- A: A to Z of records
- B: A to Z of records
- C: A to Z of records
- D: A to Z of records
- H: A to Z of records
- J: A to Z of records
- K: A to Z of records
- L: A to Z of records
- M: A to Z of records
- N: A to Z of records
- O: A to Z of records
- P: A to Z of records
- R: A to Z of records
- S: A to Z of records
- T: A to Z of records
- Y: A to Z of records
- S-Well (Southend Emotional Wellbeing Service)
- Samaritans
- School Nursing Service (Southend-on-Sea)
- SEND Music Therapy at The Wave Lifestreams
- SET CAMHS (Southend, Essex and Thurrock Child and Adolescent Mental Health Service)
- Shout
- SOS Rape Crisis
- South East and Central Essex Mind
- South East Essex Epilepsy Support Group
- South East Essex Type 1 Diabetes Family Group (SEET 1)
- Southend YMCA