| Cloverleaf Housing Ltd | Real estate | 2021 |
| Cloverleaf Property Group Ltd | Real estate | 2018 |
| CLS Global Ltd | Hospitality | 2020 |
| CLS U.K. Ltd | Professional & scientific | 2022 |
| Clstco Limited | Wholesale & retail | 2026 |
| CLT International Limited | Education | 2007 |
| Club After Dark Ltd | Hospitality | 2025 |
| Club BME Limited | Health & social care | 2023 |
| Club Bounce Mania Ltd | Arts & recreation | 2022 |
| Club Qubana Limited | Arts & recreation | 2025 |
| Club YSE Limited | Health & social care | 2026 |
| Clubbie Ltd. | Information & communication | 2015 |
| Clubhouse Pizza Ltd | Hospitality | 2026 |
| Clubsport Exclusive Limited | Wholesale & retail | 2016 |
| Clubsport Prestige Cars Ltd | Wholesale & retail | 2025 |
| Clubsports Midlands Ltd | Manufacturing | 2019 |
| Cludean Group Ltd | Professional & scientific | 2020 |
| Cluster 9 Limited | Professional & scientific | 2019 |
| Clusterfun Productions Ltd | Arts & recreation | 2026 |
| Clutch GG Media Limited | Arts & recreation | 2021 |
| Clutch Junction Limited | Wholesale & retail | 2023 |
| Clutch Realty Group Ltd | Real estate | 2021 |
| Clutch Solutions Ltd | Wholesale & retail | 2021 |
| CLW Transfers Ltd | Transport & logistics | 2024 |
| CLX Construct Luxury Ltd | Construction | 2020 |
| Clydfan Network Solutions Limited | Information & communication | 2016 |
| Clynergi Group Ltd | Construction | 2023 |
| CM Asset Management Ltd | Financial services | 2026 |
| CM Auto Service Ltd | Other services | 2015 |
| CM Consultancy Services Ltd | Construction | 2024 |
| CM Drainage Ltd | Professional & scientific | 2025 |
| CM Event Services Limited | Information & communication | 2001 |
| CM Medical-Aesthetics Ltd | Health & social care | 2022 |
| CM Midlands Limited | Hospitality | 2024 |
| CM Nottingham Limited | Hospitality | 2023 |
| CM Pensions Limited | Financial services | 2013 |
| CM Prestige Group Ltd | Manufacturing | 2026 |
| CM Property Assets Ltd | Real estate | 2023 |
| CM Recruiting Limited | Administrative & support | 2020 |
| CM Secure Ltd | Construction | 2023 |
| CM Site Management Ltd | Construction | 2025 |
| CM Ventures Marketing Services Limited | Manufacturing | 2009 |
| CM146 Limited | Hospitality | 2025 |
| CMA Creative Solutions Limited | Manufacturing | 2015 |
| CMA Holdings Group Ltd | Real estate | 2025 |
| CMA Media Ltd | Professional & scientific | 2023 |
| CMA Moldform Group Limited | Extraterritorial | 2015 |
| CMA Moldform Limited | Manufacturing | 1999 |
| CMA Properties 01 Ltd | Real estate | 2024 |
| CMA Video Limited | Information & communication | 2016 |
| CMB Assessments Ltd | Professional & scientific | 2017 |
| CMB Building and Renovation Contracts Ltd | Administrative & support | 2016 |
| CMB Construction & Renovation Ltd | Construction | 2025 |
| CMC Bookkeeping Services Limited | Professional & scientific | 2017 |
| CMC Holdings 2016 Limited | Construction | 2016 |
| Cmchambers Ltd | Administrative & support | 2024 |
| CMD Marketing Consulting Ltd | Professional & scientific | 2024 |
| Cmdo Ltd | Real estate | 2022 |
| CMF Photography Limited | Extraterritorial | 2016 |
| CMG Redditch Ltd | Construction | 2016 |
| CMH Gastro Ltd. | Health & social care | 2012 |
| CMH Payroll Services Limited | Administrative & support | 2019 |
| CMH786 Ltd | Professional & scientific | 2020 |
| CMI Travel Ltd | Transport & logistics | 2025 |
| Cmichaels Healthcare Ltd | Health & social care | 2016 |
| CMJ Plant Hire Limited | Construction | 2021 |
| CMK Consultancy Limited | Professional & scientific | 2025 |
| CMK INT Ltd | Wholesale & retail | 2024 |
| CML Accountancy Services Ltd | Professional & scientific | 2014 |
| CML Projects Limited | Construction | 2019 |
| CMM Consulting Ltd | Professional & scientific | 2022 |
| CMM247 Limited | Professional & scientific | 2012 |
| CMO Group Limited | Financial services | 2021 |
| Cmotion Films Limited | Professional & scientific | 2025 |
| CMP Lichfield Limited | Financial services | 2024 |
| CMQ Enterprise Ltd | Wholesale & retail | 2017 |
| CMR Agri Limited | Administrative & support | 2020 |
| CMR Grab and Digger Hire Ltd | Construction | 2020 |
| CMS Birmingham Ltd | Manufacturing | 2026 |
| CMS Car Sales Ltd | Wholesale & retail | 2025 |
| CMS Construction Inc. Limited | Construction | 2018 |
| CMS Investments Group Ltd | Financial services | 2019 |
| CMS Kitchens & Bedrooms Ltd | Manufacturing | 2017 |
| CMS Promotions Limited | Administrative & support | 2021 |
| CMS Properties Limited | Real estate | 2012 |
| CMS Property Solutions Ltd | Real estate | 2015 |
| CMS Sales Consultancy Limited | Administrative & support | 2023 |
| CMS Traders Limited | Wholesale & retail | 2025 |
| Cmsk Ltd | Hospitality | 2019 |
| Cmsondrive Ltd | Transport & logistics | 2020 |
| CMT Flooring Limited | Construction | 2003 |
| CMT Rentals Limited | Real estate | 2021 |
| CMW Business Services Ltd | Administrative & support | 2018 |
| CMW Housing Support Ltd | Real estate | 2022 |
| CMZ UK Limited | Wholesale & retail | 2005 |
| CN (Birmingham) Ltd | Wholesale & retail | 2017 |
| CN Locum Services Limited | Wholesale & retail | 2020 |
| CN Management Consultants Limited | Professional & scientific | 2020 |
| CNA Enterprises Limited | Real estate | 2002 |
| CNC Group Holdings Limited | Construction | 2003 |