This year's 16 candidates set sail from Portsmouth, their first task being to come up with marketing campaigns for a new cruise liner.

The teams must design an electric toothbrush aimed at children aged between six and eight, as well as an accompanying app that encourages them to brush their teeth.

The candidates' next task is creating and branding a new non-alcoholic drink and hosting a launch event where they will be pitching and selling to leading retailers.

The candidates enter the choppy waters of the fish business, sourcing a catch of the day and creating a fish dish to sell to the public.

The teams' next task is to create their own computer game and pitch their concept to a panel of hugely successful games investors.

In a tourist hot-spot in north Wales, the candidates run their own highland railway, quarry tour and zip line.

The candidates gear up to design, brand and pitch their own electric driverless vehicle.

The remaining candidates lay on a racing-themed corporate away day at Silverstone, including a tour, a racing experience and food and drink.

The teams are set one of their most intense challenges yet: to sell live to the nation on one of the country’s leading TV shopping channels.

Lord Sugar summons the remaining candidates to KidZania in west London, where he reveals that their next task is to create and brand a new baby food.

The remaining candidates face the scrutiny of Lord Sugar’s most trusted advisors, who are primed to pick apart their business plans. Only two can proceed to the final.

Lord Sugar looks back on the candidates who fell before the final hurdle and the tasks that took them to the brink.

The two finalists each have three days to launch a new company. They must create branding for their business, produce a digital billboard and a television advert, then pitch it to Lord Sugar.