The Great Interior Design Challenge: Self-Build

The fourth and final heat sees four more amateur designers take up the challenge as they each attempt to transform the bedroom of a house on an unusual self-build estate in south London, with three days, £1,000 and a small team of assistants to help deliver their projects. Tom Dyckhoff examines the history of the neighbourhood, before judges Sophie Robinson and Daniel Hopwood decide which contender is to leave the competition