The Twentieth Century Society

"Twentieth Century Architecture" redirects here. For this period in architecture, see Category:20th-century architecture.

The Twentieth Century Society
AbbreviationC20
Formation1979 (as The Thirties Society)
Headquarters70 Cowcross Street, London
Director
Catherine Croft
Chairman and Trustee
Hugh Pearman
President
Catherine Slessor
Websitec20society.org.uk

The Twentieth Century Society (abbreviated to C20), founded in 1979 as The Thirties Society, is a British charity that campaigns for the preservation of architectural heritage from 1914 onwards. It is formally recognised as one of the National Amenity Societies,[1] and as such is a statutory consultee on alterations to listed buildings within its period of interest.

  1. ^ "Amenity Societies and other Voluntary bodies". historicengland.org.uk. Retrieved 20 May 2023.