Dragons' Den: Pitches to Riches returns to relive extraordinary encounters between brave entrepreneurs and those formidable Dragon investors. Den expert Richard Osman guides us through the most outstanding, shocking and emotional pitches of the last two years.

Richard catches up Caner Velli, who dazzled the Dragons with his liquid repelling product, we see the pun toting duo from a pork scratching company in their new HQ and Peter Jones visits the Dhillon family, who left the Den with a trio of Dragon investors in their boot cleaning brush, but have they all gone from pitch to rich?

The Dragons ponder the investment potential in pop-up inflatable igloos, a meat-free hot-dog restaurant concept and a canine poop-scooping device. Will the Dragons find the product barking, or will dog-lover Deborah Meaden be tempted to take a punt?