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- Sanctuary Supported Living (Stanier House)
- SEACA Steel Here
- Shared Space
- Shoeburyness Leisure Centre
- Shoeburyness Library
- Silver Socials
- Simply Stride
- Sober Socials
- South East Essex Group of Ramblers Association
- South East Essex Organic Gardeners
- South East Essex Scottish Society
- Southchurch Hall Museum and Gardens
- Southchurch Library
- Southchurch Park Bowling Club
- Southend and District Riding for the Disabled
- Southend Bach Choir
- Southend Central Museum
- Southend Chess Club
- Southend Choral Society
- Southend Dementia Action Alliance
- Southend in Transition Community Allotment
- Southend Islamic Trust
- Southend Leisure and Tennis Centre
- Southend Mencap - 16+ Club
- Southend Mencap Advocacy Service
- Southend Mencap Showstoppers
- Southend Parks Tennis (Chalkwell Park)
- Southend Parks Tennis (Priory Park)
- Southend Photographic Society
- Southend Pier
- Southend Planetarium
- Southend Poetry Group
- Southend Round Table
- Southend Sikh Society
- Southend Theatres Community and Education Department
- Southend UFO Group
- Southend Vineyard
- St David's Lunch Club
- St Luke's community Arts and Craft Group