The Twentieth Century Society

Press releases

Update on Greenside

C20 puts case against demolition of a major C20 house once more. Following the earlier quashing of Runnymede Council’s… More…

Update on Greenside

As we announced back in January, our bid to get Runnymede Council’s decision to grant listed building consent to… More…

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About The Twentieth Century Society

The Twentieth Century Society is a membership organisation which campaigns for the conservation of the best C20th architecture. It was founded in 1976 as the Thirties Society and is now recognised by government and has a statutory role in the planning process. For more details, see our website,