The UK version of Dragon's Den first debuted on BBC Two.
The programme premiered in 2005 as a British adaptation of the international Dragons' Den format. BBC Two was then the BBC channel most associated with factual entertainment, reality competitions and business programming, making it the original home for the series.
The show later became strongly associated with the BBC brand more broadly, but its initial broadcasts were on BBC Two rather than BBC One. This is sometimes confused because the programme gained a large mainstream audience and was promoted heavily across BBC services.
Dragon's Den has remained a long-running BBC production, with entrepreneurs presenting businesses to investors in the hope of securing money and expertise. The channel detail refers specifically to the UK programme's original launch, not to international versions of the format.