| NS Precision Limited | Manufacturing | 2006 |
| Numzel Ltd | Professional & scientific | 2024 |
| NWH Aero Consulting Limited | Manufacturing | 2016 |
| Ocmis (Holdings) Limited | Real estate | 2014 |
| Odysseus Consulting Services Limited | Professional & scientific | 2024 |
| Office Transformation Limited | Construction | 1986 |
| Old Glove Factory Management Company (Somerset) Limited | Real estate | 2021 |
| Old Twine Works Design Limited | Professional & scientific | 2011 |
| OM Civils Ltd | Administrative & support | 2022 |
| OM Groundworks & Surfacing Ltd | Administrative & support | 2014 |
| Optech Performance Limited | Manufacturing | 2016 |
| Orchard View (Stembridge) Management Limited | Households | 2021 |
| Original Variation Ltd | Information & communication | 2020 |
| OUR Bookkeepers Ltd | Professional & scientific | 2008 |
| OUT of the Forest Theatre Ltd | Arts & recreation | 2019 |
| Owen EV Ltd | Construction | 2021 |
| P & P Trade Windows and Doors Limited | Construction | 2019 |
| Parrett House Catering Ltd | Hospitality | 2012 |
| Paul & Matthew Day Architecture & Design Ltd. | Professional & scientific | 2025 |
| Paul Day Architectural Designs Limited | Professional & scientific | 2009 |
| Paul Hart Welding Limited | Manufacturing | 2001 |
| Peter Beckey Landscaping Ltd | Agriculture & fishing | 2014 |
| Petter Court Limited | Real estate | 1985 |
| Pinnacle Accountancy Services (SW) Ltd | Professional & scientific | 2008 |
| Pinnacle Associates (Assessment) Limited | Professional & scientific | 2007 |
| Pirates of the Carabina Circus | Administrative & support | 2016 |
| Pride Project Management Ltd | Construction | 2020 |
| Priory Court Residence Management Company Ltd | Extraterritorial | 2000 |
| Procure to Compete Ltd | Professional & scientific | 2025 |
| Protective Coatings Limited | Wholesale & retail | 1957 |
| QHA Cert Ltd | Professional & scientific | 2025 |
| R7X Ltd | Professional & scientific | 2025 |
| Radiant Bloom Limited | Health & social care | 2025 |
| Rattlesnake Aviation Ltd | Transport & logistics | 2003 |
| RAY COX Consultancy Limited | Professional & scientific | 2018 |
| Raymar Flats (Management) Limited | Real estate | 1988 |
| Reach Alternative Education SW Limited | Education | 2017 |
| Reach Partners CIC | Education | 2022 |
| Read & Co. Martock Ltd | Professional & scientific | 2022 |
| Remind Therapy Ltd | Education | 2026 |
| Retromania Limited | Professional & scientific | 2020 |
| RJ Foyle Limited | Construction | 2003 |
| RKW Aviation Consultancy Ltd | Administrative & support | 2024 |
| Robert Shire Financial Consultancy Limited | Financial services | 2017 |
| Rochassons Development Limited | Construction | 2017 |
| Rock Solid Production Events Limited | Arts & recreation | 2014 |
| Rockin Daddys Emporion Community Interest Company | Information & communication | 2023 |
| Romax Window Frames Limited | Manufacturing | 2007 |
| ROY Legg Limited | Manufacturing | 1999 |
| RPM Lifts Limited | Professional & scientific | 2023 |
| Rural Developments (Somerset) Limited | Real estate | 1971 |
| S & J Home Services Ltd | Construction | 2022 |
| S Richards Plastering Ltd | Construction | 2025 |
| S&N Pubs Limited | Hospitality | 2017 |
| Secret Recipe (Wells) Ltd | Hospitality | 2026 |
| Sedgemoor IT Solutions Ltd | Information & communication | 2019 |
| SEN Kebaba Ltd | Hospitality | 2025 |
| Sewards Blinds Ltd | Construction | 2025 |
| Shallack Developments Limited | Construction | 2017 |
| Silvertrees Web Development Ltd | Information & communication | 2022 |
| Silvertrees Web Hosting Ltd | Information & communication | 2022 |
| Sittingwell Ltd | Wholesale & retail | 2010 |
| SJ SLC Ltd | Professional & scientific | 2017 |
| SJW Media Sales Ltd | Professional & scientific | 2012 |
| Slade Construction (South West) Ltd. | Construction | 1986 |
| Small Blue Information Systems Ltd | Information & communication | 2004 |
| Smee's Supplies Ltd | Wholesale & retail | 2021 |
| Socialcene Ltd. | Other services | 2022 |
| Solkiki Limited | Administrative & support | 2017 |
| Somerset Fruit Machinery Limited | Professional & scientific | 1997 |
| SOS Scaffolding (SW) Ltd | Construction | 2024 |
| South Somerset Shutters Ltd | Construction | 2023 |
| Southern Holdings Limited | Real estate | 2025 |
| Southfork Caravan and Camping Ltd | Hospitality | 2023 |
| Southwest Turf Solutions Ltd | Arts & recreation | 2025 |
| Specialist Ground Investigation and Piling Limited | Administrative & support | 2025 |
| ST. Michael's Flats Management Limited | Other services | 1986 |
| Staunts on the Grass Ltd | Administrative & support | 2024 |
| Steel Fabrications (Martock) Limited | Construction | 1988 |
| Steve Rock Mechanical Services Ltd | Construction | 2014 |
| Steve's Windscreens Ltd | Wholesale & retail | 2011 |
| Swift Groundworks Ltd | Construction | 2016 |
| Systemica Ltd | Administrative & support | 2008 |
| T & P Accountants LLP | | 2016 |
| T.R.H. Sampson Associates Limited | Construction | 1972 |
| Technology for Aerospace Control Ltd | Professional & scientific | 2020 |
| THE Bloom Wine Company Ltd | Wholesale & retail | 2022 |
| THE Colour Activist Ltd | Arts & recreation | 2021 |
| THE Hollies Hotel Limited | Hospitality | 2002 |
| THE Maker's Place CIC | Health & social care | 2020 |
| THE Rose and Crown East Lambrook Ltd | Other services | 2019 |
| THE Southfork Cafe and Deli Ltd | Hospitality | 2026 |
| Thomas Pain & Company Limited | Real estate | 2024 |
| Thoroughbred Design and Print Limited | Administrative & support | 2004 |
| Threadneedle Management Company (Somerset) Limited | Real estate | 2010 |
| TIM Hart Welding Ltd | Manufacturing | 2023 |
| TIM Maddams Field Sports Ltd | Arts & recreation | 2019 |
| TIM Pridmore Limited | Construction | 2002 |
| Tony Williams Accident Repairs Ltd | Wholesale & retail | 2015 |
| Town Tree Landscaping Limited | Construction | 2023 |