Dragons' Den — Series 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 joins the fearsome five.

Among those bidding for the Dragons' investment is a Guinness World Record breaker who wants to bring the art of henna to the masses.

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 our four-legged friends, and an entrepreneur and inventor thinks she’s found a way to help maximise storage space in the home.

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 and guest Gary Neville.

A family-run business pitch their goat's milk skincare range, and a unique trail-running experience are hoping to go global. There's also 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.