A Scottish entrepreneur presents a pint-sized gadget that he hopes will be big business, and a robotic invention sends the Dragons into a virtual world.

An animal lover from Canada pitches a green solution to canine pollution, and an ethically minded couple have some planet-saving ideas to transform the DIY market.

A dog-loving husband and wife duo try to collar some cash, and a mum-of-two aims to go global with her subscription kids clothing offering.

The Dragons question the expansion plans of an escape room business run by two brothers, and a former international tax lawyer offers a

bite-sized portion of her at-home teeth whitening business.

A tech expert pitches a digital solution to help the bereaved manage the affairs of the deceased, and best friends from London face a roasting over their mood-enhancing coffee products.

Two business partners offer up their planet-saving product as the solution to the plastic bag problem, and an American entrepreneur crosses the pond with her family's favourite drink.

A brewer’s high-strength hooch pole-axes a Dragon, a cruelty-free watch strap uses some surprising materials, and the makers of an eco-friendly deodorant make the Dragons jump out of their skin.

An entrepreneur unveils a device intended to prevent medical emergencies that was born out of a brush with death.

The creator of a mystery puzzle game tries to get past go, and two chocolate-mad entrepreneurs have some sweet delights in store for the Dragons.

A loved-up couple pitch their sustainable coffee from Honduras, and a fashionista presents the Dragons with her digital wardrobe app.

An Edinburgh-based duo present a luxury product for breast cancer survivors, and two familiar faces return to the Den with a sauce-squeezing solution.

Two sisters hope the Dragons will be coo-ing over their maternity wear business, and a builder who thinks he has come up with a game changer for the building trade tries to cement a deal.

Entrepreneurs pitch a moveable webcam, a men's skincare range, a caffeine chew for long-distance runners, and seasonal decorations that add diversity to the festivities.