Peter Jones was the only Dragon to appear in every series of the British Dragon's Den from its start.
Jones is a British entrepreneur and investor whose interests have included technology, media, retail and property. His long-running presence gave the programme continuity as other Dragons joined, departed or returned across different series.
Being in every series is a specific programme record, not a claim that Jones made an investment in every episode or appeared in every individual pitch. The distinction matters because Dragons can be absent from particular episodes while still belonging to the regular series line-up.
Jones is also one of the original Dragons associated with the British version. His continued participation helped make him one of the show's most recognisable investors, alongside the changing group of entrepreneurs and business figures who formed the panel over time.