The British television series Dragon's Den is aired by the BBC.
The programme began on BBC Two in 2005 and became associated with the BBC's factual-entertainment output. Entrepreneurs enter the pitch room to seek investment from a panel of wealthy businesspeople, known within the programme as Dragons.
The BBC has commissioned many series and specials while changing the panel over time. This means that a familiar Dragon may leave even though the programme remains on the same broadcaster. The channel is therefore a more stable identifying fact than any particular investor lineup.
Viewers sometimes mix the British broadcaster up with channels carrying versions in other countries. International adaptations use the same broad concept but are produced and transmitted by their own national broadcasters. The question refers specifically to the British edition.