The building's main Adam and otherwise 1930s Art Deco interiors, with some authentic frontages, mean it has been Grade II* listed since its first assessment in 1970.

This was accomplished by demolishing half of the main range of Lansdowne House, which stood since the 1760s.

[2] The venue was founded as a 'social, residential and athletic Club for members of social standing' and their families, and unlike many rivals, it had no vocational, artistic, or political 'theme'.

Its facilities include a ballroom, a terrace, a fencing Salle and a basement gym with Art Deco swimming pool.

Internally architecture is extremely unusual; some is modern for its type, being significantly Art Deco, as opposed to Georgian/Victorian/Edwardian styles.