It's the penultimate of the eight heats as three more designers fight it out for one of the last places in the quarter-finals. This time the programme has travelled to Berrylands in the heart of London's suburbia. The owners of these classic semi-detached 1930s homes are hoping the three amateur designers will bring new life and vigour to their front sitting rooms. Architectural historian Tom Dyckhoff discovers the history of the homes and the circumstances that led to their build. Judges Sophie Robinson and Daniel Hopwood will be looking to see who as the potential to go through to the next round. Pub landlady, 43-year-old Paula from Herefordshire, is more used to doing up the interiors in the pubs she and her husband have lived in over the years. Creating an interior for someone else proves a real test of her confidence as she has to make the decisions on colour, fabric and built-in storage for the homeowner, and hope she is getting it right. 40-year-old textile designer Helen from Devon finds she has to confer with her owner nearly every step of the way before finally being allowed to create her South African-themed scheme. The third contestant is 44-year-old painter and decorator Johnny, he's used to doing the work on other people's design ideas and now he's got to create and pitch his own; but keen to prove he is more than just a decorator his complicated shelving scheme might be over ambitious. But only one can go through to the quarter-finals and this time Sophie and Daniel are finding it particularly hard to choose.