In January 2005 Bazalgette became Chairman of Endemol UK and Creative Director of Endemol Group worldwide. He was responsible for shows including "Big Brother" and "Deal or No Deal" which were hits around the world, and led Endemol's digital entertainment strategy. Although "Big Brother" was an adaption of an existing series in the Netherlands, Bazalgette is credited with popularising the format around the world thanks to the adaptations he built into the UK version. During Bazalgette's time on the global board, Endemol grew strongly and in 2005 it was launched on the Dutch stock exchange. Over the next eighteen months it trebled in value and was sold in 2007 for €3.2 billion. In September 2007 it was announced that Bazalgette was standing down as Chairman and would assume the role of advisor.