Which dragon left Dragon's Den after series 12 and was replaced by Nick Jenkins?

Duncan Bannatyne left Dragon's Den after series 12 and was replaced by Nick Jenkins.

Bannatyne is a Scottish entrepreneur and philanthropist who became one of the original and longest-serving investors on the British programme. He was known for direct questioning and for examining whether an entrepreneur understood the numbers behind a proposed business.

After Bannatyne's departure, Nick Jenkins joined the panel for the next series. Jenkins is an entrepreneur associated with the online stationery business Moonpig, bringing a different business background to the changing group of dragons.

The timing is easy to confuse because the programme has experienced several panel changes. Bannatyne's exit followed series 12, while other investors departed or joined in different series. Peter Jones remained the continuous original dragon, and Theo Paphitis had already left before this later transition.