Alcohol Influencer Marketing UK 2026: CAP Code Section 18, the 25% Age-Gating Rule and the Portman Group Code

TL;DR. Alcohol influencer marketing in the UK is governed by CAP Code Section 18 (Alcohol) and the Portman Group code, on top of the ordinary ASA disclosure rules, which together make it one of the most tightly regulated creator verticals there is. The two rules that decide most campaigns are concrete and worth memorising. First, age-gating: CAP Code rule 18.15 says no medium may be used to advertise alcohol if more than 25% of its audience is under 18, so a creator whose audience is more than a quarter under-18 is simply not a lawful medium for a drinks campaign, however good their content. Second, the on-screen age rule: rule 18.16 requires that anyone shown drinking, or playing a significant role in the content, must neither be nor seem to be under 25.

I run Collabios, a two-sided creator marketplace, and drinks brands are among the most careful advertisers on the platform precisely because the downside of getting it wrong is public and expensive. The pattern that separates the brands that stay clean from the brands that get an upheld ruling is not creativity, it is discipline: they check the creator's real audience age split before they book, and they brief the content rules before anyone films. This guide gives you that discipline as a checklist.

It is written for both sides. If you are a drinks brand, it is a compliance-and-planning framework. If you are a creator, the section near the end explains how to take a drinks brief without exposing yourself to an ASA ruling, starting with the uncomfortable first step of knowing exactly how much of your audience is under 18.

Alcohol marketing is built around keeping the message away from under-18s and away from anything that reads as youthful. Two CAP Code rules carry most of that weight.

Rule 18.15 (the 25% media rule). The exact wording is that no medium should be used to advertise alcoholic drinks if more than 25% of its audience is under 18 years of age, and marketing must not be directed at people under 18 through the selection of media or the context in which it appears. Applied to influencer marketing, the "medium" is the creator. If a creator's audience is more than 25% under-18, that creator cannot lawfully carry an alcohol ad, full stop. This is why audience-age data is not a nice-to-have in the drinks vertical, it is the gating decision. A creator who self-declares "mostly adults" is not enough; you need the actual split.

Rule 18.16 (the under-25 on-screen rule). People shown drinking, or playing a significant role in the content, must neither be nor seem to be under 25. Note the "or seem to be": a 24-year-old is out, and so is a 27-year-old who reads as much younger on camera. In practice this means the creator, and everyone visible holding or consuming a drink, should read clearly as 25-plus. It is a deliberately conservative buffer above the legal drinking age of 18, precisely to avoid any ambiguity about depicting under-18s with alcohol.

These two rules together are the reason manual vetting matters so much here. On a marketplace where creator audiences are checked rather than self-declared, a drinks brand can filter to creators whose real audience is 25%-or-less under-18 and who present as clearly adult, before a penny is spent. Getting this wrong is not a content-tweak problem you can fix after publication; it is a "this creator was never eligible" problem.

Beyond age-gating, CAP Code Section 18 restricts what the content itself can claim or depict. These are the rules most likely to catch a creative concept that felt harmless in the brief.

• 18.1 (socially responsible). Marketing must be socially responsible and must not encourage excessive or irresponsible drinking, nor exploit vulnerable groups. A "down it" challenge, a chugging bit, or content that makes heavy drinking look like the point all breach this.
• 18.2 (no confidence or popularity claims). Marketing must not claim or imply that alcohol can enhance confidence or popularity. "A few of these and I'm ready for anything" is exactly the framing this rule bans.
• 18.3 (not essential to social success). Marketing must not suggest alcohol is essential to social or relationship success, though portraying it as sociable is permitted. You can show friends enjoying a drink together; you cannot imply the night, or the friendship, depends on it.
• 18.5 (no seduction or attractiveness). Marketing must not link alcohol with seduction, sexual activity or sexual success, nor imply that alcohol can enhance attractiveness. Any "this makes you irresistible" angle is out.

The through-line across all four is that alcohol can be shown as an ordinary, sociable, adult product, but it cannot be sold as a route to confidence, popularity, romance, or as something to consume to excess. When you brief a creator, brief these rules explicitly, because a creator working in good faith will often reach for exactly the "gives you confidence" or "makes the party" framing that Section 18 prohibits, simply because that is how drinks are talked about casually. The brief is where you head that off.

The Section 18 rules resolve into a short list of pass/fail patterns. The table pairs the compliant version against the non-compliant version for each common scenario, so a brand reviewer or a creator can pattern-match a concept in seconds. Every row reflects a specific CAP Code Section 18 rule.

The most common avoidable failure is the first row: booking a creator whose audience is too young, which is a breach no amount of careful content can fix. The second most common is the confidence or attractiveness framing (18.2 and 18.5), which slips in through natural language in a script. Catch both before filming and you have removed most of the risk.

On top of the ASA and the CAP Code sits the Portman Group, the alcohol industry's self-regulatory body. It operates its Code of Practice on the Naming, Packaging and Promotion of Alcoholic Drinks, first published in 1996 and updated six times over roughly three decades, and a separate framework covering alcohol marketing and sponsorship. Where the CAP Code governs advertising in general, the Portman Group code focuses on how drinks are named, packaged and promoted, including the responsible-marketing dimension that touches influencer activity.

Two Portman Group services are genuinely useful to a drinks brand planning a creator campaign. The Advisory Service offers free, confidential advice on marketing and packaging before it goes live, which is the single cheapest form of insurance in this vertical: you can run a concept past it and get a steer before you have committed budget. The Independent Complaints Panel adjudicates complaints under the code and publishes its rulings, which, like ASA rulings, become part of the public record. The practical move for any brand new to alcohol creator marketing is to use the Advisory Service early, treat its steer as a design constraint, and only then brief creators.

The interaction to understand is that a drinks creator campaign can face two separate complaint routes: an ASA complaint under the CAP Code and a Portman Group complaint under its code. Compliance with one is not automatically compliance with the other, so build to both. This is heavier governance than almost any other consumer vertical, which is exactly why alcohol sits alongside gambling and HFSS food as a specialist regulated category rather than a general one. For the food-restriction analogue, see our HFSS food advertising compliance guide.

None of the Section 18 rules remove the ordinary disclosure obligation. A paid or gifted alcohol post is a marketing communication and must be obviously identifiable as such under CAP Code Section 2, which means an "Ad" label at the start of the caption (and, ideally, the platform Paid Partnership tag as well). Gifted bottles sent to a creator in exchange for coverage are a material connection just like cash, so they carry the same "Ad" or "Gifted" disclosure. The full disclosure framework, including the five-pass pre-publication audit, is in our ASA and CAP Code compliance guide.

Enforcement has real teeth. An upheld ASA ruling requires the content taken down and names the brand and creator publicly. Repeat or serious breaches can be referred to the Competition and Markets Authority, which under the Digital Markets, Competition and Consumers Act 2024 now has direct civil penalty powers without going through the courts. Separately, the Online Safety Act 2023 raises the stakes on any alcohol content that reaches under-18 audiences by placing duty-of-care obligations on platforms. And in the drinks category specifically, the reputational dimension is amplified: an alcohol ruling that targets under-18s is a near-guaranteed press story, and the search results follow the brand for years.

The arithmetic, as always, favours doing the audit before publication. Checking a creator's audience age split and briefing the Section 18 content rules costs a few minutes per deliverable. An upheld ruling costs a take-down, a press cycle, and potentially a CMA referral.

This section is for creators. A drinks brief can be good money and good content, but alcohol is the vertical where a single post can put your name on a public ruling, so treat it with more care than a normal brand deal. Three checks protect you.

• Check your audience age split first. Before you even reply, look at your own analytics. If more than 25% of your audience is under 18, you cannot lawfully carry an alcohol ad under rule 18.15, and the honest move is to decline and say why. This protects you and the brand. Being upfront about a young audience is far better than taking the deal and becoming the test case.
• Make sure everyone on screen reads as 25-plus. Under rule 18.16, anyone drinking or in a significant role must neither be nor seem under 25. If you have younger friends or family in your content, keep them out of any frame with a drink.
• Refuse the confidence, popularity, attractiveness angle. If the brief wants you to imply the drink makes you more confident (18.2), more popular or socially successful (18.3), or more attractive (18.5), or to show excess (18.1), push back. A good drinks brand will already know these rules; a brand that pushes you towards these framings is putting your name at risk to protect its metrics.

Then disclose normally: "Ad" at the start of the caption plus the platform Paid Partnership tag. To be discoverable to drinks brands that need creators with a verified 25%-or-less under-18 audience, create a free Collabios profile with your audience demographics. Drinks brands can browse the marketplace and filter to creators whose real audience fits the Section 18 age gate before booking.

Alcohol campaigns fail most often at the eligibility stage, not the content stage: a brand books a creator whose audience turns out to be too young under rule 18.15, and the breach exists before any content is even made. A manually vetted marketplace where audience age is checked rather than self-declared removes that failure mode at the source.

On Collabios a drinks brand shortlists creators by tier, niche, country and engagement, and can screen for a real audience that is 25%-or-less under-18, which is the single most important filter in this vertical. Because creators are manually vetted, the audience-age data is not a self-declaration you have to trust on faith. You book directly, the deal sits on a contract where you can embed the Section 18 content constraints and the disclosure requirement, and the pricing is per collaboration rather than a retainer, which suits drinks brands running focused seasonal pushes (summer, Christmas, a product launch) rather than an always-on programme. The disclosure tooling surfaces the CAP Code "Ad" wording per deliverable.

For the contract layer that carries the age and content constraints, our influencer contract guide covers the mechanics, and for cross-border drinks campaigns into the EU (where the local disclosure and alcohol rules differ by country) our EU disclosure rules by country guide covers the per-country wording.