| Rawcontrols Ltd | Professional & scientific | 2020 |
| Raytech Engineering Ltd | Professional & scientific | 2019 |
| RD Digital Limited | Other services | 2018 |
| REA Electricians Limited | Construction | 2015 |
| Recycled Roadways Holdings Ltd | Financial services | 2023 |
| Redefined Properties Ltd | Real estate | 2018 |
| Redefined Solutions Ltd | Information & communication | 2016 |
| Repower CIC | Professional & scientific | 2024 |
| Reset Equity Group Ltd | Wholesale & retail | 2023 |
| Right Management Solutions Ltd | Construction | 2019 |
| RJH Business Services Ltd | Real estate | 2008 |
| Road Acre Paving Ltd | Administrative & support | 2026 |
| Road Haulage Management Limited | Professional & scientific | 2018 |
| Robert Hudson Home and Commercial Ltd | Energy | 2025 |
| Rock Ferry House Ltd | Real estate | 2020 |
| Rolo Holdings (Kent) Limited | Real estate | 2023 |
| Rolo Land Limited | Real estate | 2024 |
| Roofbarman.Com Ltd | Other services | 2018 |
| Roofing Fluency Limited | Construction | 2025 |
| Root's Roofing Limited | Construction | 2024 |
| Rowland Court Limited | Households | 2003 |
| Rsbh Estate Management 2025 (Alexandra) Limited | Real estate | 2025 |
| Rsbh Estate Management 2025 (Charlotte) Limited | Real estate | 2025 |
| Rsbh Estate Management 2025 (SBT) Limited | Real estate | 2025 |
| Rsbh Estate Management 2025 (Victoria) Limited | Real estate | 2025 |
| Rsbh Estate Management 2025 Limited | Real estate | 2025 |
| Rshooter Property Limited | Real estate | 2025 |
| Rtrt Ltd | Wholesale & retail | 2025 |
| Rugged Express Ltd | Construction | 2024 |
| Russell Court Limited | Health & social care | 1988 |
| Russell J. White Ltd | Construction | 2006 |
| Ryan Demolition Services Limited | Construction | 2019 |
| S & S Managing Investments UK Limited | Real estate | 2017 |
| S E R Carpentry Limited | Manufacturing | 2019 |
| Samra Property Investment Ltd | Households | 2023 |
| Samvid-Ssk Ltd | Education | 2023 |
| Sandilands Properties London Limited | Construction | 2026 |
| Sasa Holdings Limited | Professional & scientific | 2017 |
| SC Property Holdings Ltd | Real estate | 2024 |
| Scope Home Security Ltd | Administrative & support | 2020 |
| Scott Mckechnie Consulting Ltd | Education | 2022 |
| Scrivens Excavation Limited | Construction | 2018 |
| SD LEE Ltd | Construction | 2023 |
| SDL Property Solutions Limited | Administrative & support | 2026 |
| SE Atvs Limited | Manufacturing | 2018 |
| Seabathing 1 Limited | Real estate | 2011 |
| Seabathing 12 Limited | Real estate | 2011 |
| Seabathing 2 Limited | Real estate | 2011 |
| Seabathing 5 Limited | Real estate | 2011 |
| Seabathing 8 Limited | Real estate | 2011 |
| Seabathing 9 Limited | Real estate | 2011 |
| Seawood Cathden Ltd | Financial services | 2024 |
| SEC Site Services Limited | Real estate | 1998 |
| Second Sight Business Services Limited | Professional & scientific | 2006 |
| Sedgwick Court Residents' Association Limited | Households | 1977 |
| Sentiumai Ltd | Information & communication | 2024 |
| Serviceline Ltd | Manufacturing | 2010 |
| Sevenoaks Group Limited | Construction | 2023 |
| Sevens & Classics Limited | Wholesale & retail | 2013 |
| Shebim Technologies Limited | Information & communication | 2012 |
| Shiona's by the Tipsy Bakery Limited | Hospitality | 2024 |
| Shivni Estates Ltd | Real estate | 2021 |
| Sian Formwork Trustee Ltd | Other services | 2023 |
| Sian Group Investment Holdco Limited | Financial services | 2023 |
| Sierra Corporation Ltd | Wholesale & retail | 2022 |
| Silverwood Construction Services Ltd | Construction | 2020 |
| Simran Liddar Limited | Health & social care | 2021 |
| Sinabela Associates Limited | Information & communication | 2010 |
| Sital Investments Limited | Real estate | 2023 |
| Sitheo Group Limited | Administrative & support | 2025 |
| Sivel Ltd | Wholesale & retail | 2026 |
| SJP Sian Management Ltd | Real estate | 2024 |
| Skin Hub Ltd | Other services | 2025 |
| Skreppa Ltd | Wholesale & retail | 2024 |
| Smart Broadcast Ltd | Information & communication | 2023 |
| Smart Sports Coaching Ltd | Education | 2025 |
| Sobey Homes Ltd | Real estate | 2018 |
| Sotron Ltd | Information & communication | 2014 |
| South East ARC Welding Co. Limited | Construction | 1978 |
| South East Memory Assessment Services Ltd | Health & social care | 2014 |
| South Street (Kent) Management Company Limited | Households | 2022 |
| SP Services (Kent) Ltd | Construction | 2025 |
| Spark Maintenance Limited | Manufacturing | 2026 |
| Specialist Contract Lifting Limited | Construction | 2010 |
| Speedgate Enterprises Limited | Wholesale & retail | 1974 |
| Spinney Capital Limited | Construction | 2021 |
| Spinwoods Group Holdings Ltd | Real estate | 2020 |
| Spinwoods Homes Ltd | Real estate | 2020 |
| Spinwoods Limited | Real estate | 2020 |
| SPS 23 Advisory Limited | Professional & scientific | 2025 |
| SRQ Laboratories Ltd | Wholesale & retail | 2016 |
| SRW Consultancy Ltd | Information & communication | 2023 |
| SSB Property Management Ltd | Extraterritorial | 2016 |
| Sskotwal Properties Ltd | Real estate | 2024 |
| ST Clements Lakes 297 Limited | Real estate | 2016 |
| ST Clements Lakes 361 Limited | Real estate | 2017 |
| ST. John's Park Blackheath Management Limited | Households | 1970 |
| Star Class Cars Ltd | Wholesale & retail | 2015 |
| Status Holmes Limited | Construction | 2023 |
| Steadfast Carpentry Limited | Construction | 2007 |