TL;DR

Product review compliance in the UK means collecting, displaying and using customer reviews without fake content, hidden incentives or misleading star ratings. The Digital Markets, Competition and Consumers Act 2024 made fake and concealed incentivised reviews a specific banned practice, with CMA fines reaching up to 10% of global turnover. Incentivised reviews are not automatically illegal, but they must reflect genuine experience, disclose the incentive clearly, and allow honest sentiment. Retailer policies (Tesco, Ocado, Sainsbury’s) can be stricter than the law itself.

Product review compliance in the UK is no longer a “nice to have” concern buried in a legal team’s filing cabinet. It is a live enforcement priority. Since April 2025, the CMA has had the power to fine businesses directly for fake or misleading reviews, and it is already using that power. In March 2026, the CMA opened investigations into five businesses across the review ecosystem, including Autotrader, Feefo, Just Eat and others.

For FMCG brands running review campaigns on retailer product pages, the stakes are clear: get this wrong, and you face legal penalties, retailer sanctions and lasting trust damage.

If your team needs to build review volume on UK grocery retailer sites, Brand Allies’ review service is built around verified shopper purchases and operational compliance controls.

Product review compliance UK: definition

Product review compliance UK is the practice of collecting, displaying and using customer reviews in line with UK consumer law, CMA guidance, ASA/CAP advertising rules and retailer platform policies.

In practice, it covers everything from how a review is generated (did the reviewer actually use the product?) to how it is displayed (are star ratings and review counts accurate?) to how it is reused (can you put that five-star quote in an ad?).

A review must come from a real experience. The shopper must be free to say what they actually think. And if there was any incentive involved, that needs to be obvious.

The definition matters because product review compliance is not just about avoiding outright fakes. It also covers concealed incentives, cherry-picking positive reviews, suppressing negative ones, and presenting review information (star ratings, counts, summaries) in ways that mislead shoppers.

Why product review compliance matters now

Three forces make this topic urgent for UK brands in 2025 and beyond.

Consumer influence is enormous. The CMA cites research showing that 89% of UK adults use online reviews when researching a product or service, and reviews contributed to £217 billion spent in online retail markets in 2023.

Legal risk has increased dramatically. Under the new consumer enforcement regime, the CMA can impose penalties of up to 10% of global turnover or £300,000, whichever is greater, without first going through the courts. This applies to businesses that commission, publish or facilitate fake or misleading reviews.

Consumer trust is fragile. Practitioners on Reddit consistently flag scepticism toward incentivised review pools. In a Sephora discussion thread, users said that products where all reviews appeared incentivised made them less interested in buying, with one former sampling programme participant admitting that reviewers may fear losing future free products if they post negatively. A similar thread about Sainsbury’s showed shoppers complaining that heavy incentivised review volume made ratings and sort functions feel useless.

The commercial lesson: even disclosed incentivised reviews can backfire if the entire review pool looks biased.

The UK rules in plain English

The DMCC Act created a specific banned practice

The Digital Markets, Competition and Consumers Act 2024 introduced a named banned practice covering fake reviews, concealed incentivised reviews, and the misleading publication of consumer reviews or review information. The unfair commercial practices provisions came into force on 6 April 2025.

This means fake reviews are no longer just an advertising standards issue. They are a consumer law violation with real financial consequences.

The ASA/CAP rules apply when reviews appear in marketing

When brands use reviews in ads, landing pages, emails, retailer media or sales materials, the CAP Code now includes specific rules. Rule 3.44 prohibits fake consumer reviews in marketing communications. Rule 3.45 requires disclosure of incentivised reviews. Rule 3.46 prohibits misleading review presentation. Rule 3.47 requires documentary evidence that testimonials used in marketing are genuine.

What counts as a “consumer review”

The CMA defines consumer reviews broadly. Text, speech, star ratings, “helpful” votes and graphic representations all count. So does “consumer review information,” meaning overall ratings, review summaries, review counts and rankings derived from reviews. The law is not only about review text. The average star rating displayed on a product page can be misleading on its own.

What counts as a fake review

A fake review is one that appears to be based on genuine experience but is not. The CMA’s guidance gives several examples:

• A brand employee pretending to be an ordinary shopper
• A reviewer who never used the product
• AI-generated reviews presented as real customer experiences
• A review copied from another person
• A review for Product A used to boost Product B’s ratings (sometimes called “catalogue abuse” or “review hijacking”)

For FMCG brands, that last point is particularly relevant. If you carry over old reviews from a previous recipe, formulation, pack size or regional variant, and the consumer experience is materially different, those reviews can become misleading. The CMA explicitly flags this risk.

If your brand is launching a new SKU, building a review base from scratch with verified purchasers is safer than importing reviews from a different product.

Are incentivised product reviews legal in the UK?

Yes, but with conditions.

The CMA says traders may incentivise customers to leave reviews through payment, future discounts or free products, provided the review reflects the reviewer’s genuine experience and consumers are told the review was incentivised. Incentivised does not mean fake. Hidden, controlled or dishonest is the problem.

However, UK law is the floor, not the whole rulebook. Retailers can impose stricter conditions.

Tesco permits incentivised reviews only if incentives are clearly and prominently disclosed and are not contingent on a positive rating or review. This aligns closely with the CMA’s position.

Ocado goes further. Its policy states that users may not submit a review incentivised or compensated by a third party. Even if UK law permits the activity, Ocado’s own terms may not.

Sainsbury’s links online review submission to previous purchase history, meaning the operational route to posting a review matters as much as the legal principle.

The practical takeaway: before running any incentivised review campaign on a retailer site, check that retailer’s current review policy. “Legal” and “allowed on this specific platform” are different questions. For brands exploring how reviews work on Ocado specifically, the restrictions are worth reading in detail.

For FMCG teams managing sampling or promotional mechanics alongside review activity, Brand Allies’ promotions service separates the incentive structure from the review itself.

What compliant review generation looks like

The CMA specifically flags offering a free product for a five-star review, reimbursing shoppers only after a positive review, and purchasing software-generated reviews as examples of unlawful commissioning.

The CLEAR checklist for UK product review compliance

This framework translates the CMA and ASA rules into five operational checks.

C, Confirm real use

The reviewer must have actually bought, tried or used the product. A review that claims genuine experience without it is a fake review under the CMA’s definition.

L, Label incentives clearly

Free products, reimbursements, vouchers, discounts or other benefits must be obvious. The CMA’s social endorsement guidance says labels should be clear, prominent and easy to understand. Audiences should not need to scroll, click or study the content to recognise advertising.

E, Enable honest sentiment

Do not ask for positive reviews, five-star reviews or “only if you liked it” reviews. Do not tie incentives to sentiment.

A, Avoid cherry-picking

Do not suppress genuine negative reviews. Do not selectively invite only satisfied customers. The CMA warns that encouraging only happy people to review can create a misleading picture.

R, Retain evidence

Keep the campaign brief, incentive terms, shopper instructions, purchase evidence, disclosure wording, submission timestamps and moderation outcomes. CAP Code rule 3.47 requires documentary evidence for testimonials used in marketing.

A compliant review campaign is not simply one that gets published. It is one that would still look fair, transparent and evidence-backed if a retailer, the ASA, the CMA or a consumer asked how the reviews were generated.

What records should brands and agencies keep?

Build a “review compliance file” for each campaign containing:

• Campaign objective and product SKU
• Retailer and product page URL
• Shopper eligibility criteria
• Purchase or use verification evidence
• Incentive terms (exact wording)
• Shopper brief (exact wording)
• Disclosure instruction provided to shoppers
• Proof the incentive was not conditional on sentiment
• Review submission dates
• Published, rejected and moderated review status
• Any complaints or retailer moderation feedback
• Evidence of product equivalence if reviews are syndicated or reused

One compliance specialist summarised the CMA’s position on LinkedIn after attending a CMA webinar: fake or misleading reviews written before 6 April 2025 but still published afterwards could be treated as ongoing conduct, and outsourcing review collection or moderation does not outsource responsibility. That interpretation should prompt brands to audit existing reviews, not just future campaigns.

Common product review compliance mistakes

Thinking “verified purchase” solves everything. Verified purchase proves the reviewer had access to the product. It does not solve hidden incentives, sentiment control or retailer policy breaches.

Asking only happy customers to review. The CMA treats this as cherry-picking that can create a misleading picture.

Hiding disclosure in small print. Disclosure must be prominent, not buried behind a “learn more” link or tucked into a profile bio.

Using review snippets in ads without evidence. If your brand quotes “rated 4.8/5” in an ad, you need documentary evidence that the underlying reviews are genuine and that any factual claims within them can be substantiated.

Importing reviews across product variants. Reviews for a US-formulated skincare product are not automatically valid for the UK version if ingredients differ. Practitioners on Reddit’s SkincareAddictionUK community have raised exactly this concern about imported reviews on Boots, noting that reviews sometimes related to different products or formulations.

Leaving old reviews live after reformulation. A cereal that changed its sugar content, a supplement with new active ingredients, a ready meal with a different recipe. Genuine old reviews can become misleading if the product experience has changed materially.

Assuming the agency carries all the risk. The CMA’s guidance covers the full review supply chain, from commission to publication. Brands cannot delegate their way out of responsibility.

For a deeper look at how advocacy differs from review manipulation, the distinction matters operationally.

Retailer product reviews vs influencer endorsements

These are related but different compliance territories.

Retailer product reviews appear on Tesco, Sainsbury’s, Ocado, Boots, Amazon and similar product pages. They influence conversion, on-site search ranking and retailer confidence in the brand. Compliance concerns centre on verified experience, incentive disclosure, retailer-specific policies and review moderation.

Influencer endorsements appear on social media, blogs and video. Compliance concerns focus on ad labelling, brand control, gifts, affiliate links and misleading claims. The CMA and ASA guidance says content creators must clearly label incentivised content as an ad.

The overlap: whenever someone receives a benefit to review or endorse a product, the commercial link must be clear and the content must reflect genuine experience. For brands weighing these two approaches, the key differences between advocacy and influencer marketing are worth understanding before committing budget.

The consumer trust problem that disclosure alone cannot fix

UK product review compliance law sets a minimum standard. But there is a gap between legal compliance and consumer trust.

In a Reddit discussion about Sainsbury’s reviews, users complained that incentivised review volume made ratings feel unreliable. One user specifically said they wished retailers would show incentivised reviews separately or allow shoppers to filter them out. In an Amazon Vine UK thread, reviewers themselves debated where the legal lines sit, with some noting that review brokers still approach people for paid positive reviews despite the law change.

The practical implication: even a fully disclosed, legally compliant review campaign can erode trust if the product page is dominated by incentivised five-star reviews with no organic balance. The best review programmes optimise for legality and believability.

Brands should aim for a mix of verified organic and incentivised reviews over time, not a one-off wall of free-sample praise. Review recency also matters. A steady flow beats a sudden spike. For brands thinking about this strategically, understanding review generation pricing helps with planning a sustainable cadence.

Frequently asked questions

Are paid product reviews illegal in the UK?

Not always. Paid or incentivised reviews can be lawful if the review reflects the reviewer’s genuine experience and the incentive is made clear. They become risky or unlawful if the incentive is hidden, the reviewer has not used the product, or the payment is conditional on a positive review.

Do free samples need to be disclosed in reviews?

Yes, where the free sample is connected with the review. The CMA treats free products, gifts, discounts and other benefits as incentives that may need disclosure, and the social endorsement guidance says incentivised content must be clearly identifiable. For more on how sampling and reviews interact, see our product sampling campaigns guide.

Can a brand ask for five-star reviews?

No. Asking for five-star reviews in exchange for a free or discounted product is specifically given by the CMA as an example of problematic commissioning.

Can negative reviews be removed?

Only for legitimate moderation reasons, such as profanity, personal data or irrelevance. Suppressing genuine negative reviews while publishing positive ones is a compliance risk under the CMA’s guidance on misleading review publication.

Do product reviews count as advertising?

They can. A customer review on a retailer product page is a consumer review. But if the brand uses that review in ads, landing pages, emails, paid media or sales materials, CAP Code rules on testimonials, endorsements and misleading advertising apply.

Can AI be used to write product reviews?

AI should not be used to invent or simulate a shopper’s product experience. A review presented as a real consumer review must be based on genuine experience. Using AI to generate review text that pretends to be a real user experience is high risk under the fake review definition. Practitioners on the AmazonVineUK subreddit have flagged that obvious AI-generated reviews (with telltale phrasing from ChatGPT) are already undermining trust in review systems.

What is the penalty for fake reviews in the UK?

The CMA can impose fines of up to 10% of global turnover under the new consumer regime. Other consequences include ASA rulings, platform sanctions, retailer review removal, account bans and reputational harm. The CMA’s March 2026 investigations signal that enforcement is active, not theoretical.

Does outsourcing review collection remove the brand’s responsibility?

No. The CMA’s guidance covers the review supply chain from commissioning through to publication. Outsourcing to an agency or platform does not outsource legal responsibility. Brands should ensure any partner they work with follows the same compliance standards.

For FMCG teams that need to build review coverage on UK retailer sites without building a manual shopper operation, Brand Allies manages UK shopper review activity through a verified shopper community and structured review workflow. If you have questions about how it works, the FAQs page covers the operational basics.

This guide is for general information and is not legal advice. Brands running high-risk or high-volume review campaigns should seek independent legal advice. Last updated: July 2025.