Peter Jones is the only original Dragon's Den investor still serving on the British programme's panel.
Jones was part of the original five-investor lineup when the British series began in 2005. The other original Dragons were Simon Woodroffe, Peter Jones, Duncan Bannatyne, Doug Richard, and Rachel Elnaugh. Over subsequent series, the panel changed as investors left and new Dragons joined.
Jones became one of the programme's most recognisable figures, combining business experience with a long-running television role. His investments and questioning helped make him a central part of the show's identity, but his continuing presence is the key fact in this question.
This distinction is easy to confuse with questions about the original panel's composition. Rachel Elnaugh was the only woman among the original five, while Jones is the only member of that original group who has remained a Dragon throughout the programme's later history.