Victorian London: It’s the fourth of nine heats as three designers battle it out for a place in the second round and the chance to win The Great Interior Design Challenge. This time our amateur designers take on the open plan living and dining rooms of three Victorian terraced houses in the heart of London’s east end. They have £1,000 and three days to give the open plan reception rooms a whole new look. Artist Lucy must bring some order to her homeowners’ large eclectic collection of furniture and ornaments without losing the heart and soul of their home. Egon must design a mid-century themed room with three zones – cocktail bar, dining and lounge areas. While Charlotte has to persuade her client that her dark wall colour is the way to go for his modern masculine brief. Architectural historian Tom Dyckhoff discovers the history of the houses and the east end, while judges Sophie and Daniel watch every design detail come together, before they must decide who is good enough to win a place in the next round.