In the fourth episode of the fifth series, the entrepreneurs present the following ideas to the dragons:
* Recycling products.
* Easily carried spare shoes for nights out.
* Film production of a vanity-published book.
* Milk-fruit smoothies.
* Teach yourself to be a DJ.
* Car cleaning without water.
* Car boot tidy for groceries.
* Children's light switches.
* Cushion that shades you while you sunbathe.
