Dragons' Den viewers have complained that the BBC show needs a new permanent investor rather than a string of guests each week. The popular programme has returned for a new series, but Dragon Sara Davies has stepped back from the Den, leaving an empty seat alongside Deborah Meaden, Peter Jones, Touker Suleyman and Steven Bartlett. Instead of filling it with a permanent investor, the series will feature guest Dragons. Last week saw REFY co-founder and CEO Jenna Meek join the panel, while former