The Dragons revisit some of the businesses they have invested in, including a caravan sleeping bag, and share expertise on creating a successful business plan.

The Dragons share their thoughts about how the strength of an idea is the key to unlocking cash in the Den. With a look at eccentric inventor Mark Champkins, from 2007.

The Dragons share their expertise on the art of negotiation. Plus a look back at which Den entrepreneur delivered the masterclass in negotiation.

A look at the highs and lows experienced by the many entrepreneurs who have entered the Den, examining the ingredients required for a successful pitch.