| S Hasanov Barbers Ltd | Other services | 2023 |
| S W Props Limited | Information & communication | 2013 |
| S&P Trade Services Ltd | Wholesale & retail | 2025 |
| S. & J. Project Management Ltd | Professional & scientific | 2007 |
| S. Garden Ltd | Administrative & support | 2023 |
| S.T.R. Mobile Ltd | Administrative & support | 2006 |
| SA Ltd | Extraterritorial | 2009 |
| Saal International Limited | Wholesale & retail | 2005 |
| Sackville Rogers (Bury Farm North END) Limited | Construction | 2023 |
| Saentis Limited | Financial services | 2021 |
| Saffron Academy Trust | Education | 2011 |
| Saffron and Sage Limited | Wholesale & retail | 2020 |
| Saffron Asset Management Limited | Real estate | 2003 |
| Saffron Autos Ltd | Wholesale & retail | 2002 |
| Saffron Bathrooms Ltd | Wholesale & retail | 2022 |
| Saffron Brickwork Limited | Construction | 2017 |
| Saffron Building and Renovations Limited | Construction | 2019 |
| Saffron Business Development Consulting Ltd | Professional & scientific | 2020 |
| Saffron Cooling Services Limited | Construction | 2026 |
| Saffron Design and Create CIC | Education | 2023 |
| Saffron Educational Trust | Education | 2009 |
| Saffron Electrical Limited | Construction | 2020 |
| Saffron Fish Co Limited | Wholesale & retail | 2021 |
| Saffron Hall Limited | Professional & scientific | 2012 |
| Saffron Health Education Ltd | Education | 2025 |
| Saffron Homebirds Ltd | Health & social care | 2025 |
| Saffron Hydrofarms Limited | Agriculture & fishing | 2019 |
| Saffron Jetwashing Ltd | Administrative & support | 2023 |
| Saffron Mortgage Finders Limited | Extraterritorial | 2020 |
| Saffron Music Trust | Education | 2013 |
| Saffron Opera Group Limited | Arts & recreation | 2013 |
| Saffron Operational Trading Limited | Education | 2011 |
| Saffron Pizzeria Limited | Hospitality | 2024 |
| Saffron Property Consultancy Limited | Professional & scientific | 2021 |
| Saffron Recycling Limited | Water & waste | 2025 |
| Saffron Services Ltd | Construction | 2015 |
| Saffron Sports Ltd | Wholesale & retail | 2009 |
| Saffron Support Ltd | Health & social care | 2019 |
| Saffron Swimming Pools Limited | Manufacturing | 2015 |
| Saffron Tea Party Company Ltd | Manufacturing | 2021 |
| Saffron Versatile Scaffolding Limited | Construction | 2021 |
| Saffron Walden & District Riding for the Disabled Group | Arts & recreation | 2012 |
| Saffron Walden Accountants Ltd | Real estate | 2019 |
| Saffron Walden Business Centre Limited | Real estate | 1988 |
| Saffron Walden Business Improvement District Limited | Other services | 2018 |
| Saffron Walden Community Cinema Limited | Arts & recreation | 2005 |
| Saffron Walden Enterprises Limited | Wholesale & retail | 2025 |
| Saffron Walden Garden Centre Ltd | Wholesale & retail | 2024 |
| Saffron Walden Golf Club Limited | Arts & recreation | 2020 |
| Saffron Walden Heritage Development C.I.C. | Arts & recreation | 2025 |
| Saffron Walden Initiative Limited | Other services | 1997 |
| Saffron Walden Jewellers Limited | Wholesale & retail | 2021 |
| Saffron Walden Museum Society Limited | Arts & recreation | 2008 |
| Saffron Walden Nails and Spa Ltd | Other services | 2024 |
| Saffron Walden Osteopathic Clinic Ltd | Health & social care | 2013 |
| Saffron Walden Properties Limited | Real estate | 1953 |
| Saffron Wellness Ltd | Health & social care | 2015 |
| Saffron Wholefoods Ltd | Hospitality | 2016 |
| Sage and Saffron Wine Ltd | Wholesale & retail | 2025 |
| Saltstone Design Ltd | Professional & scientific | 2025 |
| SAM Estates Ltd | Households | 2012 |
| Samareline Limited | Administrative & support | 2020 |
| Sammon Mortgage Management Limited | Financial services | 2009 |
| Sammon Property Limited | Real estate | 2018 |
| Sams Shop Ltd | Extraterritorial | 2021 |
| Sandra Jane at Home Limited | Wholesale & retail | 2011 |
| Sanpsūkhé Ltd | Health & social care | 2023 |
| SAP Techno Consultants Ltd | Information & communication | 2019 |
| Sapphire Developments Limited | Wholesale & retail | 2000 |
| Sapphiros U.K. Ltd | Information & communication | 2022 |
| Saraco Engineered Solutions Ltd | Extraterritorial | 2019 |
| Sarah Brown Interiors Limited | Professional & scientific | 2020 |
| Sarah Vaughan Limited | Information & communication | 2013 |
| Sarp Barber Shop Ltd | Other services | 2018 |
| Sarparah Ltd | Wholesale & retail | 2021 |
| Sassens Executive Transitions Ltd | Extraterritorial | 2011 |
| Savvy BM Systems Limited | Professional & scientific | 2026 |
| SAX & Bongos Ibiza Sound Ltd | Administrative & support | 2022 |
| SB Civil Engineering Limited | Construction | 2012 |
| SB Land & Buildings Limited | Real estate | 2018 |
| SB Landscaping Limited | Professional & scientific | 2025 |
| SB Leisure Limited | Hospitality | 2014 |
| SB Sheds & Fencing Limited | Construction | 2013 |
| SBP Developments Limited | Construction | 2018 |
| SBS (Warehousing & Logistics) Ltd | Transport & logistics | 2021 |
| SCA Products (UK) Limited | Manufacturing | 1981 |
| Scail Limited | Professional & scientific | 2025 |
| Scede Limited | Administrative & support | 2013 |
| Scede People Limited | Professional & scientific | 2023 |
| Scede Technology Limited | Information & communication | 2024 |
| Scmh Consulting Limited | Health & social care | 2022 |
| Scorpion Oceanics (Cambridge) Ltd | Professional & scientific | 2013 |
| Scorpion Oceanics Limited | Manufacturing | 1995 |
| Scorpion Oceanics Norfolk Ltd | Professional & scientific | 2019 |
| Scorpion Oceanics Saffron Walden Ltd | Professional & scientific | 2019 |
| Scorpion Propco Holding Ltd | Real estate | 2021 |
| Scott Field Communications Ltd | Professional & scientific | 2025 |
| Scott-Reid Solutions Ltd | Professional & scientific | 2005 |
| Scribble and Smudge | Arts & recreation | 2009 |
| Scribo Solutions Ltd | Professional & scientific | 2017 |