Online Video Channel

Summoned to London's oldest surviving Victorian music hall, the candidates are set a 21st-century task by Lord Sugar - create their own video channels to go live on the world's largest video sharing site, YouTube.

Aiming for the funny bone, one team opts for a channel of culinary chaos utilising the comic talents of one of their number. The others settle for fitness, but will their exercise concept work out?

In a frantic clamour for clicks the teams join forces with existing YouTube stars, grilling famous cooks and tackling teenage heartthrobs in the hope of hiking up their hits.

The final piece of the puzzle is to pitch to a website for promotion - and one hopeful delivers a most flamboyant plea...

In a brutal boardroom, the teams find out which channel went viral, and the losing team have to fight for their lives as Lord Sugar runs out of patience.

Who will survive the battle with the boss, and who will hear the fateful words, 'You're Fired!'?