IAA UK | 5,674 followers on LinkedIn. UK's Only Global Trade Association Supporting Marketing, Advertising & Media Professionals & Companies | The International Advertising Association brings together over 4000 members from advertisers, agencies and media owners in over 76 countries, who rely on the IAA to keep them informed, share their ideas, enable global networking and support their common interests. The IAA UK Chapter is one of the largest and most successful chapters of this global business association, and produces each year a programme of business lunches, panels and events featuring prominent advertising practitioners, as well as prominent social and charity events for the advertising industry. IAA members understand the whole equation of advertising and the wider role it plays in the world, with support from our global association.