It is the semi-final and the four winning interior designers from the quarter-finals fight it out for the two places in the final and the chance to win the Great Interior Design Challenge. This time the amateurs take on four enormous front rooms in beautiful Arts and Crafts Victorian houses in Moseley, Birmingham. Architectural historian Tom Dyckhoff uncovers the history of the homes and the Arts and Crafts movement, as judges Sophie Robinson and Daniel Hopwood decide which two interior designers will be going through to the grand final. The contestants still only have 48 hours, but the money has gone up to £1,500, so the expectations are higher.