For the final head to head, in the fight to win a ú250,000 investment, the remaining candidates go to London's Sky Garden in the City. Hoping to help the two front runners flourish are past candidates from this year, who are hand-picked to make up the teams. The grand finale is a three-day challenge, where the finalists have to bring their business plans to life in order to prove their concept has the potential to grow big. The finalists must create brands and ad campaigns before pitching to a room full of experts in City Hall.

A look back at candidates from this year's series of The Apprentice who fell before the final hurdle. They redesigned five-star hotel rooms in a shade of trifle, sang at a Wembley FA Cup final, programmed robots to 'downward dog' and trained dogs to do a hoedown. With the help of some previously unseen boardroom insights, Lord Sugar leads viewers through the best and worst decisions made by the candidates. He looks back on the bust-ups in the boardroom and explains how he came to decide who should be fired.

The final five candidates are summoned to Lord Sugar's newly refurbished offices in the City, where they are joined by some of Lord Sugar's closest associates, who are ready to put the candidates through their paces in the toughest of interviews. Each candidate goes head to head with a business heavyweight and attempts to prove their worth in the fight of their lives.

As Lord Sugar's search for his next business partner nears its finale and just two tasks remain, this in-depth look at the real people behind the final five candidates reveals where their drive and ambition hascome from, as well as what makes their business brains tick. Featuring interviews from family, friends and loved ones, along with Lord Sugar's trusted aides Baroness Karren Brady and Claude Littner, this programme delves into the candidates' backgrounds and remembers their peaks and troughs throughout the process so far, as they attempt to get one step closer to Lord Sugar's cash.

Lord Sugar tasks the candidates with becoming fashion agents, selling garments for designers. They must select a designer, plan and organise a catwalk show and put together a magazine cover to supplement their sales campaign. One team's lack of fashion sense leads to handbags at dawn, and a no-frills magazine pitch ruffles a few feathers. A bad negotiation leaves the other team exposed, and further embarrassment comes from mismatched information about their chosen designer. In the boardroom, Lord Sugar decides who is no longer on trend.

Lord Sugar tasks the candidates with cooking up a concept for a new recipe kit. Half-baked branding and kitchen nightmares result in sour pitches. Then in the boardroom, one candidate is toast.

Lord Sugar tasks the candidates with proving their pedigree by running their own doggy service businesses. Based at an established pooch-pampering venue, the teams must tempt discerning dog owners to part with their cash for services aimed at their four-legged friends.

Lord Sugar instructs the candidates to create advertising campaigns for a brand new car. The teams take two paths - one half produce a television advert, while the other create a digital billboard advert. Both teams must then pitch their finished campaigns to industry experts.

Lord Sugar sends the candidates off to Bruges, Belgium, where they are tasked with creating a high-quality tour of the city that cruise ship passengers would be happy to pay good money for. Back on the ship, the teams must flog souvenirs to guests to top up their profit margins.

As Lord Sugar celebrates his 70th birthday, the contestants are tasked to a shopping spree across London to purchase items that mark milestones in his life and career. The candidates have one day to find nine specific items at the best possible price, before meeting at the House of Lords. For one team, there is confusion over the mystery object, while poor planning leaves the other team lagging behind. In the boardroom, Lord Sugar gives out warnings, as well as hefty fines, before sending one contestant home

As the competition continues, Lord Sugar instructs the candidates that this week's task is to set up and run a corporate box, and sell merchandise to the masses at the Women's FA Cup Final at Wembley Stadium in London. The team members chosen to organise the boxes meet their match when they come face to face with the clients and their negative comments. The following day at the big game, guests in one of the corporate boxes are unhappy as supplies run dry, while those selling merchandise outside struggle with last minute pricing strategies

The candidates are summoned to London's new Design Museum, where Lord Sugar assigns them a robot-themed task. For one half of each team it is time to get creative and programme a prototype robot, while the other half must sell toy robots.

For week two, Lord Sugar summons the candidates to Stoke Park, an impressive five-star hotel, and they learn that they will be working as interior designers. They need to make over a bedroom at the hotel and pitch their design to the hotel manager and a leading interior designer. Getting a look that is worthy of a five-star hotel is important, but the teams also need to keep one eye on their profit margin.

Under the scrutiny of Karren Brady and Claude Littner, the candidates are put to the test with their first task, rising before dawn to manufacture burgers. The teams have just one day to turn their meaty burgers into a healthy profit by selling them to hungry Londoners.