| C Cake Ltd | Manufacturing | 2025 |
| C E Electrical (South West) Limited | Construction | 2016 |
| C E Green Property Ltd | Real estate | 2025 |
| C F Plumbing & Heating Limited | Construction | 2003 |
| C F Training Ltd | Information & communication | 2005 |
| C G & D Heal Limited | Agriculture & fishing | 1988 |
| C G O’Sullivan Limited | Real estate | 2020 |
| C H Cham Limited | Hospitality | 2006 |
| C H Gale Limited | Construction | 2025 |
| C H L (Properties) Limited | Professional & scientific | 2001 |
| C H Services Bristol Ltd | Construction | 2025 |
| C Holmes Property Investment Ltd | Real estate | 2024 |
| C Hudson Ltd | Wholesale & retail | 2021 |
| C Hughes Solutions Limited | Information & communication | 2025 |
| C J Autos Bristol Limited | Wholesale & retail | 2016 |
| C J East Bristol Ltd | Real estate | 2016 |
| C J Freeman and Co Limited | Wholesale & retail | 1981 |
| C J Harper Ltd | Transport & logistics | 2026 |
| C J Inns & Co Limited | Hospitality | 2022 |
| C J North Somerset Limited | Real estate | 2026 |
| C JAY Limited | Health & social care | 2019 |
| C K Bookkeeping Limited | Professional & scientific | 2002 |
| C L C Cleaning Ltd | Administrative & support | 2024 |
| C L Webb Ltd | Professional & scientific | 2010 |
| C M T Catering Ltd | Hospitality | 2026 |
| C M White Bricklaying Ltd | Construction | 2021 |
| C M Workforce Limited | Transport & logistics | 2011 |
| C Mcalinden Properties Ltd | Real estate | 2026 |
| C Midgley Services Limited | Construction | 2014 |
| C N Drywall Finishers Ltd | Construction | 2019 |
| C P C Petrest Limited | Extraterritorial | 2015 |
| C P Rowe Holdings Ltd | Extraterritorial | 2019 |
| C P Watney Ltd | Information & communication | 2025 |
| C Packer Estates Ltd | Real estate | 2023 |
| C Parker & SON Electrical Contractors Limited | Construction | 2025 |
| C R Baines Plumbing and Heating Limited | Construction | 2014 |
| C R Decorators Ltd | Construction | 2023 |
| C R Heating & Renewables Ltd | Construction | 2025 |
| C R J Daultrey Ltd | Health & social care | 2019 |
| C R Windows Ltd | Extraterritorial | 2025 |
| C Rudman (Inc. Power Agencies) Ltd | Wholesale & retail | 2018 |
| C S Floorcraft Limited | Construction | 2007 |
| C S Services (SW) Ltd | Construction | 2022 |
| C Sheppard Limited | Construction | 2015 |
| C Squared Coaching Limited | Administrative & support | 2025 |
| C T G Developments Limited | Construction | 2022 |
| C Turner Plastering Ltd | Construction | 2005 |
| C V Ross & Co Trustees Limited | Professional & scientific | 2006 |
| C W Duke Holdings Limited | Financial services | 2020 |
| C W Electrical Solutions Limited | Construction | 2015 |
| C W Jones Electrical Services Ltd | Construction | 2014 |
| C W Oakley & Sons Limited | Real estate | 2003 |
| C Williams Limited | Professional & scientific | 2010 |
| C&A Plant Hire (SW) Limited | Administrative & support | 2024 |
| C&C Collective Limited | Administrative & support | 2025 |
| C&C Gallagher Limited | Health & social care | 2024 |
| C&C IP UK Limited | Professional & scientific | 2019 |
| C&C Management Services (UK) Limited | Professional & scientific | 2008 |
| C&D Food Service Ltd | Wholesale & retail | 2025 |
| C&D Rock Properties Ltd | Real estate | 2025 |
| C&D ST255869 Ltd | Real estate | 2021 |
| C&G Construction Group Ltd | Construction | 2026 |
| C&H Fenix Limited | Transport & logistics | 2026 |
| C&L Cave Ltd | Real estate | 2022 |
| C&L Communications Ltd | Information & communication | 2021 |
| C&L TM Group Ltd | Construction | 2026 |
| C&L Traffic Management Ltd | Construction | 2019 |
| C&M Group Logistics Ltd | Transport & logistics | 2022 |
| C&P Developments (Wedmore) Limited | Construction | 2017 |
| C&R Domestic Ltd | Construction | 2025 |
| C&S Car Haus Limited | Wholesale & retail | 2018 |
| C&S Care Haus Ltd | Health & social care | 2019 |
| C&S Group Holdings Limited | Financial services | 2025 |
| C&S Holiday Lets and More Ltd | Real estate | 2021 |
| C&S Squared Limited | Other services | 2015 |
| C&Seby Transport Ltd | Transport & logistics | 2022 |
| C&Tt Ltd | Transport & logistics | 2019 |
| C-Healthy Living Ltd | Health & social care | 2018 |
| C-Level Limited | Professional & scientific | 2000 |
| C-O-N-F-E-C-T-I-O-N-A-R-Y Island Ltd | Extraterritorial | 2022 |
| C. & T. Licata & SON Limited | Wholesale & retail | 2003 |
| C. J. Computing (Systems) Limited | Wholesale & retail | 1994 |
| C. Quartermain Ltd | Public administration | 2020 |
| C. the C. Limited | Households | 2004 |
| C.A. Powell Farms Limited | Agriculture & fishing | 1975 |
| C.A.J Tech Ltd | Information & communication | 2022 |
| C.A.P Security Limited | Construction | 2005 |
| C.A.T. Electrical, Fire and Security Limited | Construction | 2003 |
| C.B.O Ventures Limited | Other services | 2025 |
| C.D. (Heyford) Properties Limited | Construction | 1983 |
| C.G.C. Communications Limited | Information & communication | 2005 |
| C.H.Victor KAM Ltd | Wholesale & retail | 2022 |
| C.I. Stairs & Carpentry Ltd | Manufacturing | 2021 |
| C.I.W Electrical Services Ltd | Construction | 2020 |
| C.J.Chapman Limited | Professional & scientific | 1923 |
| C.J.L. Construction Limited | Construction | 1983 |
| C.J.R.Y Consultancy Ltd | Professional & scientific | 2025 |
| C.K. Investments (Weston) Limited | Real estate | 2001 |
| C.K.B. Plumbing & Heating Limited | Construction | 2011 |
| C.L. Apps Ltd | Information & communication | 2019 |