The Quadrant

The Quadrant is a group of offices, shops, and an arcade located on Regent Street in the City of Westminster. This structure is part of Sir Reginald Blomfield's significant redevelopment of Nash's Regent Street Quadrant, designed around 1911 and completed between 1920 and 1923. It features a stone façade and slate roofs, with a podium that includes a ground floor and mezzanine, three additional storeys, and a steep mansard roof with dormers.

The podium is characterized by bold pulvinated rustication on its piers, while the upper floors are clad in ashlar with windows framed in flat surrounds. Notable architectural details include a rich modillion eaves cornice, a continuous range of dormers, bronze cresting along the ridge, and prominent banded stone stacks with cornices. The entrance to Air Street is highlighted by a rusticated semicircular arched bridge, topped with a grand three-storey Doric columned loggia, reminiscent of Somerset House.

The design concludes with slightly protruding pavilions that have concave, pyramidal cupola roofs. The Quadrant Arcade features two-storey glass-fronted shops, separated by coupled pilasters, with Ionic pilasters on the ground floor and pilasters inspired by the Tower of Winds on the first floor. Notably, No. 68, The Café Royal, was rebuilt behind Blomfield's façade by Sir Henry Tanner from 1923 to 1928, preserving elements of the original decoration from the 1865-1872 Café Royal designed by Archer and Green, including lavish gilt caryatids and mirrors in the Grill Room.