It's the penultimate heat with three new designers battling it out for a place in the second round and the chance to go on to win The Great Interior Design Challenge. This time the amateur designers will be working in pretty workers' cottages on a Dutch-influenced crescent in the model village, Port Sunlight. They will have £1000, three days and the help of a builder to transform a master bedroom each. Mehul from London draws on his heritage and love of all things industrial to answer his brief for a restful scheme. Mum-of-one Kelly's best-laid plans are in danger of going awry when her homeowners' new bed doesn't fit in with her plans. While hairdresser Louise from Northumberland wants to use her favourite paint effects to answer her brief, even though her homeowner isn't sure. Architectural Historian Tom Dyckhoff delves into the history of the model village of Port Sunlight where each block is designed by different architecture. While judges Sophie and Daniel decide who has the design potential to go through to the next round.