| RGS Flooring Ltd | Construction | 2015 |
| Rising Sun (MCD) Property Limited | Real estate | 2017 |
| Rjmc Property Limited | Real estate | 2022 |
| Robinette Training Limited | Education | 2015 |
| Roger Chivers Consulting Ltd | Administrative & support | 2010 |
| Rolt Property Investments Ltd | Real estate | 2022 |
| Ronan Contracts Limited | Professional & scientific | 2023 |
| Ronobumispice Limited | Hospitality | 2026 |
| Rotorscan Ltd | Administrative & support | 2012 |
| RS Plantworx Ltd | Manufacturing | 2022 |
| Ruffle Snuffle Limited | Extraterritorial | 2016 |
| Russell White Marine Limited | Financial services | 1999 |
| Ryan Alexander Limited | Professional & scientific | 2022 |
| Ryeassic Adventure Park Ltd | Arts & recreation | 2025 |
| Ryedale Europe Limited | Information & communication | 2012 |
| S P Pearman Specialist Decorators Ltd | Construction | 2015 |
| S.Cawdery Ltd | Manufacturing | 2010 |
| Saerling Ltd | Professional & scientific | 2011 |
| Samel Investments Limited | Real estate | 2026 |
| Sandon Consulting Limited | Professional & scientific | 2015 |
| Sandon Property Developments Ltd | Construction | 2025 |
| Sarah Cocks Pilates Limited | Arts & recreation | 2021 |
| Scandinavian Pantry Ltd | Wholesale & retail | 2021 |
| Scott & Scott Consultants Limited | Administrative & support | 2017 |
| Scott and Scott Haulage Ltd | Transport & logistics | 2017 |
| SCT Catering Ltd | Hospitality | 2024 |
| Scuff Wheels Limited | Wholesale & retail | 2016 |
| SDP (Newmarket Bodyworks) Limited | Wholesale & retail | 1977 |
| SDP (Newmarket Motors) Limited | Wholesale & retail | 1973 |
| SDP Autos Ltd | Professional & scientific | 2010 |
| Select Air Conditioning Limited | Construction | 2015 |
| Serenity Pilates & Wellness Studio Ltd | Real estate | 2023 |
| SFB Contract Flooring Limited | Construction | 2015 |
| Shadow Technology (UK) Limited | Information & communication | 1992 |
| Sharon Ottley Limited | Professional & scientific | 2019 |
| Shiny Wagon Limited | Wholesale & retail | 2023 |
| Shockblock Limited | Manufacturing | 2014 |
| Shoo-Fly Limited | Professional & scientific | 2020 |
| Silk Mead Paint and Body Limited | Wholesale & retail | 2017 |
| Simon Clark Limited | Professional & scientific | 2018 |
| Simon Evans Horticultural Services Ltd | Other services | 2024 |
| Simon J Carter Limited | Professional & scientific | 2012 |
| SJ Bloxham Ltd | Transport & logistics | 2020 |
| Skyview Media Solutions Ltd | Professional & scientific | 2023 |
| SLS Property Improvements Ltd | Construction | 2023 |
| Smart Media Production Limited | Arts & recreation | 2021 |
| Smartnow Limited | Information & communication | 2015 |
| SMB C&C Ltd | Financial services | 2023 |
| Soft Numbers Limited | Information & communication | 1983 |
| Software Chalet LP | | 2022 |
| Solaflow Ltd | Professional & scientific | 2013 |
| Sona Kitchen Ltd | Hospitality | 2025 |
| Sophieos Ltd | Professional & scientific | 2018 |
| Southcrest Trading Limited | Professional & scientific | 2015 |
| Sovereign Pressure Products Ltd | Manufacturing | 2017 |
| Spencer Dean Cooper Limited | Extraterritorial | 2025 |
| Spicy Treat Ltd | Hospitality | 2023 |
| Spring Dell Management Limited | Households | 1986 |
| SSP Compliance Ltd | Public administration | 2024 |
| SSP Painting and Decorating Ltd | Construction | 2025 |
| ST George's END Management Company Limited | Households | 1993 |
| ST Maintenance Services Ltd | Administrative & support | 2025 |
| ST. Francis Park Management Co. Ltd. | Households | 1995 |
| Stagestruck Limited | Professional & scientific | 1984 |
| Stanley Close Management Company Limited | Households | 1983 |
| Star Street Management (Ware) Ltd | Households | 2025 |
| Steadnet Cyber Limited | Information & communication | 2023 |
| Steadnet Limited | Information & communication | 2014 |
| Steve Rolt Home Improvements Ltd | Construction | 2018 |
| Streamline Spraying Ltd | Construction | 2021 |
| Stride Productions Limited | Arts & recreation | 2011 |
| Surrey Leisure Group Limited | Hospitality | 2024 |
| Susie Betley Creative Therapies Ltd | Health & social care | 2026 |
| SV Conversions Ltd | Manufacturing | 2025 |
| T & C Services (1990) Limited | Administrative & support | 2007 |
| T J Polishing Ltd | Other services | 2014 |
| Tache Solutions Ltd | Construction | 2017 |
| TC Entertainment Ltd | Information & communication | 2022 |
| Team Ag(Uk) Ltd | Agriculture & fishing | 2022 |
| Team Prosail Limited | Arts & recreation | 2007 |
| Team Regenerate Limited | Professional & scientific | 2024 |
| Techbit Limited | Information & communication | 2025 |
| Technical Creative Services Limited | Other services | 1990 |
| Technivo Ltd | Other services | 2010 |
| Technology Risk Insights Ltd | Financial services | 2025 |
| Tensorlytix Limited | Information & communication | 2022 |
| Terry Shepherd Joinery Limited | Construction | 2005 |
| TFD Professional Services Ltd | Professional & scientific | 2021 |
| THE Art of Sport Limited | Arts & recreation | 2014 |
| THE Auto Valley Ltd | Wholesale & retail | 2023 |
| THE Bald Viking Beard Company Ltd | Wholesale & retail | 2021 |
| THE Bigin Events Company Ltd | Administrative & support | 2012 |
| THE Bodyshop (Fitness Centre) Ltd | Arts & recreation | 2023 |
| THE Buntingford Coffee Shop Ltd | Wholesale & retail | 2009 |
| THE Business Alliance Limited | Professional & scientific | 1988 |
| THE Cheese Plate Limited | Wholesale & retail | 2011 |
| THE Deli Inflight Ltd | Hospitality | 2022 |
| THE Excelsior Works Limited | Manufacturing | 2004 |
| THE Folly Residents Association Limited | Households | 1998 |
| THE Great Projects Ltd | Administrative & support | 2019 |