Series Nine of Dragons' Den concludes tonight as the final set of hopeful entrepreneurs ready themselves to face the five multimillionaire investors. It's been an action-packed journey so far, with innovative ideas, fierce negotiations and deals in the making; and tonight's episode is no different.

A young businessman from Lancashire hopes to convince the Dragons to part with the biggest cash investment ever achieved in the Den and increase the fortunes of his family's shoe business; a Scottish surveyor pitches her kitchen product which was inspired by a knight in shining armour; and two ambitious friends think they've devised the next Rubik's cube, which they present with some imaginative theatrical mimes. Show less