Teams face the challenge of coming up with their own mobile phone app, with each team promoting their concept to experts and bloggers at a gaming fair.
Lord Sugar has a new list for ten items, all required for the last-minute refurnishing of the Savoy Hotel before its grand reopening, with each team needing to seek out quality pieces at bargain prices.
Lord Sugar instructs both teams to each set up a beauty-treatment business within one of Birmingham's shopping centre, alongside selling a sideline of cosmetic products.
Each team faces the challenge of making a brand new type of pet food, complete with a promotional campaign, and pitching their concept to industry experts.
Each team find themselves operating a waste disposal service for two days, selling any valuable scrap they find amongst the trash that they dispose of for their customers, including from major contracts.
Creating a new type of free magazine is the basis of the next task, with each team pitching their concept to advertisers to secure sales for advertising space within.
Each team splits in half on a marketing task - one half choose British products for the other half to sell in Paris, through making appointments with potential customers.
Both teams are each given a £250 pallet of wholesale items to sell around London over two days, reinvesting in those that sell well and accumulating as much assets from stock and cash.
In their penultimate task, each team must invent a new type of fast-food outlet, operate a trial run of it with the public, before pitching their concept to industry experts.
With the final looming, comedian and Apprentice fan Dara Ó Briain gives out a guide on how a candidate should operate in the process, and become a winner.
After facing tasks as teams, the four finalists now face their final task as individuals - a series of tough, gruelling interviews with four of Lord Sugar's most trusted associates to determine who is worthy of investment.
