The Advertising Standards Authority (ASA) regulates advertising across various media in the UK, except for TV and radio which are regulated separately. It operates through self-regulation and adjudicates complaints, seeking to resolve issues and ensure advertising complies with its code of standards. The ASA can require advertisers to withdraw or modify non-compliant ads and in serious cases may restrict an advertiser's privileges or refer matters to legal authorities. A recent TV ad campaign was changed after receiving complaints about its use of offensive language.