On what date did the British television programme Dragon's Den first air on BBC Two?

The British television programme Dragon's Den first aired on BBC Two on 4 January 2005.

The series brought entrepreneurs before a panel of wealthy investors, known as dragons, who could offer their own money in exchange for a share of a business. It was produced for the BBC and became one of the UK's best-known business reality programmes.

Its launch followed the international spread of a Japanese-originated format, but the British version developed its own familiar panel, presentation style and vocabulary. The programme is often confused with its later spin-offs and overseas adaptations, which have different launch dates.

The 2005 premiere marks the beginning of the regular British series, rather than the date of a later anniversary special or a repeat broadcast. BBC Two remained the programme's principal home for many years, helping establish it as a recurring fixture in British factual entertainment.