- The Friends of Lewes
Aims to stimulate public interest in the beauty, history and character of the town of Lewes and its surrounding area; and to organise concerted action for protecting and enhancing the townscape and for preserving free access to the surrounding area.
- Lewes Archaeological Group
Lewes Archaeological Group brings together those interested in archaeology and history in the town of Lewes and the surrounding area.
- Lewes Past
A Facebook community for sharing memories, stories, and photos of Lewes.
- Lewes Priory Trust
In 2011, the Lewes Priory Trust completed major works of consolidation and enhancement to realize the full potential of The Priory of St Pancras in Southover, Lewes, as a site of immense cultural, historic, educational and tourist importance, and to allow free access for all.
- Lewes Racecourse History
Lewes was known for its horse racing for over 200 years. There are two organisations studying the history of Lewes race course:
- Local History Online
Website of Local History Magazine, and directory of UK local and family history societies.
- Sussex Archaeological Society
In addition to opening historic properties and museums to the public, Sussex Past is active in the fields of archaeological and historical research in Sussex.
- Sussex Family History Group
The aims of the SFHG include promoting the study of genealogy and family history, and encouraging the preservation, transcription and publication of relevant documents and records.
- Sussex Heritage Trust
Established in 1977 to preserve, improve and encourage the appreciation of the architectural and natural heritage of Sussex.
- Sussex Industrial Archaeology Society
Records and studies the remains of past industries and the achievements of the people concerned with them.
- Sussex Mililtary History Society
SMHS has been interpreting the county’s military past since 1998, undertaking archaeological surveys, heritage tours, and monthly meetings in Lewes.
- Sussex Online Parish Clerks
Historical data on parishes. With a strong focus on genealogical information, the Sussex site also aims to include any historical information relating to Sussex.
- Sussex Record Society
Local history group offering research publications and online databases covering the history of Sussex from 1066 to World War I.
- Uckfield and District Preservation Society
Founded in 1968 to encourage interest in the local history and environment around Uckfield, and to encourage its preservation, development, improvement and beautification. The society protects and preserves Nutley Windmill, and Bridge Cottage Heritage Centre.