Which British broadcaster originally aired Dragon's Den?

The British version of Dragon's Den originally aired on BBC Two.

BBC Two was the programme's launch channel when the British adaptation premiered in 2005. The channel became associated with factual entertainment, documentaries and distinctive reality formats, making it a natural home for a programme built around business pitches rather than conventional game-show competition.

Dragon's Den presents entrepreneurs to a panel of investors, commonly called dragons. Each entrepreneur explains the business, requests a particular investment and offers a percentage of equity. The dragons then decide whether to make an offer, negotiate terms or leave the pitch without investing.

Later scheduling and broadcasting arrangements can lead viewers to associate the programme with other BBC services, but BBC Two is the specific answer for its original British transmission. BBC One is the BBC's main general-entertainment channel, while ITV and Channel 4 are separate commercial broadcasters.