Entrepreneurs Deborah Meaden, Peter Jones, Touker Suleyman, Tej Lalvani and Jenny Campbell assess more unusual business ideas, including a shocking display from the owner of a live anatomy dissection business and a new model of tuk-tuk that turns out to have a fatal flaw. The final presentation is for a singer-for-hire scheme, which prompts the panel to show off their own musical talents.

Entrepreneurs Deborah Meaden, Peter Jones, Touker Suleyman, Tej Lalvani and Jenny Campbell assess the profit-making potential of a father and son team's colourful wetsuits, two former politicians with ideas about alternative energy, a couple's African coffee ceremony business, and a fake tan product with a creator who has already braved the Irish version of the show.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assess the profit-making potential of more business ideas, including a keen fisherman with a plan to market his own range of bait, a pasta home delivery service, and a brother and sister with a scheme to make money out of rubbish. Evan Davis presents.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assess the profit-making potential of three more business plans, including a brand of gourmet cheesecakes, a company offering drones for hire and a blend of alcohol and beauty products involving collagen-infused gin. Presented by Evan Davis.

An inventor with a passion for pets hopes Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani will appreciate his cat whistle, while an ice-cream entrepreneur plans to tempt the multi-millionaires to invest in her coconut-based desserts. Plus, a carpenter brings the outside indoors for some fun and games.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assess the profit-making potential of more business ideas. Up for consideration are a mother and son's range of spicy street food, a range of cocktails, and a former teacher's plan for a new system to mark students' schoolwork. Presented by Evan Davis.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assess the profit-making potential of ideas for flour-free bread and hair extension storage, as well as an online business proposition from would-be entrepreneurs in the US. Presented by Evan Davis.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assess the profit-making potential of three more business ideas. This week's would-be entrepreneurs are pitching a range of green tea, a bathroom construction invention that could revolutionise the building trade, and a new type of snack.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assess the profit-making potential of a range of vegan drinks and chocolates and a condiment brand created by a visitor from Texas. Plus, two motoring enthusiasts have a business scheme in mind that offers big prizes to the consumer and potentially big profits for the investors.

A festive edition of the business ideas contest, with Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assessing the profit-making potential of ideas perfect for the Christmas season. An inventor introduces his innovative new form of Christmas tree stand, while other entrepreneurs pitch their ideas for a range of sweets and a puzzling family game. Finally, the creator of a personalised comic-book realises he must make a big personal decision if he is to secure funding.

Entrepreneurs make the pitch of their lives. A husband-and-wife team hope to toast success with a whisky-themed idea.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani test the profit-making potential of more business ideas. A Yorkshire chef showcases a range of bespoke pastries, a Dutch designer pitches a brand of eco-friendly furniture, and an entrepreneurial duo seek investment in their artisanal craft gin.

A trio of cyclists present their idea for a bike taxi service, a former dentistry student introduces a range of children's toothbrushes, and two combat experts look for funding for a new kind of protein snack bar.

Peter Jones, Deborah Meaden, Touker Suleyman, Jenny Campbell and Tej Lalvani assess the profit-making potential of more business ideas, including an eco-friendly range of body and skincare products, a divisive savoury snack, and a brand of fruit-flavoured water.