| Supercreep Management Limited | Wholesale & retail | 2016 |
| Superdeal Swanscombe Limited | Wholesale & retail | 2026 |
| Superior Renovation & Restoration Limited | Construction | 2020 |
| Superior Services UK Limited | Real estate | 1998 |
| Superspares Limited | Extraterritorial | 1981 |
| Supertraders Limited | Wholesale & retail | 2021 |
| Supplies-Supplies Ltd | Wholesale & retail | 2024 |
| Supplying Staff in Kent Ltd | Transport & logistics | 2019 |
| Support for Sport Ltd | Arts & recreation | 2011 |
| Supporting African Maths Initiatives | Education | 2015 |
| Supreme Foods (Kent) Ltd | Hospitality | 2024 |
| Supreme-Tag Infrastructure Limited | Construction | 2021 |
| Sure Speed Logistics Limited | Transport & logistics | 2022 |
| Surge Services Limited | Information & communication | 2021 |
| Surrey Gelato Limited | Hospitality | 2017 |
| Surrey Rams Basketball Club CIC | Education | 2020 |
| Surve Healthcare Ltd | Health & social care | 2022 |
| Surve Investments Ltd | Real estate | 2021 |
| Sushi by Boba Tigers Gravesend Ltd | Hospitality | 2026 |
| Sustainable Power Solutions Ltd | Construction | 2022 |
| SV 360 Videobooth Limited | Professional & scientific | 2024 |
| SVM Ltd | Wholesale & retail | 2026 |
| SW Independent Services Ltd | Other services | 2025 |
| SW Sparks Ltd | Other services | 2014 |
| Swac Limited | Hospitality | 2016 |
| Swains of West Berkshire Ltd | Construction | 2026 |
| Swale Back Pain Clinic Ltd | Health & social care | 2016 |
| Swanscombe Homes Limited | Real estate | 2022 |
| Swaped Ltd | Education | 2023 |
| Sweat Capital Holdings Ltd | Real estate | 2024 |
| Sweetbriar Court (Maidstone) Limited | Households | 2004 |
| Swegwayfun Limited | Wholesale & retail | 2017 |
| Sweyn Place Limited | Households | 1987 |
| Swift Force Haulage Limited | Water & waste | 2019 |
| Swift Force Ltd | Extraterritorial | 2025 |
| Swift Lift Ltd | Construction | 2021 |
| Swilliams Consultants Ltd | Professional & scientific | 2025 |
| Switch Disco Ltd | Information & communication | 2023 |
| Switch Security Solutions Limited | Administrative & support | 2014 |
| SWS Customs Limited | Wholesale & retail | 2019 |
| Sxdragostrans Ltd | Transport & logistics | 2026 |
| SXZ Limited | Professional & scientific | 2017 |
| Syanna Developments Ltd | Real estate | 2019 |
| Syanna Ltd | Construction | 2009 |
| Sydma Limited | Wholesale & retail | 2025 |
| Sylow Company Ltd | Health & social care | 2020 |
| Symbiosis Wholesale Ltd | Wholesale & retail | 2023 |
| Symetics Limited | Information & communication | 2026 |
| Symmetry Developments Inc Limited | Construction | 2021 |
| Symmetry Group Limited | Construction | 2025 |
| Syndale Park Sports & Leisure Limited | Other services | 2013 |
| Syndicated Commercial LLP | | 2009 |
| Syndicated Holdings Limited | Financial services | 1996 |
| Syndicated NO.2 Limited | Financial services | 2026 |
| Synergy Management Consulting Ltd | Professional & scientific | 2013 |
| Synergy New Business Consulting Ltd | Professional & scientific | 2017 |
| Synergy Surge Consultancy Limited | Professional & scientific | 2025 |
| Synova Strategy Ltd | Information & communication | 2025 |
| Synovate Consulting Solutions Limited | Professional & scientific | 2000 |
| Syntheticpower Ltd | Administrative & support | 2021 |
| Syra Solutions Limited | Professional & scientific | 2025 |
| Systeam Information Technologies Limited | Information & communication | 1995 |
| Syswire Systems Ltd | Construction | 2020 |
| T Ahmad Consultants Ltd | Information & communication | 2022 |
| T Construction Services Ltd | Construction | 2019 |
| T Dunsdon Interiors Ltd | Construction | 2003 |
| T E B Holdings Limited | Real estate | 2020 |
| T R Costruction Limited | Administrative & support | 2018 |
| T S L Environmental Ltd | Construction | 2017 |
| T T Essential Services Ltd | Health & social care | 2016 |
| T&C Foster Limited | Professional & scientific | 2017 |
| T&D Accountancy Ltd | Professional & scientific | 2013 |
| T&E Electrical Distribution Ltd | Construction | 2025 |
| T&S Accountancy Ltd | Professional & scientific | 2025 |
| T&S Family Holding Ltd | Financial services | 2024 |
| T&S Real Estate Ltd | Real estate | 2021 |
| T&T Holdings Group Ltd | Real estate | 2024 |
| T&T Incorporated Ltd | Professional & scientific | 2024 |
| T&W Cars Ltd | Transport & logistics | 2016 |
| T-Kunz Ltd | Information & communication | 2023 |
| T-Teemy Limited | Construction | 2019 |
| T.E.D. Construction Ltd | Construction | 2022 |
| T.J.Stevenson Ltd | Other services | 2025 |
| T.M.N-Construction Ltd | Construction | 2016 |
| T.O Serviced Accommodation Limited | Hospitality | 2024 |
| T1 Electrical Solutions Ltd | Construction | 2024 |
| T4 Investments (UK) Ltd | Real estate | 2011 |
| TA & a Limited | Transport & logistics | 2016 |
| TA Financial Ltd | Information & communication | 2012 |
| Tabbs Cottage Limited | Hospitality | 2020 |
| Tadas Logistics Ltd | Transport & logistics | 2017 |
| TAG Construct Ltd | Construction | 2015 |
| TAG Construction Limited | Construction | 1996 |
| TAG Tree Care Limited | Administrative & support | 2025 |
| TAG UK Services Limited | Construction | 2022 |
| TAG Welding Services Ltd | Professional & scientific | 2024 |
| Taha Barber Limited | Other services | 2021 |
| Tahw Limited | Real estate | 2020 |
| Taibolade Limited | Public administration | 2024 |
| Taiwanway International Ltd | Wholesale & retail | 2025 |