Consumer protection rules that apply even when nobody buys anything

A council leaflet promotes a free home insulation scheme with the line "cut your heating bills by up to 40%". Three questions decide whether that line is lawful: what evidence supports 40%, did that evidence exist before the leaflet went to print, and how many households will get anywhere near it. Nobody buys anything. No money changes hands. Neither fact helps, because substantiation and fairness rules attach to the claim, not to the transaction.

That is the trap. Public sector marketers assume consumer protection law is about purchases. It is about influence over decisions, and influencing decisions is most of what a communications budget does.

Why "no purchase" doesn't mean "no rules"

In the UK the rules arrived as the Consumer Protection from Unfair Trading Regulations 2008 (CPRs) and were re-enacted and widened by the Digital Markets, Competition and Consumers Act (DMCCA) 2024, whose consumer provisions came into force in 2025. They ban misleading actions, misleading omissions and aggressive practices in commercial communications, including communications promoting a service that costs the public nothing.

The legal hook is "trader" and "commercial practice", both read broadly. UK consumer statute defines "business" to include the activities of a government department and of a local or public authority. A council promoting a subsidised gym, a leisure trust filling classes, an NHS (National Health Service) trust marketing a screening programme: all traders for these purposes, because the communication is designed to shift behaviour connected to a service.

In the EU the equivalent is the Unfair Commercial Practices Directive (UCPD, 2005/29/EC), transposed nationally and enforced by bodies such as the Netherlands' Authority for Consumers and Markets (ACM). The 2019 Omnibus revision pushed member states to set maximum fines of at least 4% of annual turnover for widespread cross-border infringements, which is what turned a paper regime into a budgeted risk. ACM's work on airline sustainability claims is the useful precedent for public bodies: the claims were vague rather than false, and carriers still had to withdraw or reword them.

In the US, Section 5 of the FTC Act bars "unfair or deceptive acts or practices in or affecting commerce". Note the edge case, because it catches people out: the Federal Trade Commission (FTC) generally has no jurisdiction over genuine non-profits or over government entities themselves. That is not a safe harbour. State attorneys general enforce state unfair and deceptive practices statutes with no such carve-out, and the moment a commercial delivery partner touches the campaign, the FTC's jurisdiction is back.

The failure modes public campaigns actually hit

1. Misleading claims.

Overstating benefit or certainty is the most common breach, and relative risk is where honest people slip. A screening intervention that moves the outcome from two cases per thousand to one case per thousand is a 50% reduction and a 0.1 percentage point reduction, both true. Lead with the first and omit the second and you have a misleading action. A leaflet claiming a test "will detect cancer early" rather than "can help detect" has the same defect: every screening test produces false negatives. The UK National Screening Committee publishes guidance on communicating screening benefits and harms honestly for exactly this reason.

2. Misleading omissions.

Leaving out material information the audience needs in order to decide. A "free" insulation scheme that omits that eligibility ends at installation, and that future maintenance falls on the resident, is an omission problem rather than a lie problem. Omitting a material fact is treated as seriously as stating a false one.

3. Aggressive practices.

Pressure, coercion or undue influence, including exploiting fear, urgency or a power imbalance. A letter styled as a legal notice, a deadline that does not exist, or an implied penalty for inaction can all be judged aggressive with no sale attached. Public bodies start from the trusted-messenger position the foundations lesson sets out, which makes the imbalance worse, not better.

4. The banned list.

Just over thirty practices are prohibited outright, with no test of whether anyone was actually harmed. Two matter constantly here: describing something as "free" when the consumer must pay anything beyond the unavoidable cost of responding or collecting it, and claiming that a product can cure an illness. A "free" scheme with a mandatory £15 survey fee is not a judgement call. It is on the list.

What this means for the copy you're allowed to write

• Absolute claims need absolute evidence. "Prevents", "cures", "guarantees" require certainty you rarely have. Use "can help", "is associated with", "most people who".
• State the catch where the catch lives. Eligibility limits, follow-up costs and expiry dates belong in the headline material, not the footnote.
• "Up to" is a claim about the typical case, not the best case. CAP guidance on broadband once required that at least 10% of users could actually reachreachThe number of unique people exposed to your message in a given period. Unlike impressions, reach counts each person once, no matter how often they see it.View full definition → an advertised "up to" speed, and it was replaced in 2018 with a median-speed test precisely because 10% was still too generous. Apply the harder version: if the median household saves 12%, do not lead with 40%.
• Match urgency to reality. Deadline language works only when the deadline is real and enforceable.
• Campaigns aimed at at-risk groups are judged against a stricter standard, on the terms the vulnerable-audiences lesson sets out.

The advertising layer: ASA and CAP codes

Beyond hard law, most UK marketing sits under the UK Code of Non-broadcast Advertising (CAP Code), enforced by the Advertising Standards Authority (ASA). Public bodies are not exempt, and CAP rule 3.7 is the one that bites: hold documentary evidence for objective claims *before* publication. Assembling it after a complaint arrives is itself the finding.

There is a scope boundary worth knowing. The Code excludes marketing whose principal function is to influence voters in an election or referendum. A public information campaign is covered; something that drifts into political territory falls outside the ASA and into the neutrality rules the foundations lesson describes, which is a worse place to land, not a safer one.

ASA rulings carry no fines. They carry a published, permanently searchable adjudication, an obligation to withdraw or amend, alerts to media owners, removal of paid search ads, and referral to Trading Standards for persistent cases. The timing is what costs money: rulings land mid-flight, when the media budget is already spent and the print run is already distributed.

What actually counts as substantiation

Regulators ask for a level of proof that most campaign teams have never had to produce.

The FTC's Health Products Compliance Guidance (December 2022) sets the benchmark for health benefit claims: competent and reliable scientific evidence, which in practice means randomised, controlled human trials, not observational data and not a supplier's marketing deck. The ASA applies a comparable standard and expects evidence on objective claims to have been reviewed by someone qualified to review it.

Four things that fail this test more often than teams expect:

• Evidence from a different population. A trial in adults aged 40 to 60 does not substantiate a claim in a leaflet aimed at over-75s.
• Modelled projections presented as measured outcomes. Model output is a forecast and should read like one.
• Programme data from a pilot with fifty participants used to make a population-level claim.
• Claims that are literally true and still misleading. Both the ASA and the FTC judge net impressionimpressionThe total number of times an ad or piece of content is displayed, regardless of clicks. Each display counts as one impression, even to the same person.View full definition →, which includes the image, the layout, the type size and what the small print retracts from the headline.

The second-order consequence is the one to plan for. A claim you can substantiate is almost always weaker than the claim your draft wanted, which means response rates come in lower than the business case assumed. Deciding that at brief stage costs a conversation. Deciding it after an ASA ruling costs the media spend, the reprint, and a public record that any journalist can find in ten seconds.

🎬 [VIDEO: "Unfair Commercial Practices Explained" - youtube.com - search for CMA or Trading Standards explainer content on misleading and aggressive practices under UK consumer law]

Key Takeaways

• Consumer protection law (UK CPRs and DMCCA 2024, EU UCPD, US FTC Act Section 5) applies to free-service communications: the trigger is influence over a decision, not a sale.
• Misleading claims, misleading omissions and aggressive pressure are the judgement-based failures; the list of just over thirty banned practices, including misusing the word "free", needs no judgement at all.
• Relative risk, "up to" figures and net impression are where honest public health copy turns misleading.
• Substantiation must exist before publication and must match the audience you are addressing; for health claims the reference standard is controlled human trials.
• ASA rulings carry no fine and still cost real money, because they land mid-flight and stay searchable; the FTC's non-profit carve-out is not protection once a commercial partner is involved.