Founded in London, England in 1985, 19 Entertainment moved their headquarters to Los Angeles, United States, in 2010. In 2009 the company announced the purchase of London based Storm Model Management, one of the world's top modelling agencies. This business was sold back to Storm's management in 2013, ending the firm's activities in fashion.
In March 2005, 19 Entertainment founder Simon Fuller sold the company to Robert Sillerman's CKX, Inc. in a cash and stock deal worth $210 million. Subsequent to the deal Fuller remained in his role as CEO of 19 Entertainment and added the new role of director of CKX. In his dual role Fuller was able to effectively co-ordinate all creative aspects of the CKX business until January 2010 when, as he approached the end of his employment contract with CKX, Inc., he decided to start up a new business, XIX Entertainment, while still acting as a consultant to CKX / 19 and as an Executive Producer of 19's shows. Following this, CKX announced its intention to shift 19 to becoming a US business focusing solely on American Idol and So You Think You can Dance brands. 19's old Headquarters in Battersea, London became the headquarters for Simon Fuller's new business, XIX, while the base for 19 Entertainment was transferred to Los Angeles. In September 2010 much of 19's non- American Idol business was sold to Simon Fuller's new business XIX Entertainment. This included 19's non-Idol management clients such as David and Victoria Beckham, Andy Murray, Annie Lennox, The Spice Girls, Lewis Hamilton, S Club 7, Carrie Underwood, David Cook, and others. Also transferred to XIX Entertainment were Roland Mouret and Victoria Beckham's fashion businesses.
Sillerman and partners accepted an offer from Apollo Global Management on July 21, 2011 to purchase the entire stock of CKX, Inc, and the business was re-branded as CORE Media group in 2012 with 19 Entertainment becoming the group's primary west coast division.