| Cedras Design Ltd | Wholesale & retail | 2019 |
| Cedric Lobo Consultancy Limited | Professional & scientific | 2016 |
| Ceecee Surprises Ltd | Hospitality | 2022 |
| Ceeeempire Ltd | Arts & recreation | 2025 |
| CEL Residential Limited | Real estate | 2022 |
| Celaj Limited | Professional & scientific | 2019 |
| Cele PAS Ltd | Manufacturing | 2022 |
| Celeb Property Group Ltd | Real estate | 2023 |
| Celes Services Ltd | Information & communication | 2025 |
| Celes Systems UK Ltd | Information & communication | 2022 |
| Celestis Care Limited | Health & social care | 2020 |
| Celiver Ltd | Transport & logistics | 2021 |
| Cellar Door Promotions Limited | Professional & scientific | 2007 |
| Celmes Ltd | Information & communication | 2026 |
| Celtic FOX Ltd | Hospitality | 2016 |
| Cemek Cleaning and Logistices Ltd | Transport & logistics | 2025 |
| Cenai Ltd | Information & communication | 2025 |
| Center for Education Exchange Limited | Education | 2024 |
| Centr-Link Limited | Administrative & support | 2025 |
| Central C Residents Limited | Households | 2001 |
| Central Cafe Limited | Hospitality | 2010 |
| Central Home Appliances Limited | Wholesale & retail | 2025 |
| Central House Crawley (Resi) LLP | | 2015 |
| Central Parade Business Partnership Limited | Administrative & support | 2012 |
| Central UK Construction Ltd | Construction | 2023 |
| Centrale Express Ltd | Wholesale & retail | 2019 |
| Centre for Research on Horn of Africa Ltd | Other services | 2025 |
| Centre Square Lifestyle Ltd | Real estate | 2019 |
| Centrepoint House Limited | Real estate | 2006 |
| Centric Close Management Company Limited | Households | 2017 |
| Centrium I & II Management Limited | Extraterritorial | 2013 |
| Centro (the Atrium) Management Limited | Households | 2007 |
| Centronic Group Limited | Professional & scientific | 2014 |
| Centronic Holdings Limited | Professional & scientific | 1977 |
| Centrum (Bristol) Management Limited | Households | 2007 |
| Centurion Court (ST Albans) Management Company Limited | Households | 2004 |
| Centurion Park (Moulton Chapel) Management Limited | Households | 2021 |
| Century 19 Properties Ltd | Real estate | 2023 |
| Century Properties International Ltd | Other services | 2012 |
| Century Way Management Company Limited | Households | 2012 |
| CEO Capital Ltd | Financial services | 2017 |
| CEO Holdings Ltd | Financial services | 2024 |
| CEO Planner Ltd | Wholesale & retail | 2021 |
| CEO Trades Ltd | Information & communication | 2024 |
| CEOLIFE8TYLE Ltd | Arts & recreation | 2024 |
| Ceosignatures Ltd | Other services | 2023 |
| Cepgh Solutions Limited | Construction | 2014 |
| Cerad Covenant Consulting Ltd | Manufacturing | 2015 |
| Ceramel Limited | Manufacturing | 1999 |
| Ceramic Automotive Ltd | Wholesale & retail | 2022 |
| Ceramoda Limited | Manufacturing | 2025 |
| Cerberus Fire & Security Limited | Construction | 2010 |
| Cerro Catedral Limited | Professional & scientific | 2008 |
| Certaim Limited | Manufacturing | 1984 |
| Certified Tyres Ltd | Wholesale & retail | 2024 |
| Cesa Catering Ltd | Hospitality | 2018 |
| Cesa Investments Ltd | Real estate | 2018 |
| Cesan Properties Ltd | Real estate | 2025 |
| Cesenado Property Group Ltd | Real estate | 2026 |
| Ceylon Cottage Ltd | Hospitality | 2024 |
| CFA Academy Ltd | Education | 2021 |
| CFA Network Ltd | Financial services | 2022 |
| Cfom Ltd | Extraterritorial | 2022 |
| Cfroofing Limited | Construction | 2009 |
| Cfrus Autos Limited | Wholesale & retail | 2023 |
| CFS Projects Ltd | Construction | 2025 |
| CG Cafe Ltd | Hospitality | 2025 |
| CG Electronics UK Ltd | Administrative & support | 2017 |
| CG Training Centre Ltd | Education | 2024 |
| CGA Advisors Limited | Professional & scientific | 2024 |
| CGC Properties(Uk) Ltd | Real estate | 2017 |
| CH Fabrics Limited | Wholesale & retail | 2025 |
| Chadwick Court RTM Company Ltd | Households | 2015 |
| Chai Hoppers Ltd | Hospitality | 2024 |
| Chai Kadai Croydon Ltd | Hospitality | 2024 |
| Chaing Equities Limited | Professional & scientific | 2018 |
| Chaji Matcha Club Ltd | Wholesale & retail | 2026 |
| Chalfont Health Care Limited | Wholesale & retail | 2003 |
| Chalice Homes Limited | Construction | 2012 |
| Chalkers Lane Management Company Limited | Households | 2012 |
| Chalton Place Management Limited | Households | 2008 |
| Chamberlain & Chamberlain Group Limited | Other services | 2017 |
| Chamberlain Rise (Basingstoke) Management Company Limited | Households | 2016 |
| Chamberlin Sports Limited | Information & communication | 2004 |
| Chambers Townsend Consultancy Limited | Information & communication | 1985 |
| Chambers Townsend Holdings Limited | Information & communication | 2009 |
| Chameleon Construction Services Limited | Construction | 2006 |
| Chameleon Music Limited | Information & communication | 2016 |
| Chameleon VIP Ltd | Hospitality | 2018 |
| Chameleon-Co (UK) Limited | Manufacturing | 2021 |
| Champion Landscaping Ltd | Administrative & support | 2020 |
| Champion Mobile Global Ltd | Information & communication | 2018 |
| Champion Property Investments Ltd | Real estate | 2025 |
| Champion Tutors Services Ltd | Education | 2024 |
| Champions of Change (UK) Limited | Information & communication | 2023 |
| Championship Point Group Limited | Financial services | 2025 |
| Champor-Champor Limited | Hospitality | 2011 |
| Champs Enterprise Limited | Construction | 2026 |
| Chance Family Holdings Limited | Information & communication | 2026 |
| Chandlers Reach Management Company Limited | Households | 1996 |