The British television programme Dragon's Den first aired in 2005.
The series brought entrepreneurs before a panel of investors who could question their business plans and negotiate possible deals. Its structure made commercial ideas, company valuations and equity negotiations accessible to a broad television audience.
The first British series formed part of the wider international Dragons' Den franchise. The format had already originated in Japan, but the UK adaptation developed its own identity through its panel of investors, British businesses and BBC presentation.
The year is sometimes confused with the launch dates of overseas versions or with later changes to the panel. The programme's debut belongs to 2005, while individual dragons joined and departed in different years. That distinction matters because the show has had a long run with many changing investors.