The UK television series Dragon's Den originally premiered on BBC Two in 2005.
The programme launched as the British version of a business-investment format in which entrepreneurs pitch to wealthy investors, known as Dragons. BBC Two was the channel that introduced the series to British viewers, and the programme later became one of the BBC's best-known factual entertainment formats.
BBC Two is distinct from BBC One, which is the corporation's main general-entertainment channel. Dragon's Den has also received extensive online and repeat exposure through BBC platforms, but its original broadcast home was BBC Two. The programme's title uses the British spelling “Den”; international versions often use “Dragons' Den” or “Shark Tank,” depending on the country.