| RW Counselling Ltd | Health & social care | 2024 |
| RW Renovations Limited | Administrative & support | 2001 |
| Rwanda Action | Other services | 2008 |
| RWD Electrical Limited | Construction | 2006 |
| Rwgd Ltd | Construction | 2013 |
| Ryan Groundworks Ltd | Construction | 2017 |
| Ryan Hook Coaching Ltd | Arts & recreation | 2022 |
| Ryarsh Builders Limited | | 1977 |
| RYE Bay Trading Company Ltd | Wholesale & retail | 2010 |
| Ryomi Properties Ltd | Real estate | 2026 |
| Rzgar Property Limited | Real estate | 2024 |
| Rüya Nightwear Ltd | Manufacturing | 2025 |
| S & B Car and Van Hire Limited | Real estate | 2008 |
| S & B Developments (Kent) Limited | Construction | 2014 |
| S & B Investment Properties Limited | Real estate | 2020 |
| S & B Trade Limited | Real estate | 2016 |
| S & C Services (UK) Limited | Transport & logistics | 2003 |
| S & D Sewage Services Limited | Water & waste | 2013 |
| S & J IT Consultants Ltd | Information & communication | 2016 |
| S & J Williams Limited | Health & social care | 2023 |
| S & N Airconditioning Limited | Construction | 2010 |
| S & S Holdings (Kent) Ltd | Hospitality | 2025 |
| S & T Digital Ltd | Professional & scientific | 2013 |
| S + P Motor Services Limited | Wholesale & retail | 1992 |
| S 3 Kays Ltd | Information & communication | 2021 |
| S Accounting & Taxation Services Ltd | Professional & scientific | 2019 |
| S B Denture Design Limited | Health & social care | 2014 |
| S C Int'L Trading Ltd | Wholesale & retail | 2023 |
| S Chapman Double Glazing Services Ltd | Construction | 2012 |
| S E a Limited | Other services | 1995 |
| S F Carpentry & Joinery Limited | Construction | 2012 |
| S G Court Limited | Wholesale & retail | 2004 |
| S K Saffrons Ltd | Hospitality | 2017 |
| S Kingswood Limited | Construction | 2018 |
| S M & Associates Limited | Professional & scientific | 2009 |
| S Marsh Holdings Ltd | Information & communication | 2025 |
| S Mooney Developments Ltd | Construction | 2014 |
| S S Karaivanov Ltd | Transport & logistics | 2021 |
| S S Plant Limited | Construction | 2006 |
| S Saunders Limited | Professional & scientific | 2009 |
| S Scott Consultancy Ltd | Professional & scientific | 2020 |
| S T Fruits and Vegetables Ltd | Wholesale & retail | 2023 |
| S W Surfacing Ltd | Construction | 2003 |
| S W Yorke & Sons Limited | Manufacturing | 2013 |
| S W Yorke Investments Limited | Financial services | 2021 |
| S Z Solicitors Ltd | Professional & scientific | 2016 |
| S&A LGS Ltd | Transport & logistics | 2020 |
| S&B Trader Ltd | Wholesale & retail | 2020 |
| S&G Beauty Salon Ltd | Other services | 2019 |
| S&M Commercials (Southeast) Ltd | Wholesale & retail | 2026 |
| S&R Catering Ltd | Hospitality | 2023 |
| S&Y Security Ltd | Administrative & support | 2022 |
| S'Mores Cafe Ltd | Wholesale & retail | 2023 |
| S-Quad Digital Consultants Ltd | Professional & scientific | 2024 |
| S. C. Batt & Company Limited | Construction | 1997 |
| S. Ritzdorf Ltd | Professional & scientific | 2025 |
| S.A.R.K Hands-On Cleaning Ltd | Transport & logistics | 2020 |
| S.C.LUCADUMITRU2021 Limited | Transport & logistics | 2022 |
| S.C.MATARA2017 Limited | Transport & logistics | 2017 |
| S.E. Plant Management & Control Systems Ltd | Construction | 2015 |
| S.E.N Rentals Ltd | Real estate | 2025 |
| S.E.O Exploits Ltd | Wholesale & retail | 2014 |
| S.H. House of Meat Ltd | Manufacturing | 2023 |
| S.J. Wright Limited | Wholesale & retail | 1938 |
| S.K.Autos Kent Limited | Wholesale & retail | 2026 |
| S.R. Short Painting & Decorating Limited | Construction | 2002 |
| S.U.N. Transport Ltd | Administrative & support | 2026 |
| S.W.M.G Ltd | Information & communication | 2023 |
| S2 Blue Limited | Information & communication | 2001 |
| S4S Holdco Ltd | Real estate | 2023 |
| S9D Consulting Limited | Information & communication | 2012 |
| S9D Limited | Transport & logistics | 2024 |
| SA Autos Services Ltd | Wholesale & retail | 2023 |
| SA Compliance Management Limited | Professional & scientific | 2009 |
| SA Property Management (Kent) Ltd | Real estate | 2013 |
| SAA Spice Ltd | Hospitality | 2013 |
| Saban Productions Limited | Arts & recreation | 2026 |
| Sable & Flint Ltd | Professional & scientific | 2026 |
| Sabor From Brazil Ltd | Hospitality | 2020 |
| Sabre Kent Limited | Administrative & support | 2013 |
| Sacha Lauren Holdings Limited | Real estate | 2021 |
| Sadhu Solutions Ltd | Health & social care | 2025 |
| Safame Limited | Wholesale & retail | 2022 |
| Safe Strap Ltd | Wholesale & retail | 2025 |
| Safe Supporting Foundation C.I.C. | Health & social care | 2025 |
| Safer Care Solutions Ltd | Health & social care | 2019 |
| Safer Driver Ltd | Transport & logistics | 2023 |
| Safesite Developments Ltd | Construction | 2021 |
| Safety & Medical Ltd | Public administration | 2023 |
| Safetyhere.Com Limited | Wholesale & retail | 2003 |
| Saffran Kent Ltd | Hospitality | 2025 |
| Saffron Safeguarding African-Caribbean Communities CIC | Health & social care | 2025 |
| Safiro Ltd | Professional & scientific | 2024 |
| Safora Limited | Health & social care | 2016 |
| Safora Properties Limited | Real estate | 2018 |
| Saga Global Education Ltd | Education | 2026 |
| Sagarmatha Taekwondo Dojang Ltd | Arts & recreation | 2021 |
| Sagash Properties Ltd | Real estate | 2025 |
| Sagetarius Solutions Ltd | Administrative & support | 2016 |
| Sagewise Limited | Construction | 2006 |