Radiant House is an architecturally notable building in Mortimer Street, in the City of Westminster, London.

It is a grade II listed building.

[1][2][3] The building was commissioned by Ernest Eugene Pither to honour the memory of Sophia Elizabeth Pither, née Bézier,[3] and it was completed in January 1915.

The building was designed by Francis Léon Pither,[2] although a plaque on the building shows "F. M. Elgood, FRIBA" as the architect.

This article about a London building or structure is a stub.