| Conedata Limited | Information & communication | 1985 |
| CONNECT2GRID Ltd | Professional & scientific | 2016 |
| Countrywide Communications Ltd | Information & communication | 2010 |
| Courtyard Counselling & Psychotherapy Ltd | Health & social care | 2026 |
| Cowa Seita Ltd | Wholesale & retail | 2023 |
| COX Renovations Ltd | Construction | 2017 |
| CR Fire & Electrical Ltd | Construction | 2022 |
| Cricket Cubz Ltd | Arts & recreation | 2024 |
| Crossfit Solent Lymington Ltd | Arts & recreation | 2019 |
| Culshaw Holdings Limited | Administrative & support | 2004 |
| Curtis Surveying Services Limited | Real estate | 2014 |
| Cyrilian Design Ltd | Professional & scientific | 2023 |
| D G Shepherd & Sons Ltd | Transport & logistics | 2017 |
| D P Lockyer Carpentry Services Limited | Construction | 2014 |
| D.Nst Limited | Health & social care | 2026 |
| Daleshire N.I Limited | Real estate | 2025 |
| Dashing Dwellings Ltd | Real estate | 2025 |
| David Russell Property Maintenance Limited | Construction | 2011 |
| Davies Holdings (SW) Ltd | Real estate | 2024 |
| DAZ 5 Online English Limited | Education | 2025 |
| DB Commercial Interiors Limited | Construction | 2017 |
| DE Martin & Co Ltd | Professional & scientific | 2015 |
| Deltawall Limited | Professional & scientific | 2003 |
| Destiny Property Investment Limited | Real estate | 2016 |
| Dharmakaya Limited | Administrative & support | 2021 |
| Diamond Building Services Limited | Construction | 2005 |
| Direct Wills Limited | Professional & scientific | 2011 |
| DJR Cars Ltd | Wholesale & retail | 2025 |
| Dppe Ltd | Wholesale & retail | 2023 |
| Drive IT (SW) Limited | Wholesale & retail | 2020 |
| Dtis Training Solutions Ltd | Professional & scientific | 2019 |
| Durston Garden Products Limited | Wholesale & retail | 2003 |
| E Corfield Groundworks Ltd | Construction | 2021 |
| Earned Health Ltd | Arts & recreation | 2026 |
| Eclipse Technologies Group Ltd | Wholesale & retail | 2025 |
| Eco Friendly Shop (Somerset) CIC | Wholesale & retail | 2021 |
| EDZ Homes Ltd | Construction | 2025 |
| Elaina Close Management Company Limited | Households | 2020 |
| Elizabeth Anne Bridal Ltd | Wholesale & retail | 2021 |
| Elsinova Consulting Ltd | Information & communication | 2023 |
| Energy Drop Zone Ltd | Real estate | 2013 |
| Enhanced Primary Care Limited | Professional & scientific | 2017 |
| Etonhurst Estates Ltd | Real estate | 2021 |
| F.Rayn Ltd | Wholesale & retail | 2024 |
| Ferdus Limited | Wholesale & retail | 2022 |
| Findlays Barbers & Salon Ltd | Other services | 2010 |
| Food Intentions Ltd | Hospitality | 2024 |
| Food Strategy UK Limited | Construction | 2018 |
| Foot Shop Limited | Wholesale & retail | 1982 |
| Fordian Repairs and Maintenance Ltd | Construction | 2020 |
| Foster & Sims Structural Engineers Ltd | Professional & scientific | 2022 |
| Foxcombe Container Storage Limited | Real estate | 2013 |
| G Poulton Ltd | Agriculture & fishing | 2019 |
| G&R Heritage and Conservation Ltd | Construction | 2019 |
| G&R Heritage Construction Ltd | Construction | 2023 |
| Galleton Limited | Arts & recreation | 2003 |
| Gamehome Limited | Wholesale & retail | 2026 |
| Garners Fulfilment Solutions Limited | Wholesale & retail | 2025 |
| Garners Group Ltd | Financial services | 2016 |
| Garners News Limited | Wholesale & retail | 2003 |
| GC Accounting Ltd | Professional & scientific | 2012 |
| Genisys Systems Ltd | Information & communication | 2022 |
| Gibbons Building Group Ltd | Construction | 2021 |
| Gilberts Machinery Installations Ltd | Administrative & support | 2026 |
| Glaston House Management Company Limited | Real estate | 2003 |
| Glaston Road Management Limited | Real estate | 2004 |
| Glastonbury Art Limited | Wholesale & retail | 2021 |
| Glowskin TAN Ltd | Other services | 2025 |
| Goat Projects Ltd | Construction | 2026 |
| Golden CUT ST Limited | Other services | 2025 |
| Goolden Designs LLP | | 2006 |
| Gould & Swayne Legal Services Limited | Professional & scientific | 2005 |
| Gould & Swayne Limited | Professional & scientific | 2004 |
| Greenecoworld Ltd | Construction | 2016 |
| Ground Regeneration Ltd | Construction | 2019 |
| Guru Marketing Limited | Extraterritorial | 2009 |
| Hair at Park Road Limited | Other services | 2017 |
| Halula Properties Limited | Real estate | 2017 |
| Haycroft Developments Limited | Construction | 2013 |
| Heat 24 Ltd | Construction | 2023 |
| HED Fabrication Ltd | Manufacturing | 2022 |
| Hemmings Electrical Limited | Construction | 2000 |
| Heritage Contractors (SW) Limited | Construction | 2004 |
| HEY Adam Design Co Limited | Professional & scientific | 2025 |
| Higgly Piggly B Limited | Hospitality | 2025 |
| HJA Motorcycles Limited | Wholesale & retail | 2020 |
| HNO NUR Ltd | Hospitality | 2026 |
| Hotel Melody Ltd | Hospitality | 2024 |
| Hotel Melody Tents Ltd | Hospitality | 2024 |
| House of Hraiz Limited | Wholesale & retail | 2024 |
| Hype Softplay Limited | Arts & recreation | 2023 |
| Ibuild Carpentry & Construction Ltd | Manufacturing | 2022 |
| Ibuild Contracting Ltd | Manufacturing | 2024 |
| Icehelm Solutions Limited | Information & communication | 2018 |
| Icon 50 Consultancy Limited | Professional & scientific | 2023 |
| Imfi Ltd | Hospitality | 2025 |
| IN Vivo Limited | Extraterritorial | 2000 |
| Intribal Ltd | Wholesale & retail | 2023 |
| Ivybridge Properties Limited | Real estate | 2020 |
| Ivythorn Escapes Ltd | Hospitality | 2021 |