In the series finale, products pitched to the Dragons include online hypnobirthing platforms, a unique building system, a plant-based chewing gum and bespoke ring-making kits.

A pair of optometrists hope the Dragons will see a bright future in their blue-light filtering products, and an eco-entrepreneur pitches a carbon-offset trading app.

Hoping to strike a deal tonight are the musical inventor of a drumming training device and an LA-born entrepreneur with a culinary alcohol product range.

Pitches include a selection of premium spiced rums, a nursing bra designed to help mothers and babies breastfeed effectively, and a heatless hair-curling device.

There's an explosive start to a pitch when a father and daughter duo demonstrate their airbag safety equipment, and a couple pitch their anti-roll changing mat for babies.

A London-based entrepreneur with an assortment of naturally derived sugar alternatives hopes he can pull off a sweet deal, while a couple face a roasting over their optimistic projections for their vitamin-infused coffee. Multimillionaires Peter Jones, Deborah Meaden, Touker Suleyman, Tej Lalvani and Sara Davies are also approached by an inventor who hopes to fix a deal with her portable children's suction mats and consider investing in a business selling innovative eco-cleaning products. Presented by Evan Davis.

Entrepreneurs pitch plantable children's books, an at-home private chef service, luxury home fragrances and scent-detection courses for dogs.

Pitches include a premium whisky subscription business, an easy-assemble lighting system and a clever sand-removing powder.

A plucky entrepreneur pitches an idea for genetically personalised meal shakes, and the Dragons are put to the test by the founders of a virtual escape-room business.

A pitch for a music-sharing app is brought down to earth, the Dragons interrogate an idea for an ethical clothing verification platform, and there's an emotion tale behind a range of active shapewear.

A 29-year-old tech enthusiast is confident that his clever way of monetising people's personal online data will spark interest with the Dragons.

Featuring the inventor of a nifty construction bracket, a tech entrepreneur with a fitness app aimed solely at women, and a Scottish dog lover with a range of natural doggie treats.

Products pitched to the Dragons this time include organic superfood powders, a low-calorie craft lager, a plaque-detecting dental app and a range of afro and curly hair products.

A husband-and-wife team put the needs of NHS workers at the heart of their skin-care business, but will their altruistic approach go down well?