Palladium House is a grade II listed (in 1981) Art Deco office building located on the corner of Great Marlborough Street and Argyll Street.
The building was designed in by architects Raymond Hood and Gordon Jeeves as the London headquarters of the National Radiator Company. Its design was a scaled down version of the American Radiator Building in New York City.
Built in 1929, the building is a seven-storey office block, with black granite facing decorated with an inlaid champlevé design with Egyptian influences.
It was formerly known as Ideal House.
