| Commlit.Online Ltd | Education | 2020 |
| Commsultancy Limited | Information & communication | 2008 |
| Compassionate Kernow CIC | Health & social care | 2025 |
| Compton Park Management Company Limited | Professional & scientific | 1989 |
| Conscious Cattle Ltd | Professional & scientific | 2023 |
| Consilium Defence Limited | Administrative & support | 2025 |
| Cook Stars MID Hants Limited | Education | 2020 |
| Cooper Entertainment Ltd | Professional & scientific | 2014 |
| Coopers Yard (Hampshire) Limited | Real estate | 2015 |
| Corn Property Limited | Real estate | 2020 |
| Costshield Ltd | Information & communication | 2026 |
| Cottage Creations Limited | Construction | 2002 |
| Country Clipper Dog Grooming Limited | Professional & scientific | 2024 |
| County Marquees (Southern) Limited | Administrative & support | 2001 |
| Cozy Bunny Limited | Extraterritorial | 2020 |
| Crewe Consulting Ltd | Professional & scientific | 2020 |
| Crewin Services Limited | Other services | 2018 |
| CRM Sporting (Breach Farm) Ltd | Agriculture & fishing | 2017 |
| Cross Axle Services Limited | Wholesale & retail | 2004 |
| Cross Trees Livery Ltd | Professional & scientific | 2016 |
| Crosspoint Solutions Limited | Information & communication | 2011 |
| Ctrl-Shift Exchange Limited | Education | 2025 |
| Cubecircle Ltd | Information & communication | 2014 |
| Cute Vintage Limited | Extraterritorial | 2020 |
| Cycle Worldwide Ltd | Extraterritorial | 2020 |
| D G 210 Limited | Financial services | 2008 |
| D G 211 Limited | Financial services | 2008 |
| D S Mitchell Limited | Real estate | 2021 |
| Dadi LLP | | 2013 |
| Datafree Technologies Limited | Information & communication | 2020 |
| David Abbott & Partners Limited | Professional & scientific | 1988 |
| David Iain Africa Limited | Professional & scientific | 2025 |
| DBA Distribution Limited | Wholesale & retail | 2025 |
| DE Angels Solutions Limited | Information & communication | 2022 |
| DE Selincourt Wines Limited | Extraterritorial | 2010 |
| Dean Plumbing & Heating Limited | Construction | 2010 |
| Declutter DUO Limited | Administrative & support | 2021 |
| Defined Contribution Investment Forum | Other services | 2015 |
| Digital Forma Ventures Ltd | Administrative & support | 2023 |
| Dimond Dressage Livery and Training LLP | | 2023 |
| Dipity Ventures Ltd | Arts & recreation | 2024 |
| Dive Worldwide Limited | Extraterritorial | 2010 |
| DJH (Hampshire) Ltd | Transport & logistics | 2025 |
| DNA Component Plus Ltd | Wholesale & retail | 2017 |
| Donitrol Limited | Manufacturing | 2007 |
| Donna Creative Limited | Professional & scientific | 2025 |
| Double TAP Press Limited | Information & communication | 2019 |
| DR M Fabian Ltd | Health & social care | 2022 |
| Dragon Boat Events Limited | Other services | 2003 |
| Dugong Ltd | Professional & scientific | 2024 |
| DVP Media Ltd | Information & communication | 2018 |
| E & a Durani Ltd. | Households | 2019 |
| E T Communications UK Limited | Information & communication | 2004 |
| Earlsgate Construction Limited | Construction | 2026 |
| East Coast Hydroponics Limited | Wholesale & retail | 2018 |
| Eclipse Electrical Services Ltd | Construction | 2016 |
| Eddolls Carpets Limited | Wholesale & retail | 2009 |
| Edmund John Brogden Sutcliffe Limited | Extraterritorial | 2023 |
| Edmund Sutcliffe Ltd | Extraterritorial | 2024 |
| Edward White Consulting Limited | Information & communication | 2018 |
| EG Sports Horses LLP | | 2025 |
| Elahub Ltd | Education | 2019 |
| Eliza C Walker Barbers Ltd | Other services | 2024 |
| Elle Homecare Limited | Administrative & support | 2021 |
| Elsi Design Ltd | Professional & scientific | 2023 |
| Embed AI Ltd | Information & communication | 2024 |
| Emerson Rush UK Ltd | Professional & scientific | 2016 |
| Emeya Recruitment Limited | Administrative & support | 2019 |
| Emika Ltd | Professional & scientific | 2023 |
| Eminent Care Limited | Health & social care | 2001 |
| Emshellard Limited | Real estate | 2024 |
| Enterprise Risk International Ltd | Administrative & support | 2024 |
| Erinacus Consulting Limited | Professional & scientific | 2024 |
| Essex Vale Limited | Real estate | 2023 |
| Euphonet Ltd | Manufacturing | 2023 |
| Evans of Alresford Ltd | Wholesale & retail | 2024 |
| Evelyn Mews Residents Association Limited | Households | 1986 |
| Eves Property Holdings Ltd | Real estate | 2021 |
| EVO Effects Limited | Information & communication | 2004 |
| Exchange Estates (Liverpool) Limited(The) | Real estate | 1925 |
| Exponent Contracts Ltd | Information & communication | 2001 |
| Fairacre Support Limited | Manufacturing | 2020 |
| Fairoak Grange Limited | Professional & scientific | 1997 |
| Families Worldwide Limited | Administrative & support | 2010 |
| Farmageddon Limited | Extraterritorial | 2023 |
| Farmergeddon Limited | Extraterritorial | 2023 |
| Farringdon Instruments Limited | Manufacturing | 1995 |
| FEI Consulting Limited | Information & communication | 2025 |
| Festival of Wildlife Ltd | Extraterritorial | 2012 |
| Fieldgate Consulting Limited | Construction | 2014 |
| Film Creatives Productions Ltd | Information & communication | 2013 |
| Films in Bloom Ltd | Information & communication | 2011 |
| Finchatton Hampshire Limited | Construction | 2023 |
| Finn Cardigan Bruce Productions Group Ltd | Professional & scientific | 2024 |
| First Carlton Estates Limited | Real estate | 2001 |
| First Carlton Limited | Real estate | 1998 |
| First Option Limited | Information & communication | 1989 |
| Flint Construction Limited | Construction | 1994 |
| Florence Estates Ltd | Real estate | 2017 |
| Food Finders (UK) Limited | Wholesale & retail | 2014 |