It's the third of our 8 heats as 3 new designers battle it out for a place in the quarter final and the chance to win The Great Interior Design Challenge. This time our amateurs are taking on very unusual and rather beautiful homes in Beckenham, Kent. Built in the 1930's, these homes are classic Art Deco design, blocky, bright white with a touch of Hollywood glamour. The rooms our amateurs are being asked to redesign are Sun Rooms at the very top of the houses. Surrounded by glass they create a unique challenge for the designers. Executive Assistant Louise hopes her 1930's cocktail bar will do the trick; student Charmaine wants to win with her office design. Artist Amy is going all out with her Miami beach theme but with the homeowners being happy with the design being a crucial part of the criterion for winning, will she be able to convince them that gold and purple are the colours to go for? But with only 48 hours, £1000 and the help of a builder there's a lot to do and only one designer will be able go through to the quarter finals. Architectural Historian Tom Dyckoff discovers the history of the homes and the influences of Art Deco, as Judges Sophie and Daniel decide who has the winning design.