, require a retailer to complete additional staff training, issue a fixed penalty notice, or in more serious or repeated cases pursue prosecution through the courts, which can carry a fine. For sales of illegal or non-compliant stock, such as disposables sold after the June 2025 ban or e-liquid above the 20mg/ml cap set out in our guide to UK e-liquid rules, officers can also seize the stock itself. We are deliberately not quoting specific fine amounts here, since penalty levels and sentencing guidelines can be revised and vary by case; anyone facing an actual enforcement matter should check current guidance directly from GOV.UK or their local Trading Standards service.

What responsible retailers typically do

Shops that take age-verification seriously tend to share a similar set of practices, regardless of size:

• Till prompts that require staff to confirm an ID check before a vaping product sale can complete.
• Regular refresher training for staff on accepted forms of ID.
• A clear refusals log, recording when a sale was declined due to lack of ID.
• Signage at the point of sale stating the legal age and the shop’s own ID policy.

What parents should know

For parents, the most practical takeaway is that the law already sets a firm floor at 18, retailers face real consequences for breaching it, and the disposable format most associated with underage use is no longer legally on sale. That does not mean underage vaping has disappeared. Proxy purchasing, informal sharing between older and younger teenagers, and non-compliant sellers operating outside the regulated market remain the more likely routes by which under-18s access vapes now, which is why enforcement attention has shifted toward those areas rather than solely toward shop counters.