British entrepreneur Theo Paphitis left the Dragons' Den investor panel in 2013.
Paphitis was one of the programme's prominent investors and appeared on the panel for several years. He was known for his retail and business background, including his association with the high-street retailer Ryman.
His departure was part of the normal evolution of the series, in which the panel has changed as investors joined, left or returned. A dragon's departure does not end that person's business career; Paphitis continued his business and media activities after leaving the programme.
The year can be confused with the arrival of other investors. The panel's changing membership makes cast chronology especially important: Paphitis left in 2013, while later additions such as Kelly Hoppen joined around the same period.