| Rotate Control Systems Ltd | Manufacturing | 2026 |
| Roulette Media Ltd | Information & communication | 2014 |
| RPM Overseas 2 Ltd | Information & communication | 2015 |
| RPM Overseas Ltd | Information & communication | 2015 |
| Rpmg Construction Limited | Construction | 2018 |
| RPS Deal Ltd | Other services | 2023 |
| Rsclearances Ltd | Professional & scientific | 2026 |
| RSK Brickwork and Development Ltd | Construction | 2023 |
| Rusne Draz Limited | Professional & scientific | 2022 |
| Russell Solutions Ltd | Information & communication | 2007 |
| Ryan Elsam Estates Limited | Real estate | 2019 |
| S G Groundworks & Civil Engineering Ltd | Construction | 2019 |
| S P Burgess Ltd | Professional & scientific | 2014 |
| S P Daniels Limited | Construction | 2015 |
| S Potter Case Management Limited | Health & social care | 2026 |
| S W Building Services South East Limited | Construction | 2023 |
| S. E. Maven Limited | Information & communication | 2015 |
| S. Hull Limited | Construction | 2012 |
| Safety Personnel Limited | Administrative & support | 2004 |
| SAI & SAI Properties Limited | Real estate | 2007 |
| Saladfix Ltd | Hospitality | 2020 |
| Salo Media Limited | Information & communication | 2013 |
| Salon Beau Ltd | Other services | 2023 |
| Salt Oak Design Limited | Construction | 2024 |
| Samjordansales Ltd | Wholesale & retail | 2023 |
| Sandexis Medicinal Chemistry Ltd | Administrative & support | 2011 |
| Sandown Engineering Solutions Ltd | Information & communication | 2026 |
| Sandwich (Kent) Retailers Limited | Wholesale & retail | 2023 |
| Sandwich Bespoke Joinery Ltd | Construction | 2016 |
| Sandwich Grazing Ltd | Hospitality | 2025 |
| Sarah Diamond Aesthetics Ltd | Health & social care | 2020 |
| Sared Ltd | Information & communication | 2022 |
| Savoir Star Ltd | Professional & scientific | 2025 |
| Sawvision Ltd | Information & communication | 2018 |
| SB Legal Costs Limited | Professional & scientific | 2014 |
| SC Truck & Van Ltd | Professional & scientific | 2024 |
| Scissorbox Salon Limited | Other services | 2017 |
| Scott Tift Pickleball Ltd | Arts & recreation | 2026 |
| Scrap Car Co Online Ltd | Wholesale & retail | 2024 |
| Screen 4 Life ( UK ) Limited | Health & social care | 2013 |
| Sea Side Kebab Limited | Hospitality | 2025 |
| Seabrook Seaside Developments Limited | Real estate | 2015 |
| Seafire Property Ltd | Real estate | 2019 |
| Seascape (Ramsgate) Ltd | Households | 2020 |
| Seaside Store Ltd | Wholesale & retail | 2024 |
| Season Consultants Ltd | Professional & scientific | 2005 |
| Sedgefield Partners Limited | Real estate | 2021 |
| Sefton Freehold Management Ltd | Real estate | 2019 |
| Select Electrical Supplies Limited | Wholesale & retail | 2002 |
| Sendhelp Services Ltd | Education | 2025 |
| SER (Deal) Developments Limited | Construction | 2022 |
| Sgate Ltd | Information & communication | 2016 |
| Shackleton Design Consultants Limited | Professional & scientific | 2024 |
| Shakticola Associates Ltd | Professional & scientific | 2022 |
| Sharon Martin Limited | Other services | 2009 |
| Sheet Metal Magic Ltd | Manufacturing | 2021 |
| Shiruba Tree Ltd | Professional & scientific | 2017 |
| Sibs Group Ltd | Hospitality | 2025 |
| Side by Side Consulting Ltd | Professional & scientific | 2026 |
| Sika Tree Surgery Ltd | Extraterritorial | 2021 |
| Silk Moda Limited | Professional & scientific | 2018 |
| Silverback Projects CIC | Education | 2014 |
| Simon LEA Ltd | Information & communication | 2014 |
| Simon Rivers-Bland Design Limited | Administrative & support | 2012 |
| Simply Fresh Limited | Real estate | 2006 |
| SIR William Russell Flint Limited | Information & communication | 1995 |
| Sircular Clothing Ltd | Wholesale & retail | 2022 |
| Skin Laboratory Ltd | Other services | 2018 |
| Skinlab Retail Ltd | Wholesale & retail | 2024 |
| Sky Raiders Limited | Administrative & support | 2016 |
| Slaughter Creative Ltd | Professional & scientific | 2026 |
| Smartation Ltd | Information & communication | 2017 |
| Smith and Sons of Deal Ltd | Construction | 2020 |
| Smith Group (Kent) Limited | Professional & scientific | 2021 |
| Smith Property Lettings Limited | Real estate | 2024 |
| Smith Stone Installations Limited | Manufacturing | 2020 |
| Smugglers Beer and Music Cafe Ltd | Hospitality | 2019 |
| Smugglers Records Ltd | Wholesale & retail | 2018 |
| Smythe Properties Ltd | Households | 2025 |
| Sofiale Limited | Wholesale & retail | 2023 |
| Sola Consultancy Ltd | Administrative & support | 2023 |
| Solid Surface Installations Limited | Construction | 2015 |
| Solleys Farms Ice Cream Limited | Manufacturing | 2002 |
| Solleys Farms Limited | Agriculture & fishing | 2010 |
| Sootee Limited | Administrative & support | 2023 |
| Sort and Report Ltd | Professional & scientific | 2012 |
| Soul Chef Kitchen Ltd | Hospitality | 2023 |
| Soul-Trading Ltd | Wholesale & retail | 2011 |
| South Commercial Development SPV Ltd | Construction | 2024 |
| South East Roof Repairs Ltd | Construction | 2022 |
| South Road (Kingsdown) Management Company Limited | Real estate | 1979 |
| South Stone Property Group Limited | Construction | 2024 |
| Southeast (30) UK Ltd | | 2011 |
| Southern Rail Consulting Ltd | Manufacturing | 2023 |
| Spencer Private Hospitals Limited | Health & social care | 1995 |
| Spindrift Freehold Company Limited | Real estate | 2015 |
| Sprat Taps Limited | Extraterritorial | 2024 |
| ST Leonard's Road (Deal) Management Company Limited | Extraterritorial | 2002 |
| ST Michael's and ALL Angels Church Deal Management Company Limited | Households | 2003 |
| ST Monica's Road Kingsdown Deal Management Company Limited | Real estate | 2000 |