The original investor panel of the British show Dragons' Den contained five Dragons.
The founding panel consisted of Peter Jones, Duncan Bannatyne, Rachel Elnaugh, Doug Richard and Simon Woodroffe. Each investor brought a different business background and personal approach to evaluating proposals.
The panel size became a familiar part of the programme's visual identity, with entrepreneurs facing several investors at once rather than negotiating privately with a single financier. Later series changed the membership, but the five-person starting lineup remains the standard reference for the show's launch.
This answer refers specifically to the original 2005 panel. It should not be confused with the number of Dragons appearing in an individual later episode, because guest and replacement investors changed the lineup over time.