| Marchant-Holliday School Limited | Education | 1959 |
| Mashook Limited | Hospitality | 2012 |
| Mendip House Management (Templecombe) Limited | Households | 2023 |
| Mere Towbar and Caravan Ltd | Manufacturing | 2025 |
| Midnight OIL Design Ltd | Professional & scientific | 2016 |
| Milam Consultancy Limited | Professional & scientific | 2019 |
| Moaning Toad Ltd | Hospitality | 2019 |
| Morgan Interactive Limited | Information & communication | 1994 |
| MTF Consultancy Ltd | Professional & scientific | 2022 |
| Mwtso Ltd | Professional & scientific | 2015 |
| My Harbour Ltd | Information & communication | 2026 |
| N D Jeans Engineering Ltd | Manufacturing | 2012 |
| NAT Capital Limited | Administrative & support | 2017 |
| Natural GAS Vehicle Association Limited | Energy | 1992 |
| NC Assets Ltd | Financial services | 2016 |
| New Designer Homes Limited | Construction | 2002 |
| Newmeric Ltd | Information & communication | 2019 |
| Night Doble Limited | Professional & scientific | 2015 |
| Nurix Ltd | Wholesale & retail | 2023 |
| Oden Holdings Limited | Administrative & support | 2012 |
| Oden Services (UK) Limited | Information & communication | 2007 |
| OML Limited | Administrative & support | 2017 |
| One Health Enterprise Network CIC | Professional & scientific | 2025 |
| OPH Nominees Limited | Professional & scientific | 2008 |
| OPH Option Company Limited | Professional & scientific | 2008 |
| Orchardley Group Ltd | Real estate | 2019 |
| Orchardley Holdings Ltd | Real estate | 2019 |
| Orchid Carpet Cleaning Ltd | Administrative & support | 2009 |
| Organic Power Holdings Limited | Professional & scientific | 2024 |
| Organic Power Indonesia Limited | Water & waste | 2024 |
| Organic Power International Limited | Professional & scientific | 2008 |
| Organic Power Scotland Ltd | Professional & scientific | 2008 |
| Organic Power UK Limited | Professional & scientific | 2003 |
| Osna PBL Ltd | Wholesale & retail | 2026 |
| Pcphoto Ltd | Professional & scientific | 2009 |
| Peter Jackson Funeral Services Ltd | Other services | 2013 |
| Pilot X Limited | Information & communication | 2012 |
| PO Stores (Henstridge) Ltd | Wholesale & retail | 2025 |
| Poppet Development Ltd | Real estate | 2020 |
| Precision Clutch Components Limited | Wholesale & retail | 1984 |
| Preston Cherry LLP | | 2013 |
| Proframe-Xl Ltd | Construction | 2011 |
| Protomuse Ltd | Other services | 2019 |
| Purple Serpent Ltd | Health & social care | 2024 |
| PXL Talent Group Limited | Administrative & support | 2025 |
| PXL Talent Ltd | Administrative & support | 2018 |
| Razzle Dazzle Services Ltd | Water & waste | 2012 |
| Read Engineers Ltd | Manufacturing | 2021 |
| Red MUD Limited | Manufacturing | 1993 |
| Reform Limited | Construction | 2023 |
| Reform Talent Ltd | Professional & scientific | 2025 |
| Rewom Ltd | Information & communication | 2025 |
| RHM Estates Limited | Agriculture & fishing | 2024 |
| RHM Forestry Limited | Agriculture & fishing | 2024 |
| RHM Holdings Limited | Financial services | 2024 |
| RHM Horses Ltd | Agriculture & fishing | 2024 |
| Riverside Organisation Group Ltd | Administrative & support | 2020 |
| Rnaautoworks Ltd | Professional & scientific | 2026 |
| Rung Heating Supplies (Holdings) Limited | Real estate | 2017 |
| Rung Heating Supplies Limited | Construction | 1968 |
| Sacker Gooding Limited | Extraterritorial | 2006 |
| Sbrant Holdings Ltd | Real estate | 2026 |
| Self-Build-Pro Ltd | Construction | 2011 |
| Serenyx Capital Management Ltd | Financial services | 2024 |
| Skytypers UK Ltd | Professional & scientific | 2022 |
| Skytyping UK Ltd | Professional & scientific | 2022 |
| South Cheriton Garage Limited | Wholesale & retail | 2003 |
| South West Pitch Services Ltd | Administrative & support | 2025 |
| Sport Insight Limited | Administrative & support | 2008 |
| Stanley Family Trading Limited | Construction | 2024 |
| Tacsol Ltd | Manufacturing | 2026 |
| Taurus Brickwork Limited | Construction | 2000 |
| Taurus Carpentry Services Limited | Construction | 2019 |
| Taurus Cleaning Solutions Limited | Administrative & support | 2016 |
| Taurus Construction Services Group Limited | Financial services | 2016 |
| Templeplace Limited | Real estate | 2000 |
| THE Anaerobic Digester Company Limited | Professional & scientific | 1995 |
| THE Paint People Animation Limited | Information & communication | 2017 |
| THE Somerset Engine Company Limited | Manufacturing | 2021 |
| This Living Place CIC | Professional & scientific | 2024 |
| TOM Peacock Property Ltd | Real estate | 2020 |
| Toomer Tree Services Limited | Administrative & support | 2022 |
| Touch Distribution Limited | Transport & logistics | 2015 |
| Triptych Antiques Ltd | Wholesale & retail | 2026 |
| Tytradingfx Ltd | Wholesale & retail | 2025 |
| Van Demons 2020 Ltd | Wholesale & retail | 2021 |
| VDL 1150 Ltd | Construction | 2005 |
| Vipsecurity Systems Limited | Administrative & support | 2023 |
| W.S. Scrap Metals Limited | Wholesale & retail | 2012 |
| Waverley Farm Court Management Ltd | Real estate | 2020 |
| WE Stoop NOT Ltd | Real estate | 2026 |
| Westcountry SEN Ltd | Education | 2017 |
| Whiteacre Planning Limited | Professional & scientific | 2014 |
| WX5 Limited | Real estate | 2026 |