This is all I could find. Not sure which one he was?
"The Dragons are: Simon Woodroffe, the man behind Yo! Sushi and
whose brand includes clothing,Yo! Japan, Publishing Yo! and YOTEL!;
Rachel Elnaugh, an ex-accountant and creator of Red Letter Days, now estimated to be worth around £25m; Duncan Bannatyne OBE, a former ice cream van owner who now owns a chain of health clubs and who is estimated to be worth around £130m; Peter Jones, who set up the Phones International Group and is now worth more than £300m; and Doug Richard, who sold his first software company for over $14m and is now the owner of Library House."