It's the final of Junior Apprentice. Four tycoons of tomorrow remain to compete for the ultimate prize: a 25,000 pound tailor-made fund to kick-start their business career. The final task test the candidates' commercial nous, creativity, teamwork and potential. All have worked hard to reach this stage, but only one can become the first-ever Junior Apprentice. Lord Sugar calls the candidates to the London Aquarium's famous shark tank for their final briefing: they must develop their own brand of bottled water. In the UK, the water market is worth billions but it's already flooded with brand names. How can the teams make their brand stand out? What will it be called and which consumers will they target?