The British television programme Dragon's Den originally premiered on BBC Two.
The series first appeared in the United Kingdom in 2005 as the British version of the Japanese business-investment format Money Tigers. Entrepreneurs present business ideas to a panel of wealthy investors, known as Dragons, who may offer money in exchange for equity.
BBC Two has traditionally carried factual entertainment, documentaries, comedy and specialist programming, making it the channel associated with Dragon's Den from its UK launch. The programme later became one of the BBC's best-known business formats, but it remained identified with BBC Two rather than BBC One.
This answer is sometimes confused with BBC One because Dragon's Den became a mainstream hit and has had high-profile entrepreneurs and celebrity investors. Its broadcaster and its production location are separate facts: the programme has been filmed in different places, while its original BBC channel was BBC Two.