The original UK launch panel of BBC's Dragon's Den had five investors: Peter Jones, Duncan Bannatyne, Rachel Elnaugh, Theo Paphitis and Simon Woodroffe.
The programme premiered in the United Kingdom in 2005, adapting the format in which entrepreneurs present businesses to wealthy investors. The panel members question each pitch before deciding whether to offer money in exchange for an ownership stake.
Simon Woodroffe, founder of the Yo! Sushi restaurant chain, was part of the first series but did not remain a regular Dragon. He was later replaced by other investors, including Richard Farleigh and Deborah Meaden.
The number five refers specifically to the original launch panel, not every Dragon who has appeared across the programme's many series. That distinction matters because the cast has changed substantially over time.