Pre-publication checks for a UK influencer marketing agency

What to take away

What to ask an influencer marketing agency before you brief it

The checks that follow double as the questions a brand should put to any influencer marketing agency it is considering. Ask for the sign-off sequence, the gifting register template and the structure of the compliance file. Ask who owns final approval, how claim evidence is stored and whether Copy Advice is used on borderline claims.

An agency working in regulated categories, such as alcohol, gambling or weight control, should be able to describe how it maps audience age before it approves creative. If it cannot, the risk sits with the brand as much as with the agency.

Agencies can prepare for this. Writing the process down, with named owners and dated records, is the part of the service a prospective client can see before any money changes hands.

What the CAP Code requires before a creator post is published

The CAP Code is the rulebook the Advertising Standards Authority enforces for non-broadcast ads, which includes almost all influencer content in the UK. It applies whether the creator was paid in cash, in product or in a free trip.

An agency cannot wait for a complaint to check compliance. The rules on recognition, misleadingness, substantiation and social responsibility must be cleared before the creator is given the go-ahead to publish.

Recognition is the first test. A post must be obviously identifiable as an ad. The ASA has repeatedly ruled against posts where the commercial relationship was buried under a hashtag, a tag or a thank-you.

The CAP Code does not prescribe one magic label, but it does require that the ad is clear without the viewer having to work it out. "Ad" at the start of a caption, not hidden after a line break, is the safest default for most formats.

Claims are the second test. Any factual claim in a creator post must be substantiated before publication. That includes price claims, health claims, environmental claims and performance claims. If the brand cannot supply evidence, the agency should not let the creator make the claim, even if the creator believes it personally.

The CAP Code also restricts claims in sensitive categories, such as alcohol, gambling, weight control and cosmetic interventions.

Incentives and competitions need their own check. A prize promotion run through a creator must have clear terms, a closing date and a way to enter without paying. The rules differ from ordinary ad rules, and agencies often miss them because the creator owns the post.

The same applies to referral links and discount codes, which can turn an organic post into an ad even when no money changes hands.

Social responsibility rules apply to the content itself. The CAP Code requires that ads do not condone harmful behaviour, do not play on fear or superstition, and do not portray irresponsible drinking or unhealthy body images.

For creators with younger audiences, the age-gating and targeting rules matter as much as the caption. An agency should map the audience before it approves the creative, not after.

Placement is part of the CAP Code too. Paid ads must not be placed in media targeted at children under 12 where the product or service is unsuitable, and some product categories are banned from certain placements altogether.

The creator's own channel is the placement, so the agency needs to know who follows that channel and how the platform serves the post. For a wider map of where these duties sit, see regulations, codes and platform rules.

The practical effect is that the CAP Code is not a single tick box. It is a set of tests that apply at different stages: brief, script, caption, creative, placement and publication.

An influencer marketing agency that treats it as a caption review alone will miss the substantiation and placement points. The Non-broadcast Code - ASA | CAP sets out the rules that UK influencer agency work must comply with before a creator post goes live.

How the CMA's endorsement guidance shapes the agency brief

The Competition and Markets Authority enforces consumer protection law under the Consumer Protection from Unfair Trading Regulations 2008, which is separate from the CAP Code. Its guidance for content creators is written for creators, but agencies should treat it as the minimum standard for every brief.

The CMA's concern is that a consumer can tell when a post is a paid endorsement, and that the endorsement is not misleading.

Under the CMA guidance, a disclosure must be clear, prominent and timely. That means it should appear before the consumer engages with the content, not in a comment, not in a bio, and not at the end of a long caption.

The words used should be unambiguous: "ad", "advert" or "paid partnership" work. A brand tag alone is not enough, and a thank-you to the brand is not enough.

The CMA guidance also covers gifts and freebies. If a creator receives a product for free and the brand expects coverage, that is an endorsement and it must be disclosed. The test is whether the brand paid or gave something in return for the content, not whether cash changed hands.

Agencies should record what was given, when and on what terms.

Agency briefs should translate the CMA guidance into specific instructions for each platform. Instagram, TikTok, YouTube and podcast formats all have different conventions, and a disclosure that works on one may fail on another.

The brief should name the exact wording, the exact position and the exact format, and it should require the creator to keep the disclosure visible for the life of the post.

The CMA can act against misleading endorsements, and it can require undertakings or take court action. It does not fine in the way the ASA can refer to other regulators, but the reputational and legal risk is real.

For agencies, the safer approach is to build the CMA standard into the creator contract and the content approval form, so no post goes live without a recorded disclosure check. The Social media endorsements: guidance for content creators - GOV.UK is the CMA's own explanation of how paid endorsements should be disclosed.

HMRC treatment of gifted products and payment in kind

HMRC does not have a single "influencer tax". It applies the ordinary tax rules to what the creator receives. If a creator gets a product, a service, a trip or a discount in return for content, that benefit usually has a value, and that value can be taxable.

The agency is not the creator's tax adviser, but it is often the party that arranges the benefit, so it needs to keep records.

For VAT, the key question is whether a supply has been made. A gift of goods can be a supply for VAT purposes if it is made in the course or furtherance of a business and the cost is significant.

The VAT guide sets out the core rules on gifts, samples and business promotions, and agencies should understand them before they agree a gifting campaign. The VAT guide (VAT Notice 700) - GOV.UK covers the core VAT rules relevant to gifted products and agency billing. The threshold is exact: you do not have to account for VAT on business gifts made to the same person so long as the total cost of all gifts you make to that person does not exceed £50, excluding VAT, in any 12-month period.

Payment in kind can also create an employment or self-employment question. If a creator is treated as an employee for tax purposes, the benefit may need to be reported to HMRC on a P11D and taxed through payroll.

Most creator relationships are self-employed, but the status test depends on control, substitution and mutuality of obligation, not on the label in the contract. Agencies should not assume that a one-off gifting deal is outside the tax net.

For the creator, gifted products and fees are generally taxable income. HMRC expects creators to declare the value of benefits they receive in return for promotion. Agencies can help by giving creators a clear statement of what was provided and what it was worth. That statement also protects the agency if HMRC later asks how the campaign was structured.

Agencies should keep a gifting register. It should record the product, the retail value, the date sent, the creator, the campaign and whether any content was published. That register feeds the compliance file and supports the VAT treatment. It also helps when a brand asks for a reconciliation of what was sent against what was posted.

Where a campaign involves cash fees, the agency should be clear about who contracts with whom. If the agency pays the creator, it may need to consider its own VAT position and whether it is acting as principal or agent. The contract and the invoice trail should match the reality of the arrangement.

For a broader view of where tax sits alongside other duties, see advertising, consumer law, privacy.

Reading recent ASA rulings as compliance precedent

ASA rulings are not law, but they are the best available guide to how the regulator will treat a similar post. Each ruling sets out the ad, the complaint, the response and the reasoning. Agencies that read them regularly spot patterns before they become a problem.

The searchable database is at Rulings - ASA | CAP, and it is worth checking before a campaign goes live.

One recurring theme is hidden advertising. The ASA has ruled against posts where the disclosure was only in a comment, only in a tag, or only in a video that did not mention the commercial relationship until the end. Take the ruling against Sony Interactive Entertainment Europe Ltd t/a Playstation: it concerned a social media influencer ad, was upheld on 09 August 2023, and found the ad breached CAP Code (Edition 12) rules 2.1, 2.3 and 2.4 (Recognition of marketing communications).

The lesson is that the disclosure must be in the post itself, at the point of first contact, and in the same language as the rest of the content.

Another theme is misleading claims. Rulings have turned on claims that were not substantiated, including health, beauty and money-making claims. If a creator says a product does something, the brand must hold evidence before the post is published. Anecdotal experience is not substantiation for an objective claim.

A third theme is targeting. The ASA has ruled against ads for age-restricted products that were seen by children. The agency's audience data and the platform's targeting settings are part of the evidence. If the campaign is for alcohol, gambling or another restricted category, the ruling history shows how strict the regulator is about who sees the ad.

A fourth theme is the treatment of incentives. Rulings have dealt with prize promotions, referral schemes and discount codes that were not clearly explained. The ASA expects the terms to be visible and the entry route to be fair. Agencies should read these rulings before designing a promotion, not after a complaint.

Agencies can use rulings as a training tool. A short monthly review of relevant rulings, circulated to account teams and creators, builds judgement faster than a policy document alone. The influencer disclosure policy should be updated when a ruling changes the expected wording or placement.

Rulings also help when a brand pushes back on a compliance point: a published decision is harder to argue with than an agency opinion.

The sign-off steps an influencer marketing agency must complete

Sign-off is a sequence, not a single meeting. The steps below are the minimum an agency should complete before a creator post goes live. Each step should have a named owner and a date recorded in the compliance file.

After publication, the work is not over. The agency should check that the post went live as approved, that the disclosure is visible, and that the caption has not been edited. Screenshots should be taken on the day of publication and stored with the approval record.

If the creator edits the post later, the agency should ask for it to be corrected or taken down.

A simple checklist can be used at the final gate:

For a worked example, take a skincare brand running a paid TikTok campaign with a creator who also receives free product. The agency confirms the post is an ad and requires "Ad" at the start of the caption.

The brand supplies clinical evidence for the claim "reduces redness in 14 days". The agency checks that the product is not age-restricted, records the gift value and date, and confirms the creator's fee is invoiced with VAT where applicable.

The brand and compliance lead approve in writing. The post goes live, the agency screenshots it, and the file is closed. If the creator later removes the disclosure, the agency has the evidence to act.

The steps should be proportionate. A low-risk organic-style post from a long-standing creator still needs a disclosure check and a claim check, but it may not need the full category review. The agency should define risk tiers in its own process and record why a step was shortened.

For how these gates fit with authority and payment, see gates for authority, claims.

Copy Advice and the pre-clearance route for borderline claims

The ASA offers Copy Advice, a free and confidential service that checks ads before they are published. Agencies can use it to check whether a proposed post is likely to break the CAP Code before it goes live.

It is not a guarantee, and it does not bind the ASA, but it is a strong signal and it creates a useful record. The service is described at Copy Advice - ASA | CAP.

Copy Advice is most useful for borderline claims, new formats and campaigns in sensitive categories. If a claim sits between two rule interpretations, or if the creative uses a technique the agency has not run before, Copy Advice can save a costly relaunch. It is less useful for obvious breaches, which the agency should simply fix.

The service works best when the agency sends the actual proposed content, not a summary. That means the caption, the script, the on-screen text and the disclosure wording. The more complete the submission, the more useful the response. Agencies should build a short internal note explaining the claim, the evidence and the target audience.

Copy Advice does not replace the agency's own judgement. It is a second opinion, not a substitute for the sign-off steps. The agency should still record its own reasoning and the evidence behind each claim. If Copy Advice suggests a change, the agency should apply it and record the version that was approved.

For repeat campaigns, agencies can use Copy Advice to test a template. Once a disclosure wording or a claim structure has been reviewed, it can be reused with confidence, provided the facts do not change. That saves time and builds a library of pre-cleared approaches.

For the recognition and incentive checks that sit alongside this, see check recognition, claims, incentives.

Keeping the compliance file: evidence, dates and owners

The compliance file is the agency's defence. It should be created at the start of the campaign and closed after publication.

It should hold the brief, the contract, the disclosure wording, the claim evidence and the category check. It should also hold the gifting record, the approvals and the post-publication screenshot. Each item should carry a date and a named owner.

The file should be easy to retrieve. If the ASA or the CMA asks a question months later, the agency should be able to produce the relevant documents within a day. A shared drive with a standard folder structure is enough. The important thing is that the file is complete and that the version history is clear.

The file should also record decisions that were not taken. If a claim was removed, note why. If a creator was rejected, note why. If Copy Advice was used, keep the response. These records show that the agency applied a process, which matters if a complaint is made.

Owners should be named, not implied. The compliance lead owns the final approval. The account manager owns the brief and the creator relationship. The brand owns the claim evidence. When something is missing, the file shows who was responsible. That clarity prevents the common failure where everyone assumed someone else had checked the disclosure.

The file should be reviewed after each campaign. A short note on what went wrong and what changed is more useful than a perfect file that is never read. Over time, the file becomes a precedent library, and the agency's sign-off gets faster without getting weaker.

Common questions