The RSC is rebuilding its main stage, Elizabeth Scott’s Royal Shakespeare Theatre, necessitating a temporary home for the company during the four year construction period. It is designed to be re-locatable and if not re-cyclable. From the Eiffel Tower to the Millennium Wheel, architecture has been enriched by temporary structures. With this one many of the best qualities of the design are grounded in its impermanence. Ian Ritchie has built his structure of Cor-ten steel, a material whose soft rust-red patina is quite at ease with the brick and tile of the surrounding buildings. The best lies within however. The RSC has used the auditorium as a full scale, 1000-plus seat mock-up and it breaks new ground for this style of performance space.