| Crest Accounting Limited | Professional & scientific | 2013 |
| Crest Technical Holdings Limited | Financial services | 2016 |
| Crestify Ltd | Wholesale & retail | 2024 |
| Crestway Trading Limited | Wholesale & retail | 2025 |
| Creswell Place Limited | Administrative & support | 2012 |
| Crewit Resourcing Limited | Administrative & support | 1996 |
| Crewkerne Healthcare LLP | | 2011 |
| Crimson Fortune Feast Limited | Hospitality | 2025 |
| Crimson Lock Specialist Ltd | Manufacturing | 2025 |
| Crispy Biterz Ltd | Hospitality | 2024 |
| Crispy Cave Ltd | Hospitality | 2025 |
| Crissybee Limited | Other services | 2022 |
| Cristina Nascimento Ltd | Professional & scientific | 2016 |
| Critical Piece Ltd | Professional & scientific | 2015 |
| Crjain Limited | Households | 2024 |
| Crofame Ltd | Arts & recreation | 2025 |
| Croft Court Management Company Limited | Households | 1982 |
| Croft Farm Maintenance Company (Godmanchester) Limited | Households | 1983 |
| Croftduke Limited | Real estate | 1994 |
| Croham Hurst Financial Services Limited | Financial services | 2011 |
| Cromer Court (Crewe) Management Company Limited | Households | 1982 |
| Cromer Mobiles Ltd | Wholesale & retail | 2025 |
| Cromford View (Ripley) Management Company Limited | Households | 2006 |
| Cromwell Fields Management Company Limited | Households | 2012 |
| Cromwell Walk Management Company Limited | Households | 1988 |
| Cronin Associates Ltd | Other services | 2014 |
| Cronx Barber Croydon Ltd | Other services | 2026 |
| Cronxlive Limited | Hospitality | 2022 |
| Cronxthaifood Ltd | Hospitality | 2025 |
| Crosby Building Contractors Limited | Construction | 2012 |
| Cross Lances FLAT6 Limited | Households | 2020 |
| Crossways IDM Ltd | Professional & scientific | 2021 |
| Crossways Residents Company Limited | Households | 2014 |
| Crossways Supported Housing Ltd | Hospitality | 2020 |
| Crotech Limited | Wholesale & retail | 2022 |
| Crowborough Gardens Management Company Limited | Households | 2010 |
| Crowd Bucket Ltd | Wholesale & retail | 2021 |
| Crowd Link Consulting Ltd | Administrative & support | 2018 |
| Crowdstone Development Ltd | Real estate | 2026 |
| Crown & Grove Management Limited | Households | 2004 |
| Crown Accommodation Limited | Real estate | 2004 |
| Crown Accountancy Ltd | Professional & scientific | 2026 |
| Crown Analytics Limited | Information & communication | 2014 |
| Crown Autos Ltd | Wholesale & retail | 2025 |
| Crown Boys Mentoring CIC | Health & social care | 2013 |
| Crown Bridge Services Ltd | Transport & logistics | 2026 |
| Crown Builders London Ltd | Construction | 2018 |
| Crown Builders Services Ltd | Construction | 2018 |
| Crown Hill Cakes Limited | Wholesale & retail | 2024 |
| Crown Jules Properties Ltd | Real estate | 2020 |
| Crown Lane Gardens (Streatham) Residents Association Limited | Households | 1966 |
| Crown Leather Ltd | Wholesale & retail | 2025 |
| Crown Lets 4U Ltd | Real estate | 2015 |
| Crown Mews (Essex) Management Company Limited | Households | 2017 |
| Crown Realtor Ltd | Real estate | 2025 |
| Crown Rides Ltd | Transport & logistics | 2025 |
| Crown Yeast Company Limited | Wholesale & retail | 1966 |
| Crownbuy Ltd | Wholesale & retail | 2025 |
| Crowne House Limited | Real estate | 2024 |
| Crownedcareco Ltd | Wholesale & retail | 2025 |
| Crowthorne News (UK) Limited | Wholesale & retail | 2011 |
| Croxted Management Limited | Households | 1993 |
| Croydon Accountancy Limited | Professional & scientific | 2012 |
| Croydon Aesthetics Company Limited | Other services | 2020 |
| Croydon Affordable Dwellings LLP | | 2018 |
| Croydon Affordable Homes (Taberner House) LLP | | 2017 |
| Croydon Affordable Homes LLP | | 2017 |
| Croydon Affordable Tenures LLP | | 2018 |
| Croydon African Market Ltd | Wholesale & retail | 2024 |
| Croydon Airport Cars Ltd | Transport & logistics | 2026 |
| Croydon Asphalt Ltd | Construction | 2011 |
| Croydon Auto Colours Ltd | Wholesale & retail | 2023 |
| Croydon Auto Repair Ltd | Wholesale & retail | 2026 |
| Croydon Autos Ltd | Construction | 2024 |
| Croydon Bakery Limited | Hospitality | 2015 |
| Croydon Barbers Ltd | Other services | 2023 |
| Croydon BME Forum | Other services | 2003 |
| Croydon Boxing Gym Ltd | Education | 2019 |
| Croydon Building Services Ltd | Construction | 2023 |
| Croydon Business Association CIC | Other services | 2024 |
| Croydon Business Association Original CIC | Other services | 2026 |
| Croydon Business Crime Reduction Partnership Limited | Professional & scientific | 2009 |
| Croydon Business Venture Ltd | Administrative & support | 1983 |
| Croydon Carpets Limited | Construction | 1998 |
| Croydon Cars Ltd | Transport & logistics | 2026 |
| Croydon Cathay Construction Limited | Construction | 2013 |
| Croydon Cathay Development Limited | Construction | 2013 |
| Croydon Central Cafe Ltd | Hospitality | 2024 |
| Croydon Central Management Company Limited | Real estate | 2017 |
| Croydon Charcoal Grill Limited | Hospitality | 2023 |
| Croydon Chauffeurs Limited | Transport & logistics | 2018 |
| Croydon Cheatmeals Ltd | Hospitality | 2026 |
| Croydon Citizens Advice Bureaux Limited | Information & communication | 1987 |
| Croydon Coach Works Ltd | Wholesale & retail | 2025 |
| Croydon College of Excellence Limited | Education | 2025 |
| Croydon Commitment Limited | Administrative & support | 2007 |
| Croydon Community Enterprises Ltd | Extraterritorial | 2012 |
| Croydon Community Mediation | Administrative & support | 2000 |
| Croydon Community Social Hub CIC | Education | 2025 |
| Croydon Creative Enterprise CIC | Arts & recreation | 2022 |