| Broadwater Limited | Professional & scientific | 2013 |
| Broadwater Technologies Limited | Professional & scientific | 2010 |
| Brown Honey Ltd | Wholesale & retail | 2023 |
| Bryan Maintenance Ltd | Construction | 2016 |
| Buckover Country Limited | Wholesale & retail | 2024 |
| Butterwood Ltd | Real estate | 2019 |
| Bykatevictoria Ltd | Other services | 2026 |
| Calicio Ltd | Professional & scientific | 2008 |
| Cambium Tree Services Ltd | Administrative & support | 2019 |
| Cambrian Group Limited | Extraterritorial | 2008 |
| Cambridge IQ Limited | Professional & scientific | 2014 |
| Campercam Ltd | Administrative & support | 2025 |
| Camping Cinema Ltd | Wholesale & retail | 2018 |
| Carbon Magics Ltd | Wholesale & retail | 2020 |
| Castle Farm Livery & Cross Country Ltd | Agriculture & fishing | 2025 |
| Cbsp Limited | Real estate | 2025 |
| CCT International Solutions Ltd | Transport & logistics | 2024 |
| Chappell Kidner Ltd | Real estate | 2023 |
| Charlcombe Partners Limited | Professional & scientific | 2021 |
| Charliejet Limited | Professional & scientific | 2020 |
| Cherrywick Limited | Agriculture & fishing | 2017 |
| Chopsticks (Charfield) Limited | Hospitality | 2017 |
| CJ Prop Hire and Events Ltd | Professional & scientific | 1993 |
| CJ Weddings Ltd | Administrative & support | 2020 |
| CJR Autobody Repair Limited | Administrative & support | 2018 |
| CJS Autos Limited | Wholesale & retail | 2008 |
| Clarence & Co Ltd. | Wholesale & retail | 2005 |
| Clean Structures (UK) Ltd | Manufacturing | 2006 |
| Clifton Associates Ltd | Professional & scientific | 2025 |
| Clover Homes and Developments Limited | Construction | 2020 |
| Clytha Square Management Company Limited | Real estate | 1996 |
| Codex Absolute Ltd | Professional & scientific | 2013 |
| Coherent Audio LLP | | 2017 |
| COMPLIANCE4YOU Limited | Professional & scientific | 2013 |
| Computon Limited | Information & communication | 2004 |
| Concept IP Services Ltd | Professional & scientific | 2018 |
| Cook Stars South Gloucestershire Ltd | Manufacturing | 2025 |
| Cool Apple Limited | Wholesale & retail | 2009 |
| Coolflame Ltd | Construction | 2015 |
| Cope Property Ltd | Real estate | 2020 |
| Cornerstone Financial Advisory Ltd | Professional & scientific | 2025 |
| Cotswold Cleaning Solutions Limited | Administrative & support | 2025 |
| Cotswold Commissioning Services Limited | Construction | 2014 |
| Cotswold Copy Collective Ltd | Professional & scientific | 2025 |
| Cotswold Edge Bees Ltd | Agriculture & fishing | 2022 |
| Cotswold Edge EAR Care Limited | Health & social care | 2024 |
| Cotswold Health Products Limited | Wholesale & retail | 1971 |
| Cotswold Heritage Group Ltd | Real estate | 2025 |
| Cotswold House Equity Partners Ltd | Professional & scientific | 2022 |
| Cotswold Plant & Engineering Limited | | 1983 |
| Craig Beyer Projects Ltd | Construction | 2026 |
| Crane Enterprise Limited | Real estate | 2022 |
| Creevy Developments Ltd | Construction | 2021 |
| Cromhall Media Ltd | Information & communication | 2012 |
| Cromhall Services Ltd | Administrative & support | 2024 |
| CRYSTAL10 Limited | Real estate | 2021 |
| Cutbill Consulting Ltd | Professional & scientific | 2020 |
| CW Paediatric Endocrinology Limited | Health & social care | 2024 |
| D J Priestley Ltd | Construction | 2016 |
| Dabmeb Consultancy Ltd | Professional & scientific | 2007 |
| Dakar Consulting Ltd | Construction | 2025 |
| Darn Good Thoughts Limited | Administrative & support | 2021 |
| David James & Partners Limited | Real estate | 2013 |
| DCJ Services Ltd | Households | 2021 |
| Deadmansgold Ltd | Information & communication | 2022 |
| Degylpin Limited | Real estate | 2026 |
| Deimos Construction Ltd | Construction | 2017 |
| Design Plus Purpose Limited | Professional & scientific | 2023 |
| Dibden Properties Ltd | Real estate | 2020 |
| District Plumbing Ltd | Construction | 2019 |
| DKC Property Ltd | Households | 2021 |
| Domunis Ltd | Information & communication | 2025 |
| DP Installations Ltd | Construction | 2024 |
| DPS Construction Services Ground Work and Civil Engineering Contractors Ltd | Construction | 2014 |
| Drumadoon Sports Limited | Arts & recreation | 2025 |
| Ducie Avenue Limited | Real estate | 2020 |
| Early Bird Events Ltd | Wholesale & retail | 2025 |
| Earthworm Construction Limited | Construction | 2019 |
| Easy Street Properties Limited | Real estate | 2003 |
| Ecentra Limited | Other services | 2025 |
| Eclipse Education Ltd | Information & communication | 2019 |
| Eclipse Hair & Nail Studio Ltd | Other services | 2014 |
| Ecolaseruk Ltd | Administrative & support | 2025 |
| Ecotipi Events Ltd | Administrative & support | 2020 |
| ED Sams Modelmaking Ltd | Information & communication | 2025 |
| Edbrook Properties Limited | Real estate | 2020 |
| Edge Construction Group (Holdings) Ltd | Extraterritorial | 2026 |
| Edge Construction Group (Maintenance) Ltd | Extraterritorial | 2026 |
| Edge Construction Group (Services) Ltd | Professional & scientific | 2026 |
| Edge Contracting Group Ltd | Agriculture & fishing | 2026 |
| Edge Estates Group Ltd | Extraterritorial | 2023 |
| Edge Heating and Plumbing Ltd | Construction | 2019 |
| Edward Baker Performance Ltd | Real estate | 2021 |
| Eight Penny Ltd | Professional & scientific | 2025 |
| Eighteen 18 Ltd | Other services | 2022 |
| EJB Cleaning Ltd | Administrative & support | 2024 |
| EJW Racing Ltd | Arts & recreation | 2024 |
| Electrical Assessment Service Ltd | Construction | 2024 |
| Elehan Consulting Ltd | Professional & scientific | 2023 |
| Elite Trailers Ltd | Manufacturing | 2024 |