The advertising and marketing industry is a large sector in the UK economy, generating £6.2 billion annually. It ranges from creative agencies to sales departments and offers many career opportunities, including in brand management, advertising, direct marketing, marketing communications, and public relations. Some major companies within this sector include AMV BBDO, the largest advertising agency in the UK, and Aegis Group PLC, which has five network agencies and is a wholly owned subsidiary of Dentsu. Advertising and marketing can also be linked to other industries like interactive media, where ads are placed on websites and social media, and photography/photo imaging to take product pictures.