How ASA and CAP Code rules govern host-read podcast ads

The booking lands: can the script go to air?

A producer receives a UK network's host-read mattress script. It says the product cured the host's back pain, then thanks the advertiser only after a two-minute endorsement. The booking cannot be cleared as drafted: the team must establish that listeners hear an ad disclosure before claims and verify the endorsement.

CAP Code rules generally govern the marketing communication in a host-read podcast ad, rather than Ofcom's Broadcasting Code. But podcast format alone does not rule out Ofcom oversight: a service that meets the statutory criteria for an on-demand programme service may be regulated under Part 4A of the Communications Act 2003. That distinction also matters for UK B2B podcast advertising.

A network-sold host read belongs in the same regulatory category as a sponsored social post, not a commercial radio spot. Recognition, substantiation and endorsement duties remain with the message in each placement. Vendor due diligence therefore includes identifying the seller, checking the proposed claims and finding the disclosure in the script.

Self-regulation is the mechanism. The ASA administers the CAP Code and publishes rulings, but it is not a government regulator and cannot fine an advertiser directly. Instead, it relies on publicity and may ask networks and platforms to withdraw non-compliant ads when needed.

An overseas network's own process does not establish UK compliance. A written disclosure policy should specify who speaks, what is said, when the disclosure appears and where it sits in the episode. The buyer still needs to check the actual read rather than assume that a policy alone makes every placement compliant.

What the first listen reveals

The script fails the first-listen check because its thank-you arrives after the endorsement. CAP Code rule 2.1 requires marketing communications to be obviously identifiable as such; for this audio read, listeners should recognise the ad before hearing the mattress claim or personal anecdote.

The statutory rule points in the same direction. Schedule 20 of the DMCC Act lists as a banned practice editorial content used in media to promote a product where a trader has paid for promotion without making that clear in a way consumers can identify. It targets that undisclosed paid-promotion practice; it does not mean every clearly identified sponsored read is automatically prohibited, although other rules still apply.

No fixed wording is prescribed: an average listener must recognise advertising in context. A first-line statement that the episode is sponsored by the named advertiser can work; a casual thank-you to friends after a two-minute endorsement is weak. Identify the advertiser rather than a category or nickname, and make the line audible at normal speed, not beneath music or rushed delivery.

The same recognition test applies to programmatic inserts; host-read and programmatic ads differ mainly in how disclosure is produced. A host should not omit the disclosure in a later episode just because it appeared in an earlier one.

The evidence file: does the host own the endorsement?

The mattress cure statement is a health claim and a testimonial, so separate tests apply. CAP Code rule 12.1 restricts claims that a product can prevent, treat or cure human disease; its relevant categories include medicines and medical devices, so assess the product's status and the precise claim rather than assuming the medicines-only test applies. The host's personal experience must also be genuine and evidenced.

The CMA's creator guidance is written for social media, but it expresses the related principle that incentivised content must be clearly labelled as an ad and based on genuine experience. CAP Code rule 3.1 prohibits materially misleading marketing communications, and rule 3.7 requires marketers to hold documentary evidence for claims that consumers are likely to regard as objective and that are capable of objective substantiation. Rule 3.45 requires testimonials and endorsements to be genuine and documented; marketers must hold evidence that they are genuine and contact details for the person giving them, as set out in the guidance on testimonials or endorsements.

In this check, the draft contains the cure claim but the campaign file has no documentary basis for it, and the host's experience has not been confirmed. The producer cannot treat this as a genuine endorsement. The claim needs evidence or must be removed, and the script must not imply experience that has not been established.

Keep a short record of the basis for any factual endorsement, such as when the host started using the product. A note that the host likes it is not documentary evidence. The advertiser should retain a source for each factual claim and store the substantiation file with the episode assets, not only with the campaign brief.

The edit decision: revise before recording

With the cure claim unsupported and the host's experience unconfirmed, the producer should revise the words before recording, then seek Copy Advice. That service advises on non-broadcast advertising across sectors in good faith, but its view does not bind the advertiser, CAP or the ASA.

Earlier review is usually better. Changing a line in a document costs nothing, while re-recording a two-minute read and re-issuing the feed costs real money. Pair script review with creative testing of the claims before the studio session.

Copy Advice covers the CAP Code only. Clearcast is the contact for TV ads, while Radiocentre advises on radio ads. Radiocentre material can help brief producers, but it is not a binding podcast rule; keeping that distinction clear helps teams use radio references appropriately.

If the read reaches publication

If a complaint follows publication, the ASA can issue a ruling and publicise the breach, but it cannot fine the advertiser directly. It may ask networks and platforms to withdraw non-compliant ads. Those steps reflect its self-regulatory role in this system.

For persistent non-compliance, the ASA can refer the matter to Trading Standards, which has statutory powers the ASA does not. Publicity is the ASA's main sanction: a published ruling names the advertiser and remains searchable. The CMA also notes that non-compliant content creators can be named and shamed by the ASA, creating public consequences without a direct ASA fine.

A contract can help manage the risk by requiring the network to warrant CAP Code compliance. The wider UK rules and ethics cover other duties that apply before a slot is sold, but the producer still needs to check the actual script and recording.

The controls carried into the next booking

Carry these checks into the next booking: classify the slot as non-broadcast advertising, disclose before claims, retain evidence for each endorsement and review the final script before recording.

The Code follows the audience and advertiser rather than the recording studio, so an overseas recording does not remove the UK compliance check.

Keep the disclosure consistent in every episode and make it clear in the audio itself. A disclosure at the end will usually come too late because listeners should know they are hearing advertising before the claims. No single phrase is prescribed, but the average listener must recognise the commercial message in context.

Copy Advice can reduce risk, not eliminate it. Its view is not binding on CAP or the ASA, and it does not guarantee that a host read will avoid a complaint or adverse ruling. Check the revised script, the host's evidence and the final disclosure before recording and publishing.