When an influencer post, a social ad or a poster is challenged, the body that usually responds is not a government department. It is the Advertising Standards Authority (ASA), part of a system that the advertising industry set up and funds, but which is meant to judge complaints independently. This is called self-regulation. This guide explains the idea as the ASA describes it in its own account of “how the system works”: who the main bodies are, how the system is paid for, what happens to those who break the rules and where the law steps in. It is an explanation of structure, not a view on whether the model works well.
What does “self-regulation” mean here?
In the ASA’s own words, the self-regulatory system “comprises three bodies”: the Advertising Standards Authority (ASA), the Advertising Standards Board of Finance (ASBOF) and the Committee of Advertising Practice (CAP). It says the strength of the system “depends on the long-term commitment of all those involved in advertising, promotions and direct marketing”, and that practitioners share an interest in seeing that marketing is welcomed and trusted. If marketing communications are offensive or misleading, the page says, they “discredit everyone associated with them and the industry as a whole”.
So the idea is that the people who advertise, and the media that carry adverts, accept rules and a referee, because trust in advertising benefits the whole industry. The rules are set out in the UK Code of Non-broadcast Advertising, Direct and Promotional Marketing, known as the CAP Code.
Who does what?
The ASA’s page describes each body.
| Body | Role, as described |
|---|---|
| ASA | Established in 1962 to give independent scrutiny of the system. Promotes and enforces standards, investigates complaints and acts in the public interest. |
| ASBOF | Sets the framework for industry policy making, is responsible for CAP and funds the system. |
| CAP | Creates, reviews and amends the Code, gives advice and training and oversees sanctions operated by its members. |
The ASA says it is a limited company and is independent of both the Government and the marketing business. Its Chairman is appointed by ASBOF but is unconnected with the marketing business, and most of the 12-member Council is also unconnected with it. Council members sit as individuals, vacancies for independent members are publicly advertised and members serve for a maximum of two three-year terms.
How is the system funded?
The page says the system is funded principally by a levy on advertising and direct marketing expenditure, collected by ASBOF. It adds that ASBOF’s members are advertisers, promoters and direct marketers, their agencies, the media and the trade and professional organisations of those businesses. The separation of operation and responsibilities is described as helping to ensure that “the independent judgement of the ASA is not compromised”.
For readers, this is the central structural point. Money comes from the industry; judgements are made by the ASA Council, which the page describes as independent. Whether readers consider that arrangement sufficient is a matter of opinion, which this guide does not address.
What is the CAP Code, and who writes it?
CAP’s role, according to the page, is to ensure that marketing communications within the Code’s remit that are commissioned, prepared, placed or published in the UK comply with the CAP Code. It creates, reviews and amends the Code, and produces Help Notes with detailed guidance on sectors or subjects the Code covers only generally. It also runs a website with advice and “Ad Alerts”.
CAP also provides what the page calls CAP Services: advice, training seminars and online resources to help practitioners stay on top of the rules. A Copy Advice team gives bespoke advice on whether marketing is likely to conform before it is published. The emphasis on prevention is part of the model: the page says CAP places “great emphasis on the prevention of breaches”.
Our explainer on influencer disclosure rules describes the labelling guidance that sits alongside the Code, and the guide to how the ASA handles complaints follows a single complaint through the process.
How are disputes judged?
The page explains that the ASA investigates complaints from any source against marketing in non-broadcast media, and that the ASA Council judges whether marketing communications breach the Code. It says the ASA Council and CAP “form an independent judgement on any matter reported to them after they have considered the Executive’s recommendation”, and that rulings are published weekly.
The system also includes Panels, groups of industry experts and, in some cases, a Council member, which help interpret the Code and offer a forum to reassess advice. The parties to a complaint can request a Panel assessment before the Council rules, and the Council will take the Panel’s opinion into account, but the page says the “Council’s judgement on the interpretation of the Code is, however, final”. There is also an independent review procedure, in which the Council can be asked in exceptional circumstances to reconsider its ruling.
The page also sets out who bears responsibility. Marketers “bear principal responsibility” for the marketing they produce and must be able to prove the truth of their claims to the ASA. Agencies must create marketing that is accurate and ethical. Publishers and media owners recognise that they should only disseminate marketing that complies with the Code, and that responsibility extends to any other agent involved in producing, placing or publishing it.
What sanctions exist?
A self-regulatory system has no courts, so its sanctions are practical. The page describes several:
- Amend or withdraw. If marketing breaks the Code, the marketer is told to amend or withdraw it. The page says most do.
- Publicity. “The principal sanction available to the ASA is the unwelcome publicity that could result from the rulings it publishes weekly.” Marketers who do not amend their own non-compliant material on their own website or other online space under their control may face more publicity, including being named on a dedicated section of the ASA website.
- Ad Alerts. CAP may tell its members, including the media, to consult Copy Advice before accepting adverts or, in some cases, to withhold their services from non-compliant marketers or deny them advertising space.
- Trading privileges. CAP trade associations and professional bodies may withdraw or withhold recognition or trading privileges, with examples including agency recognition and bulk mailing discounts. In exceptional cases members may expel companies.
- Pre-publication vetting. The ASA and CAP may require persistent offenders to have some or all of their marketing vetted by CAP’s Copy Advice team until satisfied of future compliance.
The page says the ASA and CAP “do not adopt a legalistic attitude towards sanctions” and aim to ensure they are proportionate and effective, focusing on getting non-compliant marketing amended, withdrawn or stopped quickly.
Where does the law come in?
The ASA’s page is clear that self-regulation operates inside the law, not instead of it. It says the Code “was designed and has been developed to work within and to complement those legal controls”, and that it provides an alternative and, in some instances, the only means of resolving disputes about marketing. It says many matters, such as taste and decency, are very difficult to judge in law but affect consumer confidence.
The page describes a “legal backstop”. The system is recognised by the Government, the Competition and Markets Authority, Trading Standards and the courts as one of the “established means” of consumer protection in non-broadcast marketing. If certain types of marketing, including misleading ads, continue to appear after the Council has ruled against them, the ASA can refer the matter to Trading Standards for action under the Digital Markets, Competition and Consumers Act 2024 or the Business Protection from Misleading Marketing Regulations 2008. The page also notes that marketers who break the law risk criminal prosecution or civil action, and that matters that principally concern a legal dispute will normally need to be resolved through law enforcement agencies or the courts.
Some aspects, it says, are governed by legislation enforced by local authority trading standards officers, such as product packaging, weights and measures and the safety of products. Our guide to the CMA’s Green Claims Code is an example of regulator guidance that works alongside advertising rules.
What about advertising from other countries?
The page says most EU member states and many other European countries have self-regulatory organisations broadly similar to the UK system, and that they belong to the European Advertising Standards Alliance (EASA), of which the ASA is a founder member. It says EASA acts as a focal point for cross-border complaints, so a consumer needs to complain only to the self-regulatory organisation in their own country, no matter where the marketing originated.
What are the strengths and limits of the model?
The ASA’s account suggests some features that supporters and critics might each point to, described here neutrally:
- Speed and flexibility. The page stresses resolving problems quickly, often by persuasion and agreement.
- Prevention. Advice and pre-publication Copy Advice aim to stop problems before publication.
- Dependence on cooperation. The system relies on advertisers, agencies and media accepting it; where they do not, sanctions work through other businesses and the legal backstop.
- Funding structure. The levy comes from the industry, with separation intended to protect the ASA’s independence.
- Scope. The system covers marketing within the Code’s remit; other matters belong to other regulators and the courts.
The page itself predates some legal changes: it refers to both the Digital Markets, Competition and Consumers Act 2024 and, elsewhere, to the Data Protection Act 1998. Readers who need the current legal position should check the up-to-date rules.
Why does this matter for creators?
For creators and brands, the practical point is that a post can be an advertisement and can be judged under the Code, and that the process, sanctions and appeal routes are set out publicly. Our guide on creator contracts discusses clauses about who is responsible for labelling, and the guide on how brands choose influencers notes why compliance records matter to brands. Understanding the structure of self-regulation helps explain why rulings are published, why Ad Alerts exist and why the same rules apply to a global brand and to an individual creator.
This article is general information based on the ASA’s published description of the system, read on 13 October 2026. It is not legal advice. Rules, bodies and legislation change; check the ASA’s website for the current position.
