When did the British television show Dragons' Den first premiere on BBC Two?

The British television show Dragons' Den first premiered on BBC Two on 4 January 2005.

The programme brought entrepreneurs into a studio to present business ideas to a panel of wealthy investors, known in the format as dragons. Contestants seek investment in exchange for an ownership stake in their company.

Dragons' Den was adapted for British television from the Japanese format Money Tigers. Its early success helped establish the programme as a long-running BBC business series, and the format was later adapted in many other countries.

The date is sometimes confused with the launch dates of overseas versions, particularly the Canadian and Australian adaptations. It also differs from the dates when individual dragons joined or left the British cast.