| Commercial Contract Management Service (Ccms) Ltd | Professional & scientific | 2024 |
| Commercial Cooling Specialists Limited | Construction | 2003 |
| Commercial Crate Hire Limited | Administrative & support | 2011 |
| Commercial Data Models Limited | Information & communication | 2017 |
| Commercial Foods Limited | Manufacturing | 2015 |
| Commercial Impact Solutions Ltd | Professional & scientific | 2025 |
| Commercial Metal Recycling Ltd | Wholesale & retail | 2020 |
| Commercial Property Advisors Ltd | Administrative & support | 2016 |
| Commercial Resource Management Ltd | Professional & scientific | 2021 |
| Commercial Trading Pallets Limited | Manufacturing | 2009 |
| Commercial Tyre Services (Bristol) Limited | Wholesale & retail | 2018 |
| Commercial Waste Management Ltd | Water & waste | 2025 |
| Commercial Waste Solutions Ltd | Water & waste | 2025 |
| Common Ground Advisors Ltd | Construction | 2025 |
| Common Ground LAB Ltd | Information & communication | 2018 |
| Common Productions Ltd | Arts & recreation | 2012 |
| Commonhead Management Company (Swindon) Limited | Households | 2017 |
| Commons at Cannon Street Ltd | Hospitality | 2023 |
| Commons at Ltd | Financial services | 2022 |
| Commons at Old Street Works Ltd | Hospitality | 2022 |
| Commons Law Community Interest Company | Professional & scientific | 2016 |
| Commonwealth Lawyers Association Limited | Other services | 2009 |
| Commotion Agency Ltd | Information & communication | 2020 |
| Commstar Ltd | Professional & scientific | 2006 |
| Communication CAN Ltd | Extraterritorial | 2020 |
| Communication Space Ltd | Administrative & support | 2018 |
| Community Care Package CIC | Hospitality | 2020 |
| Community Crematoria Limited | Other services | 2011 |
| Community Energy Catalyst Limited | Administrative & support | 2024 |
| Community Health & Medicine Ltd | Financial services | 2015 |
| Community Health Facilities (Holdings) Limited | Real estate | 1998 |
| Community Health Facilities (Oxford) Limited | Real estate | 1997 |
| Community in Partnership Knowle West | Other services | 1997 |
| Community Initiatives South West Limited | Hospitality | 2007 |
| Community LED Property Limited | Real estate | 2018 |
| Community Medical Services Bristol Limited | Health & social care | 2014 |
| Community Multi Care Enterprises Limited | Health & social care | 2015 |
| Community of Purpose C.I.C. | Education | 2016 |
| Community Parlour Ltd | Professional & scientific | 2024 |
| Community Power CIC | Professional & scientific | 2024 |
| Community Power Solutions Ltd | Professional & scientific | 2020 |
| Community Relations Ltd | Professional & scientific | 2023 |
| Community Transformation Bristol | Health & social care | 2025 |
| Community Yarn Ltd | Wholesale & retail | 2025 |
| Commy and Harry Services Limited | Hospitality | 2023 |
| Comodas Living Ltd | Real estate | 2023 |
| Comp-Bhp Ltd | Extraterritorial | 2025 |
| Compact Motion Limited | Transport & logistics | 2015 |
| Compair Reavell Limited | Professional & scientific | 1898 |
| Companion's Haven Ltd. | Other services | 1989 |
| Companionship Limited | Health & social care | 2022 |
| Companion’S Haven Holdings Limited | Other services | 2024 |
| Company Evolution Limited | Professional & scientific | 2009 |
| Company Partners Ltd | Professional & scientific | 2003 |
| Compare Contract Hire Limited | Information & communication | 2008 |
| Comparket Limited | Education | 2019 |
| Compass Alternative Provision Limited | Education | 2023 |
| Compass Coffee Ltd | Extraterritorial | 2024 |
| Compass Film Community Interest Company | Arts & recreation | 2007 |
| Compass House Management Company Limited | Real estate | 2007 |
| Compass J24 Group Ltd | Financial services | 2023 |
| Compass Mentis IT Ltd | Information & communication | 2016 |
| Compass Project 2012 CIC | Education | 2012 |
| Compass Psychological Services Ltd | Health & social care | 2010 |
| Compass Security Systems Limited | Construction | 1987 |
| Compass Travels and Support Services Ltd | Transport & logistics | 2022 |
| Compassionate Creative Community Ltd | Health & social care | 2023 |
| Compassionate Haven Limited | Hospitality | 2023 |
| Compelite Pro Ltd | Professional & scientific | 2025 |
| Competiown Ltd | Other services | 2024 |
| Compleo Sport Ltd | Information & communication | 2014 |
| Complete Building (South West) Ltd | Construction | 2003 |
| Complete Carpentry Contractors Ltd | Construction | 2004 |
| Complete Cleaning Bristol Ltd | Administrative & support | 2018 |
| Complete Climate Limited | Construction | 2024 |
| Complete Construction (SW) Ltd | Construction | 2020 |
| Complete Control Solutions Limited | Construction | 2024 |
| Complete Country Ltd | Households | 2025 |
| Complete Design & Construction Limited | Construction | 2004 |
| Complete Design & Construction Properties Limited | Real estate | 2017 |
| Complete Design Partnership Limited | Professional & scientific | 1999 |
| Complete Fire Protection Limited | Construction | 1990 |
| Complete Furniture Services Limited | Other services | 2015 |
| Complete GAS Heating Services Ltd | Construction | 2021 |
| Complete Health Clinic Limited | Health & social care | 2008 |
| Complete Holdings South West Ltd | Real estate | 2025 |
| Complete Installations (Bristol) Ltd | Construction | 2008 |
| Complete MAC Solutions Ltd | Other services | 2020 |
| Complete Managed Technologies Limited | Administrative & support | 2024 |
| Complete Scaffolding (South West) Ltd | Construction | 2015 |
| Complete Security UK (SW) Limited | Administrative & support | 2016 |
| Complete SQL Solutions Ltd | Information & communication | 2011 |
| Complete Supplies Ltd | Administrative & support | 2023 |
| Complete Telecom Solutions Limited | Information & communication | 2013 |
| Complete Traffic Control Limited | Extraterritorial | 2012 |
| Complete Weed Control (North Wessex) Limited | Administrative & support | 2000 |
| Complex Electrical Limited | Construction | 2023 |
| Compliance Brief Limited | Professional & scientific | 2023 |
| Compliant Consulting Ltd | Professional & scientific | 2024 |
| Compliant Golden Design Publishing Ltd | Information & communication | 2025 |