| Sjetec Engineers Ltd | Construction | 2026 |
| SJR Scaffolding Limited | Construction | 2021 |
| Slant Architects Ltd | Professional & scientific | 2025 |
| Smart Property Enterprises Ltd | Construction | 2023 |
| SME Performance Coaching (Europe) Limited | Professional & scientific | 2005 |
| Smithdale Millwrighting Limited | Construction | 2016 |
| Solid Creations Limited | Manufacturing | 2018 |
| Southgate & Co (Norfolk) LLP | | 2020 |
| SP3D Limited | Professional & scientific | 2005 |
| Spall's Garage Ltd | Wholesale & retail | 2022 |
| Sparkes Electrical Services Ltd | Construction | 2023 |
| Spearhead Records Limited | Wholesale & retail | 2009 |
| Spice 2020 Ltd | Hospitality | 2019 |
| Spiced Curries Limited | Hospitality | 2025 |
| Spray Chrome UK Ltd | Professional & scientific | 2015 |
| Staddle Developments Limited | Construction | 2023 |
| Station 144 Limited | Hospitality | 2024 |
| Steggles Consultancy Limited | Professional & scientific | 2015 |
| Stephen Green & Associates Limited | Professional & scientific | 2008 |
| Stepup Healthcare Ltd | Administrative & support | 2025 |
| Stones Estate Agents Ltd | Real estate | 2008 |
| Stony Lane Laboratories Ltd | Administrative & support | 2017 |
| Stormdancing Ltd | Administrative & support | 2010 |
| Strive Artists Limited | Arts & recreation | 2025 |
| Strongmar Engineering Limited | Professional & scientific | 2015 |
| Stuart Mckay Ltd | Information & communication | 2024 |
| Studio Puro Limited | Professional & scientific | 2019 |
| Studio Strawb Ltd | Manufacturing | 2026 |
| Suggitt Farm Services Ltd | Agriculture & fishing | 2011 |
| Sumac and Juno Films Ltd | Information & communication | 2024 |
| Sun Valley Cornwall Opco Limited | Hospitality | 2023 |
| Sun Valley Somerset Opco Limited | Hospitality | 2023 |
| Support Medical Group C.I.C. | Administrative & support | 2019 |
| Sureblend Limited | Wholesale & retail | 2019 |
| Susee Limited | Professional & scientific | 2003 |
| Sweaty Mama Ltd | Arts & recreation | 2016 |
| Sweetings Electrical & Engineering Ltd. | Professional & scientific | 2024 |
| Swtm Limited | Construction | 2015 |
| SYNDICATE7 Ltd | Professional & scientific | 2016 |
| T L Fixings Limited | Wholesale & retail | 2009 |
| Tarrant Valley Farming LLP | | 2020 |
| Taverham Recreational Facilities Limited | Arts & recreation | 1994 |
| TAY Investment and Development Ltd | Construction | 2022 |
| TAY Strategies Ltd | Wholesale & retail | 2020 |
| TB Security Ltd | Administrative & support | 2024 |
| TCF Sheet Metal Limited | Manufacturing | 2008 |
| Teal Press Limited | Manufacturing | 1985 |
| Technical Training Centre Ltd | Arts & recreation | 2023 |
| Tempestas Wind Limited | Administrative & support | 2015 |
| Templateto Ltd | Professional & scientific | 2025 |
| Terry Collins Consultancy Limited | Professional & scientific | 2008 |
| Tesmar Builders Ltd | Construction | 2025 |
| Tewes Dormantco Ltd | Extraterritorial | 2024 |
| THE Bramble Patisserie Limited | Manufacturing | 2024 |
| THE Broadleaf Group Limited | Professional & scientific | 2018 |
| THE Collective Edition Limited | Extraterritorial | 2024 |
| THE ELF Group Limited | Construction | 2016 |
| THE Galactic Panda Limited Partnership | | 2020 |
| THE Garden Cat Company Ltd | Other services | 2023 |
| THE Globe Trotter Bars Ltd | Hospitality | 2020 |
| THE Grange Opco Limited | Hospitality | 2023 |
| THE Grazing Garden Ltd | Hospitality | 2026 |
| THE Health & Safety Training Academy (East) Limited | Education | 2025 |
| THE Hemsbee Ltd | Hospitality | 2026 |
| THE Lighthouse, Attleborough | Other services | 2007 |
| THE Little Science Shop Ltd | Wholesale & retail | 2026 |
| THE Longhorn Farmshop Limited | Wholesale & retail | 2015 |
| THE Market Place Kenninghall Limited | Hospitality | 2025 |
| THE Mountain Outside Catering Company Limited | Hospitality | 2025 |
| THE Norfolk Academy of Gymnastics Limited | Arts & recreation | 2007 |
| THE Norfolk Construction Company Limited | Manufacturing | 2021 |
| THE Oaks (Eccles) Management Company Limited | Other services | 2000 |
| THE Oche & US Ltd | Information & communication | 2025 |
| THE Showdog Company Limited | Manufacturing | 2012 |
| THE Southacre (Attleborough) Management Company Limited | Real estate | 2003 |
| THE Specialist OCD Clinic Ltd | Health & social care | 2023 |
| THE Swan Mobile Bar Limited | Hospitality | 2025 |
| THE Village Apartments Management Company (Fleggburgh) Limited | Real estate | 2015 |
| THE Wolf Brewery Limited | Extraterritorial | 2009 |
| THE Woodcutters (GT. Ellingham) Management Company Limited | Households | 2003 |
| Theta Mind Ltd | Professional & scientific | 2025 |
| Think Design & Services Ltd | Professional & scientific | 2025 |
| Thornwood Farm Kennels Ltd | Other services | 2023 |
| Titan K9 Ltd | Wholesale & retail | 2025 |
| TLA Property Investment Ltd | Real estate | 2025 |
| Toby Design Ltd | Wholesale & retail | 2026 |
| Toby Hough Limited | Professional & scientific | 2022 |
| Tollerton Opco Limited | Hospitality | 2023 |
| Touchdown Engineering Limited | Manufacturing | 2006 |
| Tower X Limited | Information & communication | 2014 |
| Traditional Norfolk Poultry Limited | Agriculture & fishing | 2000 |
| Triple D Consulting Ltd | Information & communication | 2025 |
| Triumph Estates (Sussex) Limited | Real estate | 1972 |
| Truly Scrumptious (East Harling) Limited | Hospitality | 2024 |
| Trusting PAW Limited | Wholesale & retail | 2017 |
| Ttfin Ltd | Other services | 2018 |
| Turner GAS Plus Limited | Construction | 2012 |
| Turnpike Bunwell Management Company Limited | Households | 2020 |
| Tyres @ Orchard Ltd | Wholesale & retail | 2024 |
| T’S to PLS Limited | Wholesale & retail | 2018 |