A pair of porridge entrepreneurs invite the Dragons to a teddy bears' picnic with a breakfast twist. Academic traditions are turned on their head by two graduates who are determined to disrupt a very established marketplace. An Irish inventor whose dad helped create his dream product hopes to add a new power player to the family business. And things in hot up in the Den when the Dragons meet an entrepreneur who believes the best way to drop a few inches is to wear an extra layer.

Familiar face and former Dragon Theo Paphitis makes an explosive return to the Den as he stands in for Touker Suleyman, who is recovering from a short illness. Theo Paphitis joins red-hot investors Sara Davies, Peter Jones, Deborah Meaden and Tej Lalvani in the famous chairs.

The line-up may be different but negotiations are as tough as ever as entrepreneurs pitch for the deal that could transform their businesses. Ideas include a diet plan app from an entrepreneur with a glowing record in the industry, a Cornish clothes-mending workshop, and a device that helps cyclists rescue slipped chains. Also bidding for investment is an animal-loving entrepreneur whose doggy treat range includes canine birthday cakes – but will she be celebrating?