| BS Crump Ltd | Health & social care | 2024 |
| BS Scaffolding (South West) Ltd | Construction | 2018 |
| BS15DOORS & Windows Limited | Construction | 2014 |
| BS23 Ltd | Information & communication | 2024 |
| BTH Renewables Ltd | Construction | 2025 |
| Btmotcentre Ltd | Wholesale & retail | 2012 |
| Bubo IT Services Ltd | Information & communication | 2024 |
| Bucu Nine Limited | Hospitality | 2019 |
| Buddy Trans Limited | Wholesale & retail | 2018 |
| Buena Fortuna Limited | Hospitality | 2019 |
| Bugler Development SW Ltd | Construction | 2017 |
| Build Social Media Ltd | Professional & scientific | 2020 |
| Building Compliance Ltd | Professional & scientific | 2015 |
| Bump Properties Ltd | Real estate | 2020 |
| Burasari Living Ltd | Real estate | 2019 |
| Buriu Transport Ltd | Transport & logistics | 2016 |
| Burley Inclusive Bristol Ltd | Education | 2023 |
| Burley Inclusive Ltd | Education | 2013 |
| Burley Infrastructure Ltd | Construction | 2023 |
| Burnell Tovey Limited | Other services | 1956 |
| Burrowes & Sons Plumbing & Heating Solutions Ltd | Construction | 2025 |
| Burton House (Weston-Super-Mare) Residents Association Limited | Households | 1977 |
| Bushpig Equipment Ltd | Wholesale & retail | 2023 |
| Business Marketing Spaces Ltd | Professional & scientific | 2020 |
| Business Reign Ltd | Professional & scientific | 2023 |
| Busy Buddies Daycare Ltd | Health & social care | 2019 |
| Butlers Commercial Cleaning Ltd | Administrative & support | 2023 |
| Buyorrentscaffolding Ltd | Wholesale & retail | 2019 |
| Buzz Financial Ltd | Financial services | 2013 |
| Buzzelectricalservices.Com Ltd | Construction | 2014 |
| Bygone News Limited | Wholesale & retail | 1988 |
| Bytetorque Limited | Information & communication | 2025 |
| BZ Core Engineering Ltd | Construction | 2026 |
| C & a Innovation Limited | Health & social care | 2025 |
| C & C Mobile Trailer Services Ltd | Wholesale & retail | 2013 |
| C & J Management Consultants Ltd | Professional & scientific | 2019 |
| C a Newbury Enterprise Ltd | Health & social care | 2019 |
| C B P (South West) Limited | Households | 1996 |
| C J Ductwork Limited | Construction | 2024 |
| C K Enterprises (Weston) Limited | Hospitality | 2000 |
| C M Screeding Ltd | Construction | 2014 |
| C R Long Ltd | Construction | 2021 |
| C. & J. Geeve Limited | Households | 1943 |
| C.A.M. Logistics Ltd | Professional & scientific | 2011 |
| C22 Bristol Ltd | Hospitality | 2016 |
| Cactus Films Ltd | Arts & recreation | 2019 |
| Cadbury Cars Ltd | Transport & logistics | 2013 |
| Cadogan House Associates Limited | Real estate | 2001 |
| Cadogan House Investment Properties Limited | Real estate | 1999 |
| Cadwell BIM Limited | Information & communication | 2022 |
| Cafe Clay Ltd | Hospitality | 2025 |
| Cafe Gold WSM Ltd | Hospitality | 2022 |
| CAG92 Ltd | Health & social care | 2018 |
| Caged MMA UK Ltd | Arts & recreation | 2026 |
| Cairns Associates Limited | Manufacturing | 2015 |
| CAL Services UK Limited | Manufacturing | 2004 |
| Calichy Ltd | Wholesale & retail | 2025 |
| Callum& Phones Ltd | Wholesale & retail | 2026 |
| Cally & Grace Ltd | Wholesale & retail | 2022 |
| Calmame Ltd | Education | 2019 |
| Calvion Ltd | Manufacturing | 2026 |
| Camaction Avonpump Spares Limited | Wholesale & retail | 2005 |
| Cambria Mansions (W.S.M.) Management Limited | Households | 1990 |
| Camden Mews Management Company Limited | Real estate | 2018 |
| Camel Consulting Ltd | Information & communication | 2015 |
| Cane Property Developments (U.K.) Limited | Real estate | 2006 |
| Canes Laundry Machines (UK) Limited | Wholesale & retail | 2026 |
| Canhome Limited | Households | 1981 |
| Canine Claims Limited | Professional & scientific | 2016 |
| Canlone Limited | Households | 1976 |
| Canter Education LLP | | 2012 |
| Canterbury Educational Services Limited | Education | 2013 |
| Capit ALL Accounting Limited | Professional & scientific | 2010 |
| Capital Contracts (SW) Ltd | Extraterritorial | 2016 |
| Capital Health and Safety Training Ltd | Administrative & support | 2017 |
| Capital Property 2023 Limited | Real estate | 2023 |
| Capstone Construction Limited | Construction | 2018 |
| Captains House RTM Company Ltd | Households | 2025 |
| Captrad SW Ltd | Households | 2019 |
| Capu Group Ltd | Financial services | 2023 |
| Capu Search Ltd | Administrative & support | 2021 |
| Carantoc Art Ltd | Manufacturing | 2022 |
| Carbon Consultants Limited | Professional & scientific | 2023 |
| Carbon Link Centre Limited | Administrative & support | 2015 |
| Cardwell Health & Safety Limited | Professional & scientific | 2018 |
| Care Group (SW) Limited | Health & social care | 2025 |
| Care O Care Ltd | Health & social care | 2023 |
| Carefree Holiday Park Limited | Hospitality | 2010 |
| Carefree Luxury Holiday Homes Limited | Hospitality | 2010 |
| Carero Ltd | Health & social care | 2019 |
| Carlo Cars Ltd | Transport & logistics | 2023 |
| Caromba Jewellers Ltd | Manufacturing | 2019 |
| Carpathian Trade Ltd | Manufacturing | 2025 |
| Carpentry by Clive Ltd | Manufacturing | 2023 |
| Carpet Care WSM Limited | Administrative & support | 2026 |
| Carr & Co. Financial Services Limited | Professional & scientific | 2020 |
| Carry Pro Ltd | Construction | 2016 |
| Carter Property Developments Ltd | Construction | 2017 |
| Carter Utilities Ltd | Administrative & support | 2017 |
| Casado Design Limited | Professional & scientific | 2012 |