Completed in 1932. The outside of this building is sleek modernism with panels of black vitrolite -- I don't know what vitrolite is, but it just sounds like a product of the machine age. The architect, Owen Williams, was once an airplane designer.
Inside the lobby, though, is a "paean to Art Deco" designed by Robert Atkinson. with sculptures by Eric Aumonier.
The world's most astonishing banisters.
The entrance is flanked by two reliefs, showing Britain and The Empire.
More details. I love this stuff but it is so instantly evocative of one brief moment in time that it is hard for designers to re-use any of these elements in a fresh way.