Which Dragon became known for saying “I’m out” on the BBC programme Dragon's Den?

Duncan Bannatyne became especially associated with saying “I'm out” on the BBC programme Dragon's Den.

In the programme's negotiation format, a Dragon who does not want to invest typically announces that they are out. Duncan Bannatyne became strongly identified with the phrase because of his direct style and frequent use of it during pitches. The expression became part of the show's recognizable television language.

Bannatyne was one of the original Dragons in the British series. He built a business career in areas including health clubs and hotels before joining the investor panel. His blunt reactions made him one of the most recognizable figures in the programme's early years.

The phrase is not an exclusive legal catchphrase belonging only to Bannatyne; other Dragons also use it when declining an opportunity. Bannatyne is the investor most commonly linked with the memorable delivery and association.