Theo Paphitis was the first investor to join the regular Dragon's Den panel after the original series.
The inaugural UK panel featured Peter Jones, Duncan Bannatyne, Rachel Elnaugh, Doug Richard and Simon Woodroffe. Theo Paphitis joined the programme in the second series, making him the first addition to the regular line-up after that opening panel.
Paphitis is a retail entrepreneur best known for businesses including Ryman and Robert Dyas. His television role added another prominent retail perspective to the panel, particularly during pitches involving consumer products, shops and distribution.
The panel changed frequently over the life of the programme, which can make the order of arrivals easy to mix up. Deborah Meaden joined later, while other investors such as James Caan and Hilary Devey appeared in subsequent line-ups. The question concerns the first regular replacement or addition, not the first person to appear as a guest investor.