The British TV programme Dragon's Den adapted the Japanese format Money Tigers.
Money Tigers was a Japanese television concept in which entrepreneurs presented business proposals to wealthy investors. The British version retained the central dramatic structure: a founder enters a room, makes an investment request, and answers questions from a panel whose members can choose whether to participate.
The name changed for the British market because “dragons” provided a vivid metaphor for powerful investors. The adaptation was part of a wider international franchising process in television, in which a proven format is reshaped for local viewers while its core rules remain recognisable.
Money Tigers is sometimes confused with Shark Tank, the later American adaptation of the same broad format family. Shark Tank is not the original Japanese title. Nor is the British programme an original format created independently by the BBC. The specific source format named in reference material is Money Tigers, making it the canonical answer.