| Cbsmas Services Limited | Professional & scientific | 2026 |
| CBZ Vision Ltd | Information & communication | 2023 |
| CC &C Health Care Limited | Health & social care | 2015 |
| CC 168 Limited | Hospitality | 2026 |
| CC Dining Limited | Hospitality | 2025 |
| CC Private (202) Limited | Professional & scientific | 2011 |
| CC Private (205) Limited | Professional & scientific | 2012 |
| CCG Topco Limited | Financial services | 2022 |
| CCM (Desford) Limited | Water & waste | 2012 |
| CCM Property Developers Limited | Real estate | 2022 |
| CCT Roofing Ltd | Construction | 2021 |
| Cctyoung Limited | Real estate | 2016 |
| CD Consult Ltd | Administrative & support | 2020 |
| CD Melton Ltd | Hospitality | 2025 |
| CDA Bespoke Furnishings Ltd | Manufacturing | 2010 |
| Cdar Business and Property Law Ltd | Professional & scientific | 2019 |
| CDB Birchgrove Road Ltd | Construction | 2025 |
| CDB CAD Design Ltd | Professional & scientific | 2017 |
| CDB Castle Mews Ltd | Construction | 2022 |
| CDB Castle Mews Rental Ltd | Real estate | 2026 |
| CDB Market Place Ltd | Construction | 2023 |
| CDG Properties Limited | Real estate | 2019 |
| CDG Property (Leicester) Limited | Real estate | 2020 |
| CDH FM Ltd | Administrative & support | 2025 |
| CDI Transport and Logistics Ltd | Transport & logistics | 2023 |
| CDJ Finance Limited | Administrative & support | 2012 |
| CDJ Property Holdings Limited | Real estate | 2021 |
| Cdjc Limited | Financial services | 2024 |
| CDM Comply Ltd | Information & communication | 2026 |
| CDM Surveys Limited | Administrative & support | 2016 |
| CDP OPS Ltd | Information & communication | 2025 |
| CDP Properties Limited | Real estate | 2015 |
| CDS Consultants Limited | Professional & scientific | 2018 |
| CDX Retailers Ltd | Wholesale & retail | 2023 |
| Ceba Electrical Ltd | Construction | 2021 |
| Cecence Limited | Professional & scientific | 2014 |
| Cecesh Limited | Health & social care | 2022 |
| Cedar (Queen's Drive) Limited | Real estate | 2002 |
| Cedar Accountancy Limited | Professional & scientific | 2013 |
| Cedar Business Solutions Limited | Professional & scientific | 2012 |
| Cedar Court Care Ltd. | Health & social care | 2004 |
| Cedar Dunn Estates Limited | Real estate | 2026 |
| Cedar Hospitality Ltd | Administrative & support | 2017 |
| Cedar House (the Point) Limited | Real estate | 2005 |
| Cedar House Investments Limited | Construction | 1997 |
| Cedar Housing Limited | Real estate | 2019 |
| Cedar Lawns Management Company Limited | Households | 2017 |
| Cedar Lodge Consulting Ltd | Professional & scientific | 2022 |
| Cedar PMC Blind 8 Ltd | Wholesale & retail | 2022 |
| Cedar Point Global Ltd | Professional & scientific | 2023 |
| Cedar Press Limited | Manufacturing | 2016 |
| Cedars Childcare Ltd | Health & social care | 2024 |
| Cedars Health Solutions Ltd | Health & social care | 2022 |
| Cedarwood Group Limited | Financial services | 2023 |
| Cedarwood Recruitment Limited | Administrative & support | 2023 |
| Cedistream Ltd | Information & communication | 2025 |
| Ceephee 2025 UK Limited | Professional & scientific | 2025 |
| Cefc Housing Ltd | Real estate | 2023 |
| CEG Technology UK Limited | Energy | 2013 |
| Ceiling Suppliers Ltd | Construction | 2022 |
| Ceiling to Floor Plastering Limited | Construction | 2013 |
| CEL Sports Coaching LLP | | 2023 |
| CEL Sports Limited | Wholesale & retail | 2020 |
| Celebrate OUR Similarities - COS CIC | Health & social care | 2021 |
| Celebrating Connections Ltd | Education | 2024 |
| Celebration Assets Limited | Real estate | 2016 |
| Celebration Investments Limited | Professional & scientific | 2012 |
| Celebration Merthyr Limited | Real estate | 2020 |
| Celentano Transport Ltd | Transport & logistics | 2019 |
| Celerica Limited | Professional & scientific | 2009 |
| Celeste Hotels Limited | Hospitality | 2025 |
| Celestial Axis Ltd | Wholesale & retail | 2026 |
| Celestial Career Connections Ltd | Professional & scientific | 2024 |
| Celestial Church of Christ Land of Glory Parish Ltd | Other services | 2025 |
| Celestial Firework Displays Ltd | Arts & recreation | 2021 |
| Celestial Habitat Limited | Real estate | 2020 |
| Celestial Solutions Limited | Information & communication | 2026 |
| Celestine & MAE Ltd | Wholesale & retail | 2025 |
| Celestral Solutions Ltd | Information & communication | 2026 |
| Celfone Trading Limited | Wholesale & retail | 2006 |
| Celgas Investment Limited | Real estate | 2025 |
| Celljoy Ltd | Wholesale & retail | 2025 |
| Celloglas Leicester Limited | Manufacturing | 2024 |
| Celltherm Coldrooms Limited | Other services | 1996 |
| Celsius Tanning Ltd | Other services | 2016 |
| Celtique Limited | Information & communication | 1995 |
| Celtrade Corporate Holdings Limited | Financial services | 2022 |
| Celtrade Limited | Wholesale & retail | 2014 |
| Celvista Limited | Real estate | 2015 |
| CEN Body Ltd | Wholesale & retail | 2025 |
| Cennet Ltd | Information & communication | 2000 |
| Cense Restaurants Limited | Wholesale & retail | 2011 |
| Censea Consultancy Ltd | Information & communication | 2014 |
| Centaur Enterprises Limited | Arts & recreation | 1982 |
| Centauri Care Ltd | Health & social care | 2022 |
| Centauri Group Ltd | Real estate | 2022 |
| Centennial Care Limited | Health & social care | 2019 |
| Centeno Group Ltd | Administrative & support | 2017 |
| Centorian Investment Ltd | Real estate | 2016 |
| Central Accountants Ltd | Professional & scientific | 2019 |