Dragons' Den - Season 21

A sock business that employs people with learning difficulties, three second-hand luxury clothing entrepreneurs, and a pair of optical experts bid for the Dragons' investment.

The entrepreneurs seeking the Dragons' investment include a former special effects make-up artist with a natural skin care range and twins who think they've found a way to help renters get a mortgage.

For the first time in Den history the Dragons have company – guest Gary Neville. He joins the fearsome five – Peter Jones, Deborah Meaden, Touker Suleyman, Sara Davies and Steven Bartlett – to fight it out for the best investments in the Den. A former professional footballer pitches his match worn memorabilia business, while an ear acupuncture devotee wants to bring the ancient Chinese practice into the future. A Welsh husband and wife team think they've found the best way to view your favourite movie, and a spiritual entrepreneur is convinced his all-natural drink will become more popular than coffee.

More entrepreneurs sweat it out in the Den as they attempt to impress five of the smartest business minds in the country, Deborah Meaden, Peter Jones, Touker Suleyman, Sara Davies and Steven Bartlett.

The Dragons go back in time. Stone Age enthusiasts pitch their school workshops, a budding entrepreneur thinks he's spotted a gap in the market for natural ice pops, a Guinness World Record breaker wants to bring the ancient art of henna to the masses and two friends hope that diamonds are a Dragon's best friend as they seek a £250,000 investment for a share in their ethical jewellery line.

The entrepreneurs bidding for the Dragons' investment include a cat-loving inventor who thinks he's found a pain-free way to keep feline teeth clean.

The Den has a new guest Dragon, the London-born CEO behind Good American and founding partner of SKIMS, Emma Grede.

A volunteer guide dog trainer pitches her edible gift cards for four-legged friends, and a chocolatier introduces her take on two of the nation's favourite snacks.

A young entrepreneur hopes to find the Dragons' sweet tooth with his gourmet gummies, and a self-confessed eco-warrior is on a mission to turn old waste plastic into beautiful products.

Dragons' Den continues as more entrepreneurs showcase their passion and come face to face with the fiery five, Peter Jones, Deborah Meaden, Touker Suleyman, Sara Davies and Steven Bartlett. Guest Dragon Gary Neville also makes his second appearance in the Den.

Those pitching their ideas include a Sheffield-born dog lover who has an innovative take on dog treats, an eco-conscious entrepreneur who thinks he can conquer the drinks industry, a tech business that helps families living with dementia manage their spending and a couple who want to bring sports recovery to the masses.

A family-run business pitch their goat's milk skincare range, and a unique trail-running experience are hoping to go global. An inventor and entrepreneur showcases her storage-saving home invention, and there's a duo whose business could quite literally take you to space.

A thermostat for rental properties, snackable granola, a natural range of play make-up for children and a dispenser for eye drops are the investment opportunities for the Dragons.

Guest Dragon Emma Grede returns to the Den to consider the entrepeneurs' bids for investment, which include a father-and-son duo's new solution for cleaning showers.

The ideas seeking the Dragons' investment are an at-home manicure business, a range of doggie drinks, an inclusive magazine for visually impaired children and a new take on the traditional bean bag.

A Viking re-enactor with his take on mead, a husband-and-wife duo with their outdoor art, a very personal supplement, at-home manicures and a musician turned inventor.