This building consists of a pair of angled two-storey office wings linked by a central hall where visitors are received. The typical triangular roof forms of this hall are also applied to the canteen beyond and to the porter's lodge. Offices are steel-framed with taut, basic elevations; the remaining building parts have a concrete skeleton. Heat-absorbent glass panels hang 1.25 m. in front of the south elevation. To prime the building for multiple letting, an extra storey was later added internally which left the original exterior intact. The interior, however, has been effectively ruined.