A former professional boxer spars with the Dragons, charming them with his no-nonsense pitching style, and isn't afraid to get down and give them twenty. A twenty-seven-year-old from County Down faces some tough questions over his valuation at ten times the revenue he is forecasting, not a thing that traditionally endears an entrepreneur to an investor.

And it's all too much for one emotional entrepreneur who struggles to hold back the tears when pitching her new hairstyling concept.

Plus, a Warrington-based chip shop owner showers the Den in confetti, three friends from North London perfect the art of miming in their pitch, and the multimillionaire investors find themselves singing about vegetables.

A Welsh grandmother has the Dragons in fits of laughter as she cooks up a storm and offers a percentage in her food loving website. Usual Den rules are blown out the window when a Tyneside couple pitch their innovative haircare brand for children, and the man who has built the world's biggest sand sofa tries his luck for investment.

Elsewhere, Peter Jones tries out an interactive game in a urinal, Deborah Meaden tries lava bread for the first time and Hilary Devey reveals what a multimillionaire's horse eats for breakfast.

Eight more intrepid entrepreneurs brave the Den hoping to gain a major cash boost for their business idea. It's a tense place to pitch with so much at stake, and these Dragons are famously hard to impress. The hopefuls will need to hold their nerve if they wish to succeed in getting the investment they require to take their business to the next level.

A horror story writer attempts to scare the Dragons into investing, but doesn't quite get the reaction he expects, in fact it's a reaction never before seen in the Den. There's a blast from the past as two Mancunian sisters who first walked up those infamous stairs back in 2005, are now asking for investment in their new gluten free oriental dipping sauce range, but will it be a case of better luck second time around? And with the kids all back at school, two friends hope now is the right time for investment in their innovative children's backpack designs - have they got what it takes to part five of Britain's most successful business men and women from their hard-earned cash?

Also pitching to the multimillionaire investors is a Northern Irish inventor with his unique range of wearable luggage, and love is in the air when two Dragons tie the knot using a rather unusual vending machine.

The Dragons' competitive natures are put to the test when the Den is turned into a game show set, as a former chat show host seeks investment for her television quiz idea. Although she has experience in this area, will the Dragons think the price is right? A 22-year-old student from Bolton surprises the Dragons with his unbridled enthusiasm for the UK's car parking industry, and a father and son from Yorkshire cause consternation among the multimillionaire investors with their firm, no-nonsense negotiating style. Also pitching for investment in the Den are a samba band, flowering tea and a man washing his hair with the help of a fully working shower.

Two graduates aim to impress the Dragons with their update to a 200-year-old invention, a product they believe creates a whole new way of advertising on Britain's streets. Will the pair's futuristic demonstration be enough to secure the cash they desperately need, or will the investors spot a fatal flaw? A beauty lover from Birmingham pitches possibly the smallest product ever seen in the Den, and a Lancastrian father of three has some explaining to do when his business building wooden huts comes under close scrutiny from the five multimillionaires. Other ideas seeking investment in Den include a multi-directional paint brush, a solution to the troublesome problem of 'pillow slippage' and a taxi driver's security invention, which is put through the Theo Paphitis break test.

It is another busy week in the Den as eight more entrepreneurs pitch to the Dragons for a cash injection in their money-making ideas. Often, a visual aid helps get across what is being pitched, and this time there is a plethora of props to help the multimillionaires understand the commercial potential of the businesses on offer. A ballroom dancer turned inventor brings a bit of sparkle into the Den via a tango and a glitter ball; Theo Paphitis and Peter Jones crawl into a new concept for the camping industry; and a labrador called Margot helps to sell the idea of doggy ice cream. Also in the Den: a world kickboxing champion, two Welshmen with their celebrity-backed toffee vodka, and three friends from London who hope to capitalise on empty loft space.

Dragons' Den is where life-changing business deals are made. The five multimillionaire investors are looking for the next big money-making ventures, so any attempt by an entrepreneur to deflect a question or change the subject can lead to some choice words and a quick exit. This week in particular the Dragons seem to have got out of their million pound beds on the wrong side. Tempers flare when one entrepreneur offers just one per cent of his business, valuing it at 15 million pounds; hackles are raised by a toastmaster from Staffordshire looking for investment in his 'male intimate wipes'; and the Dragons live up to their name when deciding whether to invest in an online store for second-hand goods. But can any turn it round and secure the investment they need? Also facing the Dragons are a TV stuntman pitching his horror-themed paintball experience, a husband and wife with a new DIY product and a man from Birmingham who believes his darts invention is a world first.

The Den is down a Dragon as Hilary Devey is temporarily absent, however while only four multimillionaire investors preside over proceedings, they are as keen as ever to find the next big thing to back with their hard-earned cash. In this episode recorded before his own heart scare, Duncan Bannatyne and his rival Dragons get to see how a doctor, a nurse and a paramedic would treat a cardiac arrest in the Den. Plus a nervous Aldershot butcher seeks investment in his award-winning sausages, and a father and daughter team from Hertfordshire showcase their troop of drummers. Also in the Den, a first time inventor advises how to keep dry while cleaning your car wheels, a former teacher asks the Dragons to make origami puppets, and an inanimate object speaks for itself and asks for £50,000.

Business pays no mind to age. A bright idea can strike at any time of your life, and just as long as it's profit-making, it should pique the interest of the multimillionaire investors. The entrepreneurs pitching to the Dragons tonight have over 60 years difference in age between them, but will any of them succeed in securing investment? On tonight's programme, a Birmingham-based nurse with a love for hats demonstrates her toilet product; a product designer, who's travelled all the way from Singapore, pitches his new tablet computer; and a husband-and-wife team from Bradford try to convince the Dragons that their caravan covers are really something to get excited about. Also in the episode: a Halifax mother of two with her oven cleaner, an invention from an airline pilot that can tow children, and a four-year-old boy pitches for a seventy-five-thousand-pound investment and a bag of sweets.

With the Den nearing the end of the series, time is of the essence for the next set of entrepreneurs pitching to the Dragons for a life-changing investment. Who will succeed where so many others have failed? Security is needed as one Cambridge-based entrepreneur is overwhelmed by paparazzi when pitching his new business idea, a keen golfer presents his very special glove, and a Nottingham-based couple want to take a slice of the UK's seven billion pound DIY market with their update on the simple paint brush. Also this week; a driving school for 14-year-olds, an electronic bed stored in your ceiling, and two friends hoping to make money out of thin air.

The Den doors are closing after another record-breaking series, and despite the recession the five multimillionaire investors have dug deep to pledge 1.75 million pounds to some of the UK's brightest businesses. In the final episode of the series, two friends hope the Dragons are in the party spirit as they tempt them with their frozen cocktails, a keen sailor demonstrates a nautical use for part of his car, and Peter Jones meets his namesake pitching a safety product for babies. Plus, a device to stop your tights falling down, an inflatable Christmas tree, and a beekeeper complete with a swarm of bees.