Peter Jones was the youngest member of the original Dragon's Den panel when the BBC series launched.
The original panel appeared in the first British series in 2005 and consisted of Peter Jones, Duncan Bannatyne, Rachel Elnaugh, Theo Paphitis and Doug Richard. Jones was born on 18 March 1966, making him the youngest of those five investors at the programme’s launch.
Jones had already established himself as an entrepreneur in technology, telecommunications and consumer businesses. His tall stature and long-running presence on the show made him especially recognisable, but his age ranking is determined by the birth dates of the original panel rather than by his later prominence.
This question concerns the first line-up only. Later panels included investors born in different decades, so comparing the complete history of the programme would produce a different group of ages. The phrase “original panel” fixes the relevant comparison at the 2005 launch.