In this semi-final, two designers transform two rooms in modern town houses in Bristol. Judging them are regulars Kelly Hoppen and Daniel Hopwood and guest judge Michelle Ogundehin, editor in chief of Elle Decoration. One semi-finalist attempts a very intricate hand-painted mural across all the bedroom walls, but can they deliver precision in the ever-decreasing time limitations? Meanwhile, a designer's plans are seriously thrown into question with their demanding client's ever-changing needs. Architectural historian Tom Dyckhoff looks at his favourite buildings in the series, exploring the subject of Modernism, its European origins and this very complex type of architecture.