Thames House (North And South Blocks With Bridge Link)

Thames House consists of two office blocks connected by a bridge, designed in 1928 by Sir F. Baines. It is part of a uniform design with Imperial Chemical House, located along the Horseferry Road approach to Lambeth Bridge. The building is constructed from Portland stone and granite on a steel frame, topped with leaded roofs.

The monumental office blocks and bridge-link feature architectural elements reminiscent of the Lutyens-Baker style, with a grand appearance highlighted by a steeply hipped roof and a giant order dressing the upper part of the structure. The building stands five storeys tall with a three-storey attic. The Millbank elevation showcases the South Block, which is 21 windows wide, a bridge-link that is four windows wide, and the North Block, which is 12 windows wide, along with a seven-window wide splayed corner that returns to Horseferry Road.

The ground floor is faced with granite and features principal doorways in the second bay from the bridge-link. These doorways are archivolt arched with carved spandrels and flanked by pilasters that support an entablature rising into the first floor. The doors are made of plated and panelled nickel-copper alloy, decorated with naturalistic motifs by W.B. Fagan.

The ground floor has recessed glazing bar metal casements beneath flat voussoired arches, arranged evenly across the ground floor, while the first to fourth floors are rusticated, with aedicules at regular intervals for the third-floor windows—11 on Millbank and one at the centre of the other two elevations. Above the fourth floor, there are giant quoin pilasters and an entablature.

The "top hamper" features giant order end pavilions with one window and a five-bay colonnade at the splayed corner on the sixth and seventh floors, topped with an entablature and crowning parapet. The bridge-link is slightly recessed, featuring a large archivolt and a keyed arch that rises to the second floor, with a coffered tunnel vault, rusticated spandrels, and a wall face above that includes a band of windows separated by escutcheon panels beneath the entablature carried over from the main blocks.