How UK expert and creator disclosure works under the CAP Code and the CMA

What to take away

Who regulates UK expert disclosure and why it matters

Two bodies matter for expert and creator content aimed at business buyers. The Advertising Standards Authority writes and enforces the CAP Code for non-broadcast advertising, which covers social posts, newsletters, whitepapers and paid partnerships. The Competition and Markets Authority treats hidden advertising as an unfair commercial practice under consumer protection law.

The split catches people out. The ASA rules on whether an ad is recognisable. The CMA can act where a commercial arrangement is presented as independent judgement, which is the risk in expert-led B2B content.

That risk is higher in B2B than in consumer campaigns. A finance director citing a consultant's LinkedIn post, or a procurement lead reading a sector analyst's newsletter, is making a buying decision worth far more than a typical consumer purchase. Undisclosed payment distorts that decision.

The CAP Code sits alongside the UK Code of Broadcast Advertising and the broadcast code for video on demand. The advertising codes set out the full rulebook, and the non-broadcast section is the one that applies to almost all expert marketing.

Other regulators sit at the edges. The Information Commissioner's Office enforces UK GDPR on how you handle creator and audience data. HM Revenue & Customs cares about VAT and income tax on payments to creators. Companies House lets you verify that an agency or creator is a real registered business.

Industry bodies set expectations too. The Chartered Institute of Marketing, the Institute of Practitioners in Advertising and the British Interactive Media Association all publish guidance that assumes disclosure is a baseline, not an optional extra.

For teams building a programme from scratch, our guide to advertising rules without the jargon covers the same ground in plainer terms.

CAP Code rules on recognisability of ads

The core rule is short. Marketing communications must be obviously identifiable as such. The ASA's guidance on recognising ads on social media applies that rule to influencer posts, including where a brand pays for content or supplies a product free.

Three tests do most of the work. Was there a payment or equivalent benefit? Does the audience understand the commercial relationship from the post itself? Is the label clear before the audience reads the endorsement?

Payment does not have to be cash. Free software licences, event tickets, hotel stays, research access and revenue share all count. So does a discount code that only pays out if the creator sells something.

Control matters as well. If the brand approves the wording, sets the posting date or supplies the images, the content is advertising even when the creator writes it. Editorial independence does not cancel a commercial arrangement.

Labels must be unambiguous. "Ad", "Advert" and "Advertising" work. "Sponsored" works when the sponsorship is clear. "Partnership", "collab" and "thanks to" do not, because a reader cannot tell whether money changed hands.

Placement matters more than wording. A label buried after a "read more" link, in a hashtag block at the end, or in a story that vanishes after 24 hours fails the test. The label belongs in the first line the audience sees.

Platform tools help but do not settle the question. Instagram's paid partnership tag and YouTube's paid promotion checkbox are useful signals. They do not remove the need for a plain label in the post itself.

B2B formats need the same treatment. A paid expert post on LinkedIn, a sponsored slot in a trade newsletter, a webinar with a paying sponsor and a gated whitepaper written by a paid consultant all fall inside the CAP Code.

CMA guidance on hidden advertising for business audiences

The CMA is the UK's competition and consumer authority. Its guidance on unfair commercial practices covers online endorsements and the risk that paid promotion is presented as independent advice.

The CMA's concern is different from the ASA's. The ASA asks whether an ad is identifiable. The CMA asks whether a commercial practice misleads a buyer, and it can act on its own initiative without waiting for a complaint.

The enforcement route is the Digital Markets, Competition and Consumers Act, which gives the CMA direct powers to decide whether a practice is unfair and to fine businesses that breach consumer law. That is a bigger financial exposure than an ASA ruling.

Expert content is squarely in scope. A consultant who is paid to recommend a platform, an analyst whose research is funded by a vendor, or a trade publication running advertorial without a label all risk CMA attention.

Business-to-business buyers are still consumers for these purposes when they act for their business. The CMA has been clear that small business purchasers deserve the same protection against misleading endorsement as household buyers.

Practical steps follow from that. Keep a written record of what was paid, when, and in what form. Make sure the commercial relationship is visible in the content itself, not just in a contract. Train creators on the difference between an opinion and a paid recommendation.

Our disclosure policy explained piece sets out how to write the internal document that holds all of this together.

ASA ruling examples involving expert and creator content

The ASA publishes every upheld and not upheld case. Reading ASA rulings is the fastest way to see how the rules are applied to real campaigns, and the pattern is consistent across sectors.

Recurring themes appear again and again. Ads that were not obviously identifiable because the label sat at the end of a caption. Ads where the brand and creator both assumed the other was handling disclosure. Ads where a commercial relationship was described as a personal recommendation.

Expert and professional content follows the same logic. Where a post presents a professional opinion on a product or service and money or free access changed hands, the ASA expects a label. The seniority of the author does not change the analysis.

Video and audio are treated the same as text. A spoken disclosure at the start of a video is fine. A disclosure in the description below a video that most viewers never open is not.

Repeat cases are the ones that hurt. When the ASA sees the same advertiser or the same type of breach repeatedly, it moves from publishing a ruling to using its tougher sanctions. That escalation is public and permanent.

The practical lesson for agency planners is to brief disclosure as a deliverable, not an afterthought. Put the label in the creative brief, in the creator contract and in the approval checklist.

A short worked example shows how it goes wrong. A software vendor pays a sector consultant to write a LinkedIn post about a new tool. The post praises the tool, names the vendor and ends with a hashtag. No label appears in the visible text.

What the ASA would expect: the word "Ad" at the start of the post, before the first line of praise. What the CMA would expect: the same, plus a record showing the payment and the brief. Neither is satisfied by the hashtag.

Sanctions and non-compliant online advertiser lists

The ASA's first move is a ruling, which requires the advertiser to change or withdraw the ad. Most cases stop there. When they do not, the sanctions process escalates.

The escalation ladder is worth knowing before you need it.

The non-compliant online advertisers list is the sanction that worries marketing directors most. It is indexed by search engines, it names the company, and it stays up while the breach continues. For a B2B brand selling on trust, that is a direct commercial hit.

Media owners act on ad alerts. National publishers, platform ad teams and several trade titles check the alert system before accepting bookings. A brand on the list can find its paid reach quietly shrinking.

Trading Standards referral is the last step and the most serious. It brings statutory enforcement, potential fines and, in the worst cases, prosecution. It is rare, but it exists.

The compliance takeaway is simple. Fix the ad when the ASA first writes to you. The cost of a quick edit is trivial next to the cost of being named.

Pre-clearance through ASA Copy Advice

ASA Copy Advice is a free, confidential service that reviews proposed ads before they run. It is not a guarantee of compliance, but it tells you whether the ASA would have concerns.

Use it for the awkward cases. A paid expert post where the commercial relationship is hard to describe in one line. A sponsored research report where the funder wants a say in the conclusions. A webinar series with multiple sponsors and one host.

Turnaround is usually a few working days, so build it into the schedule. Submit the actual creative, not a description of it, because the label placement is the thing being tested.

The service is separate from the complaints process. Asking for advice does not flag your campaign for investigation, and the advice is not published.

Copy Advice is worth using wherever a campaign runs, from Greater London and the South East to the North West and Scotland. It costs nothing but time, and it is the only pre-clearance route open to every advertiser.

Keep the response on file. If a complaint arrives later, a documented Copy Advice enquiry shows you took the rules seriously, which can influence how the ASA handles the case.

Disclosure wording that survives both regulators

Good disclosure satisfies the CAP Code and the CMA at once. It is visible, it is early, it is plain and it names the relationship.

Use this checklist before anything goes live.

Wording that works is short. "Ad: paid partnership with [brand]." "Advert. [Brand] paid me to write this." "Sponsored by [brand]. All views my own."

Wording that fails is equally predictable. "Thanks to [brand]", "in collaboration with", "partner", "ambassador" and any label placed after the endorsement. Each leaves the reader unable to tell whether money changed hands.

The table below maps the common formats to what each regulator expects.

Two habits keep a programme clean. First, treat the label as part of the creative, not a compliance add-on. Second, review the wording whenever the format changes, because a line that works in a static post may fail in a short video.

Keep the records together. Payment dates, briefs, approval emails and Copy Advice responses should live in one place, so that a complaint can be answered in a day rather than a fortnight.

Our UK rules and compliance guide covers the legal side in more depth, and the summary of what UK regulations mean for brand teams is a useful briefing for non-specialists.

Set a date to review compliance at least once a year, and sooner when a platform changes its tools or a regulator updates its guidance.

Common questions