It is currently occupied by De Vere Venues and also the London office of English Heritage at 1 Waterhouse Square.
It was designed in Gothic Revival style for the Prudential Assurance Society by architects initially Alfred Waterhouse and his son Paul Waterhouse who became a partner in his father's firm from 1891, and built by Holland, Hannen & Cubitts in phases between 1876[2] and 1901.
[4] The building was modified between 1930 and 1932 by E. M. Joseph,[5] who introduced Art Deco features,[6] and expanded again in 1993 by EPR Architects to a floor area of 34,931 square metres.
[6] The building originally featured a library, restaurant, chapel, hall, rooftop promenade and a women's entrance.
[6] The complex now encloses a courtyard, Waterhouse Square, named after the original architect.