| Bonner Cars Limited | Manufacturing | 2023 |
| Bonner Power Limited | Real estate | 2020 |
| Boogie Pumps Chichester Ltd | Arts & recreation | 2024 |
| Borough of Havant Sport and Leisure Trading Limited | Hospitality | 1997 |
| Borough of Havant Sport and Leisure Trust | Arts & recreation | 1997 |
| Boss Systemworks Ltd | Information & communication | 2026 |
| Bowler Design Ltd | Information & communication | 2017 |
| Box 49 Ltd | Arts & recreation | 2023 |
| Boxes and Burgers Ltd | Wholesale & retail | 2025 |
| Bradwell House Residents Limited | Real estate | 2019 |
| Brecklands IT Project Services Limited | Construction | 2013 |
| Brewster Scott Limited | Real estate | 2004 |
| Bridgwater Bros.Holdings Limited | Real estate | 1966 |
| Bright Beginnings Nursery Limited | Education | 2009 |
| Bright Property Investments Limited | Real estate | 2009 |
| Bring IT on Home Limited | Transport & logistics | 2025 |
| Brnt Live Long Ltd | Agriculture & fishing | 2019 |
| Brockhampton Holdings Limited | Professional & scientific | 1990 |
| Brockhampton Property Investments Limited | Real estate | 1993 |
| Brockhampton Solutions Limited | Energy | 2021 |
| Brookes Shipwrights Limited | Manufacturing | 2022 |
| BTY Academy Ltd | Other services | 2019 |
| Bubbles Window Cleaning Services Ltd | Administrative & support | 2012 |
| Buckingham Plumbing Limited | Construction | 2007 |
| Build With Pride Ltd | Construction | 2017 |
| Buildsure Building Experts Ltd | Manufacturing | 2020 |
| Burnett Composites Ltd | Manufacturing | 2024 |
| Butser Roofing Limited | Construction | 2015 |
| Buttons Little Angels Day Nursery Ltd | Health & social care | 2025 |
| Buuckles Ltd | Manufacturing | 2018 |
| BW Roofing & Cladding Limited | Construction | 2023 |
| Bytegrity Ltd | Information & communication | 2020 |
| C & G Rentals (Southern) Limited | Real estate | 2026 |
| C & S MOT Testing Limited | Wholesale & retail | 2008 |
| C.Jcleaning Ltd | Administrative & support | 2017 |
| Caba Mondialul Ltd | Health & social care | 2019 |
| Calder Contemporary Art Ltd | Professional & scientific | 2026 |
| Camperfixer Ltd | Manufacturing | 2025 |
| Capital Composites Limited | Manufacturing | 2022 |
| Caring TOGETHER90 Ltd | Health & social care | 2019 |
| Carter Recovery Ltd | Transport & logistics | 2022 |
| Carter Vehicle Sales Limited | Wholesale & retail | 2026 |
| Castle Pre-School Limited | Education | 2002 |
| Cat Globe Limited | Health & social care | 2025 |
| CCN Communications Ltd | Construction | 2008 |
| Cejo Investment Ltd | Real estate | 2025 |
| Celestial Technical Limited | Information & communication | 2015 |
| Central Energy South Limited | Construction | 2015 |
| CER Property Limited | Real estate | 2020 |
| CER Property Management Ltd | Households | 2023 |
| Cewlik LP Limited | Hospitality | 2023 |
| Challenge Building Services Limited | Construction | 2012 |
| Changlen Limited | | 1973 |
| Chaos Group Ltd | Financial services | 2026 |
| Chaos Support Ltd | Health & social care | 2012 |
| Chaos Supported Living Ltd | Health & social care | 2026 |
| Chapel Medi-Spa Limited | Other services | 2013 |
| Chapman's Property Investments Ltd | Real estate | 2020 |
| Charlotte's Rentals Ltd | Real estate | 2016 |
| Charnwood House Management (IOW) Limited | Real estate | 2006 |
| Chauffeur Service Chichester Ltd | Transport & logistics | 2015 |
| Chawal Ltd | Hospitality | 2024 |
| Chcr Enterprises Limited | Health & social care | 2012 |
| Chichester Car & Van Hire Ltd | Administrative & support | 1992 |
| Chichester Food Co Ltd | Hospitality | 2018 |
| Chimes Fabrications Limited | Manufacturing | 1992 |
| Chinese Food Centre (Havant) Limited | Hospitality | 2024 |
| Chloebryce Company Limited | Health & social care | 2015 |
| CHM General Ltd | Hospitality | 2018 |
| Chow Street Foods Limited | Administrative & support | 2008 |
| Chris DOE Limited | Other services | 2015 |
| Chris DOE Photography Ltd | Professional & scientific | 2025 |
| Christopher Barry Hertzog Ltd | Extraterritorial | 2025 |
| Cindarella Ltd | Administrative & support | 2018 |
| Ciobanu Alexandru Transport Limited | Transport & logistics | 2017 |
| Ciret Limited | Wholesale & retail | 1960 |
| City Textiles UK Ltd. | | 1992 |
| CJB Cleaning Solutions Limited | Administrative & support | 2021 |
| Ckdirectfba Ltd | Wholesale & retail | 2025 |
| CLA Luxury Voyage Ltd | Transport & logistics | 2025 |
| Clarity Clearance Services Ltd | Transport & logistics | 2026 |
| Classic Executive Wheels Limited | Transport & logistics | 2025 |
| Cldp Ltd | Information & communication | 2015 |
| Clear Accounting Solutions Ltd | Professional & scientific | 2024 |
| Clements Trading Group Ltd | Wholesale & retail | 2025 |
| Cleveland Eton Ltd | Administrative & support | 2022 |
| Clive Byng & SON Sprinklers Ltd | Construction | 2023 |
| Clockhouse 2017 Limited | Construction | 2017 |
| Cmeas Limited | Professional & scientific | 2017 |
| Cnfolio Limited | Information & communication | 2019 |
| Coast Interior Flooring Ltd | Construction | 2018 |
| Coastal Custom Threads Ltd | Wholesale & retail | 2024 |
| Coastal Garden Rooms Ltd | Construction | 2023 |
| Coastal Rowing Academy CIC | Arts & recreation | 2021 |
| Cobden House Management Company Limited | Households | 2016 |
| Cobrixx Limited | Information & communication | 2026 |
| Coconut Island Ltd | Hospitality | 2024 |
| Cole-Payn Ventures Ltd | Hospitality | 2025 |
| Colin R Jones Ltd | Construction | 2026 |
| Collins Services Ltd | Households | 2023 |