Having survived seven tough challenges, this week the two finalists go head-to-head for the ultimate prize. Awaiting the winner is a career-defining contract to design an apartment for an upmarket coastal resort on the Cornish coast.Judge Michelle Ogundehin dispatches the finalists to London's vibrant Soho district, where each designer takes on the redesign of a trendy bar. Both establishments have two distinct areas in need of a makeover: a ground-floor bar that must appeal to the daytime trade and an intimate basement cocktail lounge for late-night drinking and entertaining.One finalist decides to rip out the tiki-style basement bar and replace it with some good old 1970s glamour. But it quickly becomes a demolition zone as they decide to knock down the bar completely and relocate it to the other side of the room. Unfortunately, the more they rip out, the more problems they unearth.Down the road, the other finalist is struggling with their British members club theme. Will vintage finds including giant Ibizan parasols and rattan furniture really fit with the cool chic vibe that the owner is after?To help her choose the series champion, Michelle is joined by fashion designer turned interiors expert Matthew Williamson and the owner of the London Cocktail Club, Sarah Willingham.