Undercover Boss (UK)

David Clarke, chief executive officer of Best Western, spends five days undercover as a new recruit in the company.

Kevan Collins, the boss of London's Tower Hamlets council, goes undercover in the housing and homeless office and alongside community law enforcement officers.

Marija Simovic, chief operating officer of Harry Ramsden's, goes undercover to find out why their 80-year-old brand is struggling.

Paul Fisher, the boss of Jockey Club Racecourses, poses as a new entry-level casual employee to find out how his company really works.

Colin Drummond, chief executive officer of Viridor, spends five days as a new recruit working at the sharp end of his business.

Narin Ganesh, finance director of Crown Worldwide, pretends to be a redundant office worker to find out the operations of the company at the ground level.

More than a year after being the first boss to go undercover in his own company for the programme Undercover Boss returns to see what lasting effect their presence has had on the company.