| C.L. Electrical Controls Limited | Manufacturing | 2004 |
| C.M. Jenkins (Holdings) Limited | Professional & scientific | 1983 |
| C.O Floors Ltd | Construction | 2025 |
| C.P.T. Motorcycle Dealers Bristol Ltd | Wholesale & retail | 2026 |
| C.R.I.S Consulting Ltd | Professional & scientific | 2020 |
| C.S General Building Ltd | Construction | 2024 |
| C.S.V.S Consulting Ltd | Professional & scientific | 2021 |
| C.T. Services Limited | Professional & scientific | 2002 |
| C.T.N Medical Limited | Health & social care | 2024 |
| C.V. Ross & Co Limited | Professional & scientific | 2005 |
| C.W. International Limited | Other services | 1986 |
| C.W. Jones Holdings Limited | Financial services | 2020 |
| C.W.E. Services Limited | Construction | 2000 |
| C.W.E. Training Ltd. | Professional & scientific | 2006 |
| C.W.Jones Carpet & Flooring Limited | Wholesale & retail | 2009 |
| C1 Surfacing Limited | Administrative & support | 2026 |
| C2J Systems Ltd | Professional & scientific | 2012 |
| C3 Media Limited | Information & communication | 2009 |
| C3.AI UK Ltd. | Administrative & support | 2020 |
| C3TALENT Ltd | Professional & scientific | 2025 |
| C9 Beauty Salon Ltd | Other services | 2013 |
| C9 Systems Limited | Information & communication | 2026 |
| CA Card Hub & Exchange Ltd | Wholesale & retail | 2022 |
| CA Developments Limited | Real estate | 2003 |
| CA Groundcare & Construction Ltd | Construction | 2019 |
| CA Large Ltd | Professional & scientific | 2022 |
| CA Tech Limited | Manufacturing | 2025 |
| CA Transport Ltd | Transport & logistics | 2023 |
| CA1 Barbers Limited | Other services | 2018 |
| Caafi Health Care Limited | Health & social care | 2021 |
| Caafi Health CIC | Education | 2021 |
| Caasi Limited | Information & communication | 1997 |
| CAB BSE Ltd. | Construction | 2014 |
| CAB IT Services Limited | Information & communication | 2007 |
| CAB2GOBRISTOL Ltd | Transport & logistics | 2026 |
| Caballero Housing Accommodations Ltd | Real estate | 2022 |
| Caballo Blanco Limited | Hospitality | 2024 |
| Cabbase Ltd | Transport & logistics | 2019 |
| Cabbot Clean UP Ltd | Water & waste | 2025 |
| Cabell Limited | Information & communication | 1998 |
| Cabello Millar Legal Ltd | Professional & scientific | 2020 |
| Cabinetpro Limited | Manufacturing | 2007 |
| Cable IT (SW) Limited | Construction | 2013 |
| Cableboss Limited | Manufacturing | 2022 |
| Cablecove Ltd | Wholesale & retail | 2024 |
| Cables & Cameras CIC | Education | 2021 |
| Cabo Empire Ltd | Wholesale & retail | 2024 |
| Cabo Tech Solution AI Ltd | Information & communication | 2025 |
| Cabot (Thornbury) Management Company Limited | Hospitality | 1984 |
| Cabot Asset Finance Limited | Financial services | 1997 |
| Cabot Barton Management Company Limited | Households | 1981 |
| Cabot Building Services Ltd. | Wholesale & retail | 2003 |
| Cabot Carpets (Bristol) Limited | Wholesale & retail | 2018 |
| Cabot Carpets (Fitting) Limited | Construction | 2013 |
| Cabot Carpets (Flooring) Ltd | Construction | 2024 |
| Cabot Carpets (South West) Ltd | Wholesale & retail | 2024 |
| Cabot Clinic Ltd | Health & social care | 2023 |
| Cabot Communications Limited | Information & communication | 1993 |
| Cabot Cruising Club | Education | 2017 |
| Cabot Fire Ltd | Public administration | 2025 |
| Cabot Flooring Limited | Construction | 2025 |
| Cabot Groundworks Limited | Construction | 2014 |
| Cabot Homecare Ltd | Public administration | 2025 |
| Cabot Homes Limited | Construction | 2018 |
| Cabot Industrial Development Company Limited | Real estate | 1959 |
| Cabot Industrial Doors (SW) Limited | Construction | 2014 |
| Cabot Landscapes Ltd | Administrative & support | 2011 |
| Cabot Learning Federation | Education | 2007 |
| Cabot Mews Limited | Real estate | 2011 |
| Cabot Mews Management Co Limited | Households | 2023 |
| Cabot Motors Limited | Wholesale & retail | 2007 |
| Cabot Park Estates Ltd | Real estate | 2014 |
| Cabot Park Management Limited | Extraterritorial | 1998 |
| Cabot Park Property Limited | Real estate | 2023 |
| Cabot Park Solar Ltd | Real estate | 2015 |
| Cabot Portfolio Nominees Limited | Professional & scientific | 1998 |
| Cabot Properties Limited | Real estate | 1998 |
| Cabot Property Ltd | Construction | 2022 |
| Cabot Property Management Limited | Households | 2025 |
| Cabot Property Services Limited | Construction | 2022 |
| Cabot Rise Limited | Construction | 2017 |
| Cabot Thermals Limited | Construction | 1974 |
| Cabot Trustees Limited | Financial services | 1996 |
| Cabot Tyre Service Limited | Wholesale & retail | 1962 |
| Cabot Visions Limited | Other services | 2015 |
| Cabra Stores Ltd | Wholesale & retail | 2021 |
| Cabral Zmuda Property Limited | Real estate | 2025 |
| Cachopa Studios Limited | Arts & recreation | 2025 |
| Cacto Drinks Company Ltd | Wholesale & retail | 2020 |
| Cactus Data Ltd | Manufacturing | 2010 |
| Cactus Property Group Limited | Real estate | 2025 |
| Cactus UK Holding Ltd | Financial services | 2025 |
| CAD Cammish Ltd | Financial services | 2011 |
| CAD CUT Limited | Manufacturing | 1999 |
| CAD Snap Ltd | Professional & scientific | 2016 |
| CAD4U Limited | Construction | 2017 |
| Cadamon Limited | Hospitality | 2018 |
| Cadbury Heath Store Ltd | Wholesale & retail | 2024 |
| Cadbury Water Co. Limited(The) | Households | 1938 |
| Cadco Design Limited | Professional & scientific | 2019 |