| Quayside Bar & Grill Ltd | Hospitality | 2023 |
| R.A Marketing Solutions Ltd | Professional & scientific | 2026 |
| Rage Network Holdings Limited | Professional & scientific | 2014 |
| Rapid Discovery Limited | Professional & scientific | 2022 |
| Reach Therapeutic Fostering Ltd | Other services | 2020 |
| Real Deal Marketing Limited | Professional & scientific | 2025 |
| Rebel Growth (1) Limited | Financial services | 2024 |
| Rebel Growth Limited | Professional & scientific | 2024 |
| Recor Medical Ltd | Manufacturing | 2018 |
| Regailia Properties (Lettings) Limited | Real estate | 2024 |
| Regailia Properties Limited | Real estate | 2024 |
| Regula Bidco Limited | Financial services | 2023 |
| Regula Midco Limited | Financial services | 2023 |
| Regula Topco Limited | Financial services | 2023 |
| Reham Foods UK Ltd | Wholesale & retail | 2025 |
| Remote Solutions Group Limited | Financial services | 2024 |
| Renair Antennae Limited | Manufacturing | 1990 |
| Rendezvous Pizza Co. Ltd | Hospitality | 2015 |
| Rentalstudio.Com Limited | Hospitality | 2025 |
| RHC & I Limited | Professional & scientific | 2023 |
| Richborough Farm Limited | Real estate | 2018 |
| Ripplewood Limited | Professional & scientific | 2012 |
| Rise Construction (South East) Ltd | Construction | 2026 |
| Rise Therapeutic Fostering Ltd | Other services | 2020 |
| Rmlb Design Ltd | Professional & scientific | 2014 |
| Robin Ventures Ltd | Hospitality | 2024 |
| Robinson Motors M.B. Limited | Wholesale & retail | 2011 |
| Rock Hill Cider Company Limited | Manufacturing | 2018 |
| Rogers & Co. Bookkeeping Limited | Professional & scientific | 2019 |
| Roll Play Games Ltd | Wholesale & retail | 2021 |
| Ronan Investments Limited | Financial services | 2021 |
| Rosies Retreat Ltd | Agriculture & fishing | 2023 |
| Rossi and Brace LLP | | 2021 |
| Royal Hounds Close Limited | Other services | 2022 |
| RS & RS Scientific Ltd | Professional & scientific | 2023 |
| Rumworth Consulting Ltd | Public administration | 2022 |
| RVH1 Developments Limited | Construction | 2017 |
| RVS DEV UK Ltd | Administrative & support | 2012 |
| RVS Licensee UK Ltd | Administrative & support | 2012 |
| RX Trading Ltd | Wholesale & retail | 2020 |
| S.I.P. Analytical Limited | Extraterritorial | 1980 |
| S.S.P. Specialised Sports Products Limited | Construction | 1999 |
| Saisarvajit Limited | Wholesale & retail | 2016 |
| SAM Consortium Limited | Professional & scientific | 2008 |
| Sandikent Limited | Construction | 1963 |
| Sandwice Ltd | Financial services | 2025 |
| Sandwich Bay (Residents) Limited | Real estate | 1979 |
| Sandwich Consultants Ltd | Manufacturing | 2018 |
| Sandwich Glass Ltd | Construction | 2012 |
| Sandwich Marina Group Ltd | Manufacturing | 2023 |
| Sandwich Marina Limited | Manufacturing | 2016 |
| Sandwich Property Rentals Ltd | Construction | 2022 |
| Sandwich Shores Limited | Wholesale & retail | 2024 |
| Sandwich Social Supermarket CIC | Wholesale & retail | 2020 |
| Sandwich Technology School | Education | 2010 |
| Sandwich Veterinary Centre Limited | Professional & scientific | 2012 |
| Sarre Court Birchington RTM Company Limited | Households | 2009 |
| Savon Limited | Manufacturing | 2012 |
| Scaleka Limited | Professional & scientific | 2003 |
| Schill UK Ltd | Wholesale & retail | 2019 |
| Scitegrity Limited | Information & communication | 2011 |
| Score My Practice Ltd | Administrative & support | 2025 |
| Screencancer UK Limited | Health & social care | 2015 |
| Sea Whitstable Ltd | Hospitality | 2025 |
| Sean Mega Tiling Ltd | Construction | 2026 |
| Sedden Developments Ltd | Construction | 2024 |
| Serenity Flowers Limited | Wholesale & retail | 2023 |
| SES Creative Ltd | Manufacturing | 2024 |
| Shine Therapeutic Fostering Ltd | Other services | 2020 |
| Shirley Park Delicatessen Limited | Real estate | 1972 |
| Simaco Ltd | Professional & scientific | 2025 |
| Simple Real Estate Ltd | Construction | 2017 |
| SIR Roger Manwood's School | Education | 2011 |
| Site Organiser Limited | Professional & scientific | 2010 |
| SJA Business Services Limited | Professional & scientific | 2018 |
| SJG Media (UK) Limited | Extraterritorial | 2021 |
| Slice Innovations Ltd | Hospitality | 2024 |
| Sneico UK Ltd | Wholesale & retail | 2025 |
| Social Colllective Ltd | Professional & scientific | 2025 |
| Solar Charge Energy LLP | | 2022 |
| Solidtop Roofing Ltd | Construction | 2025 |
| Sonet Digital Limited | Information & communication | 2010 |
| Songar Limited | Real estate | 2017 |
| South East Auto Parts Ltd | Wholesale & retail | 2019 |
| South East Marine Limited | Construction | 2022 |
| South East Netting Limited | Manufacturing | 2003 |
| Sparaton Limited | Hospitality | 1994 |
| Sparks Gifts Wholesalers LLP | | 2020 |
| Splitpea Productions Ltd | Information & communication | 2012 |
| Sporting Events UK Race Management Limited | Arts & recreation | 2015 |
| SPT Holdings Ltd | Financial services | 2025 |
| SRD Solutions Ltd | Professional & scientific | 2023 |
| ST George's Golf Club Trust Limited | Arts & recreation | 1907 |
| ST Johns Priory Development Limited | Real estate | 2016 |
| ST Michael's Vicarage Limited | Transport & logistics | 2008 |
| ST Oswalds Freehold Limited | Households | 2022 |
| Staple Limited | Real estate | 2000 |
| Stears Haulage Ltd | Transport & logistics | 2013 |
| Stephen Crowther Associates Limited | Administrative & support | 2009 |
| Steve Coles Limited | Administrative & support | 2010 |