Building D13 is of a single phase dating to 1938. It is a fine example of a reinforced concrete building in the Expressionism style by the celebrated engineer Sir Evan Owen Williams, a pioneer in the use of reinforced concrete (Durant 1992, 200-202). The principal alterations to the factory were probably undertaken during the latter half of the 20th century when the building was converted into a storage facility which necessitated considerable alteration to the original fabric of the building and the removal of all internal fixtures and fittings relating to the production of chemicals. During recent years the in-frastructure and other buildings associated with D13 have been removed leaving the factory standing in relative isolation. (1)

<1> Trent & Peak Archaeology, 2015, Historic Building Record of Former Factory Building D13, Boots Campus, Beeston. (Unpublished document). SNT5877.