The Twentieth Century Society
The Twentieth Century Society is a registered charity in England & Wales working in education/training, arts/culture/heritage/science, environment/conservation/heritage, based in London.
Quick answer
Key facts
- Registered charity number
- 1110244
- Status
- Registered (active)
- Charity type
- Charitable company
- Location
- London
- Latest income (year ending 2024-12-31)
- £464,115
- Website
- c20society.org.uk
What the charity does
The Twentieth Century Society is a membership organisation, open to all, which campaigns for the conservation of the best c20th architecture. It was founded in 1979 as The Thirties Society and is now recognised by government and has a statutory role in the planning process in England. It organises lectures, conference and study tours in the UK and abroad
Registered causes
Why there's no Clarity Score yet
The Clarity Score is computed from full financial filing history. The Twentieth Century Society is on the official register but outside the detailed-filing group we currently score (or awaiting its first filings), so we show its official register record instead of a rating. Its score appears automatically once enough filing data exists — never by payment. How scoring works
Is this your charity?
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Frequently asked questions
- Is The Twentieth Century Society a legitimate charity?
- Yes. The Twentieth Century Society is a registered charity (number 1110244) regulated by the Charity Commission for England and Wales. You can verify it on the official register.
- What does The Twentieth Century Society do?
- The Twentieth Century Society is a membership organisation, open to all, which campaigns for the conservation of the best c20th architecture. It was founded in 1979 as The Thirties Society and is now recognised by government and has a statutory role in the planning process in England. It organises lectures, conference and study tours in the UK and abroad
- How can I donate to The Twentieth Century Society?
- The Twentieth Century Society's website is http://c20society.org.uk — donate there directly so the charity receives the full amount. CharityCompare never takes a commission on donations.
Source: Charity Commission for England and Wales register extract dated 2026-07-18, used under the Open Government Licence v3.0. Always verify current details on the official register entry.