| Robinz Ltd | Construction | 2023 |
| Robot System Products UK Ltd | Wholesale & retail | 2025 |
| Rockmont Capital Ltd | Professional & scientific | 2023 |
| Rosetta Contracting Ltd | Construction | 2022 |
| Rosetta Homes (Wadesmill) Ltd | Construction | 2024 |
| Rosetta Homes Ltd | Construction | 2022 |
| Rosetta Real Estate Holdings Ltd | Administrative & support | 2022 |
| Rosetta Surveyors LLP | | 2022 |
| Ruby's WGC Limited | Other services | 2014 |
| S C Hughes Ltd | Professional & scientific | 2012 |
| S&G Property Lettings Limited | Real estate | 2021 |
| S&T J Limited | Professional & scientific | 2016 |
| S.B.S. Building Consultants Limited | Construction | 1979 |
| Sabine Consulting Limited | Professional & scientific | 2017 |
| SAE69 Limited | Professional & scientific | 2022 |
| Sagesource Ltd | Information & communication | 2021 |
| Sarah Mckie Events Ltd | Professional & scientific | 2024 |
| Sathi (UK) Limited | Wholesale & retail | 2011 |
| Sawhney Trading Company Limited | Wholesale & retail | 2001 |
| SB11 Ltd | Other services | 2024 |
| Secureness Ltd | Real estate | 2010 |
| Seriously Useful Ltd | Information & communication | 2015 |
| SH DEV 1 Ltd | Construction | 2026 |
| Short Roll Media Ltd | Information & communication | 2026 |
| Sincerus Ltd | Information & communication | 2025 |
| Skipsystem Limited | Transport & logistics | 1996 |
| Smart Ventilation Systems Ltd | Construction | 2022 |
| Specialised Storage Solutions Ltd | Transport & logistics | 2016 |
| Spice Traders Ltd | Wholesale & retail | 2025 |
| Stacey Fahey CA Ltd | Professional & scientific | 2025 |
| Stafford & Betts Interiors Limited | Manufacturing | 2017 |
| Standing Seam Solutions Limited | Construction | 2018 |
| Startin Homes Ltd | Financial services | 2026 |
| Stott Brothers Ltd | Financial services | 2018 |
| Sven Sternfeldt Ltd | Arts & recreation | 2025 |
| Swift Build Contractors Limited | Construction | 2025 |
| Swimology Ltd | Education | 2020 |
| T & Toast Limited | Hospitality | 2025 |
| Tail-Bone Cycle Cargo Systems Ltd. | Extraterritorial | 2018 |
| Targetselect Limited | Real estate | 1991 |
| TAW External Insulation & Rendering Ltd | Construction | 2021 |
| Taylor and Shaw Bespoke Properties Ltd | Construction | 2012 |
| Texcell International Limited | Manufacturing | 2015 |
| THE Barnet Studio Ltd | Other services | 2021 |
| THE Cobbold Family History Trust | Other services | 2011 |
| THE Hertfordshire Shutter Company Limited | Wholesale & retail | 2011 |
| THE M.A Bird's Nest Ltd | Real estate | 2021 |
| THE Meta Company Limited | Professional & scientific | 1995 |
| THE Mosaic Practice Ltd | Health & social care | 2018 |
| THE Two BOB Brewing Company Ltd | Manufacturing | 2019 |
| THE Wacky Barber Limited | Other services | 1999 |
| THE Yellow Butterfly Room Ltd | Administrative & support | 2017 |
| Thom Sawyer Adventures Ltd | Real estate | 2025 |
| Thornton Logistics Services Limited | Extraterritorial | 2012 |
| Thraki Ltd | Administrative & support | 2016 |
| Thuy Dung Ltd | Other services | 2025 |
| Tinsley Holdings LLP | | 2017 |
| Tita Caleiro Ltd | Professional & scientific | 2024 |
| TMS Zone Ltd | Wholesale & retail | 2019 |
| Tokenfine Limited | Real estate | 1986 |
| Top Tier Fashion Ltd | Wholesale & retail | 2023 |
| Tred Services Ltd | Professional & scientific | 2025 |
| Trend Internet Limited | Information & communication | 2021 |
| Triographics Printers Limited | Manufacturing | 2001 |
| Tutor Growth Academy Limited | Other services | 2025 |
| Twin Foxes Education LLP | | 2023 |
| Twin Foxes Residents Association NO.2 Limited | Households | 1999 |
| UA Incorporated Ltd | Financial services | 2023 |
| Unityrock Services Ltd | Construction | 2026 |
| V&R Stores Limited | Wholesale & retail | 2023 |
| Vamcro Limited | Manufacturing | 2020 |
| Vencasa Ltd | Information & communication | 2021 |
| Visight Solutions Limited | Information & communication | 2019 |
| Vitify Ltd | Health & social care | 2022 |
| Vosser Associates Limited | Professional & scientific | 2025 |
| W.J. Herbert & Sons Limited | Wholesale & retail | 2004 |
| Ware Musical Theatre Limited | Arts & recreation | 2023 |
| Watton Youth Football Club Limited | Arts & recreation | 2025 |
| WE ARE Two Consulting Limited | Professional & scientific | 2024 |
| White Pointer Consulting Ltd | Information & communication | 2014 |
| Wicked Watercolours Ltd | Arts & recreation | 2021 |
| Wildfire Caterers Limited | Hospitality | 2023 |
| Wildfire Catering Limited | Administrative & support | 2015 |
| Willow Valley Management Ltd | Real estate | 2024 |
| Willowbrook Estate Management Limited | Households | 2026 |
| Woodyard One Holdings Limited | Financial services | 2024 |
| Woolyfest Ltd | Arts & recreation | 2024 |
| Zenith Fashion Ltd | Real estate | 2001 |
| ZOE Akers Consultancy Limited | Education | 2025 |