Institute of Practitioners in Advertising: http://www.ipa.co.uk
The IPA is the trade body and professional institute for leading agencies in the UK's advertising, media and marketing communications industry, covering the Creative, Direct Marketing, Healthcare, Media, New Media, Outdoor, Sales Promotion and Sponsorship sectors.

Institute of Sales Promotion: http://www.isp.org.uk
Home site of the ISP contains numerous links.

Radio Advertising Bureau (RAB): http://www.rab.co.uk/
The RAB is funded by UK Commercial Radio stations and aims to guide national advertisers and their agencies towards effective advertising on Commercial Radio.

Audit Bureau of Circulations (ABC): http://www.abc.org.uk
An independent audit watchdog service for printed publications.

The Advertising Association (UK): http://www.adassoc.org.uk
The Advertising Association is a federation of 25 trade bodies representing the advertising and promotional marketing industries including advertisers, agencies, media and support services.

Advertising Standards Authority: http://www.asa.org.uk
The ASA is the independent, self-regulatory body for non-broadcast advertisements, sales promotions and direct marketing in the UK. The ASA administers the British Code of Advertising, Sales Promotion and Direct Marketing (The CAP Code) to ensure that advertisements are legal, decent, honest and truthful.

Ofcom: http://www.ofcom.org.uk/
This government agency licenses and regulates commercially funded television services in the UK.

Periodical Publishers Association: www.ppa.co.uk
The PPA is the association for publishers and providers of consumer, customer and business media in the UK. PPA's role is to promote and protect the interests of the industry in general, and member companies in particular.

American Association of Advertising Agencies: www.aaaa.org
Home page of the AAAA with numerous links.

European Association of Communications Agencies: http://www.eaca.be/
The European Association of Communications Agencies (EACA) is a Brussels-based non-profit organisation whose mission is to represent full-service advertising and media agencies and agency associations in Europe. EACA aims to promote honest, effective advertising, high professional standards, and awareness of the contribution of advertising in a free market economy and to encourage close co-operation between agencies, advertisers and media in European advertising bodies.

Institute of Public Relations: http://www.ipr.org.uk
The Institute of Public Relations (IPR) is the UK's leading public relations industry professional body. The site provides limited free information relating to forms' use of PR.

Institute of Direct Marketing: http://www.theidm.co.uk
The Institute of Direct Marketing is a provider of lifetime professional development services in interactive and direct marketing.

Direct Marketing Association (UK): http://www.dma.org.uk
The Direct Marketing Association (UK) Ltd is Europe UK's largest trade association in the marketing and communications sector. It seeks to protect the UK direct marketing industry from legislative threats and to promote its ongoing development.

Direct Marketing Association (USA): http://www.the-dma.org
An American association, which was established in 1917.

Interactive Advertising Bureau: www.iabuk.net
The Internet Advertising Bureau is the trade association for the internet marketing industry.

Mobile Marketing Association: www.mmaglobal.com
The Mobile Marketing Association (MMA) is a global industry trade association for companies involved in mobile marketing and associated technologies.

Mobile Data Association: www.themda.org
The Mobile Data Association (MDA) is the not-for-profit industry association dedicated to represent and promote all mobile data centric businesses.