The rooms at Ranger's House were furnished so as to evoke the rooms of Sir Julius Wernher's house in Piccadilly as it was in the 1920s. Sutton Vane Associates searched out period light fittings and designed and commissioned replicas of Edwardian and 1920s fittings. Many of the artefacts on display are delicate and have to be exhibited in low light levels with careful control of both ultra-violet and infra red radiation.