Russell Square Underground Station

Russell Square Underground Station is a two-storey building featuring a steel frame clad in brick, faced with ox-blood red faience produced by the Leeds Fireclay Company Limited. The exterior has a symmetrical design with four main pilastered bays arranged in a 1-2-1 pattern, alternating with half-bays and ending in half-bays at both ends. The entrance was originally located in the left-hand paired bay, while the exit, now blocked, was in the westernmost bay; the ticket hall now occupies the entire ground floor. The two western bays display original gilded raised lettering indicating the station name, while the blue tile Underground sign and lanterns are modern reproductions. The upper storey features timber Diocletian windows set in keyed semi-circular arches adorned with egg-and-dart decoration and cartouches between the springers of the paired bays, along with a modillion cornice. Each half-bay includes a deeply-hooded oeil-de-boeuf.

Inside, the ticket hall was remodeled in the 1990s and does not retain any visible original features. However, a small area of original green tiling can be found in the straight stair leading down to the spiral stair. Original tiling in turquoise, black, and cream remains in the spiral stair and lower passageways, including directional signage. The platform tiling was replicated in 2009, except for the soffit banding.