IBEX House, Portsoken Street, London.
"Ibex House is probably the largest surviving example of Streamline Moderne, a short-lived form of Art Deco seen in the mid to late 1930s, and mostly used in London by an entire generation of Odeon cinemas, and most famously by the Daily Express Building.
Upon completion Ibex House boasted the longest continuous glass curtain walls in the United Kingdom along its H plan footprint.
Also cladding Ibex House are horizontal cream ceramic bands of buff, and strips of black faience running upwards adding a vertical element, plus curving corners characteristic of Streamline Moderne..
Of particular note is the curving glass staircase set on the southern side of the building that continues to project out past the upper set backs of the building. It serves not only to provide access up through the centre of the building, but unlike the identical north one, also helps work as an informal viewing area for the buildings occupants looking south towards the Tower of London and Tower Bridge."