Peter Jones has appeared in the most series as a Dragon on the British TV series Dragons' Den.
Jones joined the original panel when the programme began in 2005 and became its longest-serving investor. His background includes entrepreneurship and investments in businesses across technology, retail, media and consumer products. On the programme, he is especially associated with detailed questioning about sales, margins, valuation and growth.
Several other investors have been important to the show's history, including Duncan Bannatyne, Deborah Meaden, Theo Paphitis and Touker Suleyman. However, their appearances began later or covered fewer series than Jones's long-running tenure.
The programme's panel changes over time, so viewers sometimes identify the longest-serving Dragon by the investor they saw most often in a particular era. The stable historical answer is Peter Jones, who was part of the original 2005 line-up and remained a regular Dragon for many years.