Theo Paphitis joined Dragon's Den as a Dragon in its second series after the original panel.
Theo Paphitis is a British-Cypriot entrepreneur best known for building businesses in retail, stationery and lingerie. He became part of the programme's changing investor line-up after the first series, bringing a background in developing and acquiring consumer-facing companies.
The distinction between the first and second series matters because the British show changed its panel as it developed. Peter Jones, Duncan Bannatyne, Rachel Elnaugh, Doug Richard and Simon Woodroffe were among the original Dragons. Paphitis was not part of that initial five-person line-up, even though he became strongly associated with the programme.
Paphitis later became known to a wider audience through television as well as business. His direct questioning and emphasis on commercial fundamentals made him a recognisable Dragon. This question concerns the timing of his joining the British series, not the date of any particular investment or the launch of one of his companies.