The UK version of Dragons' Den originally aired on BBC Two.
The series was commissioned as a British version of a Japanese business-pitch format. Its premise was simple: entrepreneurs presented their companies to a panel of investors and sought funding, usually by offering a percentage of ownership. The BBC used the programme to combine business information with high-stakes entertainment.
BBC Two was the show's original home when it began in 2005. It later became sufficiently popular to receive BBC One broadcasts, which is why some viewers remember it primarily as a BBC One programme.
This broadcaster detail can be confused with international versions. In Canada, the comparable series is also called Dragons' Den but is associated with CBC, while the US adaptation is Shark Tank. The UK programme remains a BBC production.