Oliver and Lucy sell water by the Blue Mosque, and Natalie and Dimple host belly dancing.
Oliver and Oli promote naked bar art, while Lucy and Natalie use singing waiters.
One couple puts on a Tutankhamen lecture and another organises VIP packages for tourists.
The six remaining entrepreneurs hit Naples and each pair must build businesses around the theme of food and drink.
James and Carl promote the city's only ice and bar gallery with a party at the bar and gallery itself, Jason and Dimple act as brokers for one of Naples' classiest restaurants, while Lucy and Natalie provide a menu translation service.
The four remaining entrepreneurs arrive in Bangkok and each pair must build businesses around the theme of sport and leisure.
James and Carl try to sell the concept of online ticket sales for Thai boxing, while Lucy and Natalie provide pamper parties for weary backpackers.
In the last episode of the series, the two remaining contestants head to Hong Kong, where they hope to avoid becoming the ultimate loser by creating a product range with the theme of East meets West. Both entrepreneurs decide to plunge into Hong Kong's competitive T-shirt manufacture and design sector, but they take very different approaches.