| Crispol Limited | Transport & logistics | 2011 |
| Crisprop Limited | Real estate | 2022 |
| Crispy Fish & Pizza 2022 Ltd | Hospitality | 2022 |
| Crist Clean Ltd | Administrative & support | 2024 |
| Cristallo DI Luna Ltd | Wholesale & retail | 2020 |
| Cristina D Ltd | Transport & logistics | 2025 |
| Cristma People Ltd | Administrative & support | 2025 |
| Cristmat Clean Ltd | Administrative & support | 2024 |
| Cristocapital Ltd | Financial services | 2025 |
| Cristy&Cleaning Ltd | Administrative & support | 2025 |
| Criterion Healthcare Holdings Limited | Administrative & support | 1998 |
| Criterion Healthcare PLC | Health & social care | 1997 |
| Critical HIT Cards & Collectibles Ltd | Wholesale & retail | 2025 |
| Critical INK (Leeds) Ltd | Other services | 2015 |
| Critter Corner Ltd | Wholesale & retail | 2026 |
| Crius Consulting Limited | Professional & scientific | 2023 |
| Crjpropertiesleeds Ltd | Real estate | 2025 |
| Crkg Ltd | Transport & logistics | 2026 |
| CRL Studios LLP | | 2025 |
| CRL Studios Services Limited | Administrative & support | 2026 |
| Crocaslug Enterprises Ltd | Hospitality | 2023 |
| Crocchi Investments Limited | Real estate | 2018 |
| Crocketts Limited | Professional & scientific | 2008 |
| Crocodile (Dundee) NO.1 Limited | Real estate | 2018 |
| Crocodile (Dundee) NO.2 Limited | Real estate | 2018 |
| Crocodile (Dundee) NO.3 Limited | Real estate | 2018 |
| Crocodile (Dundee) NO.4 Limited | Real estate | 2018 |
| Crocodile (Dundee) NO.5 Limited | Real estate | 2018 |
| Crocodile (Dundee) Partnership NO. 6 LLP | | 2018 |
| Croft (East Midlands) Limited | Administrative & support | 2016 |
| Croft Carehomes Limited | Health & social care | 1998 |
| Croft Court (Horsforth) Limited | Households | 1982 |
| Croft Enterprises Limited | Transport & logistics | 2024 |
| Croft Financial Solutions Limited | Financial services | 2021 |
| Croft House Concepts Limited | Wholesale & retail | 1987 |
| Croft House Management Company Limited | Households | 1984 |
| Croft House Properties LLP | | 2012 |
| Croft Plumbing & Heating Solutions Ltd | Construction | 2026 |
| Croft Residential Twfc Limited | Real estate | 2015 |
| Crofters Green (Killinghall) Management Company Limited | Households | 2019 |
| Crofton Carbon Ltd | Mining & quarrying | 2019 |
| Croma Investments Ltd | Financial services | 2023 |
| Crombie Plumbing and Heating Solutions Ltd | Construction | 2015 |
| Cromsdale Estates Limited | Real estate | 2018 |
| Cromsdale Holdings Limited | Professional & scientific | 2020 |
| Cromsdale Residential Limited | Other services | 2017 |
| Cromwell Letting Limited | Real estate | 2020 |
| Cronos AI Limited | Information & communication | 2023 |
| Croocked Clocks Ltd | Hospitality | 2022 |
| Crook Stores Ltd | Wholesale & retail | 2022 |
| Crooked Clock Limited | Hospitality | 2017 |
| Crookesmoor Court Management Company Ltd | Households | 2017 |
| Crookshank Investments | Financial services | 2017 |
| Crookshank Properties Limited | Real estate | 2013 |
| Crosfill & Archer Claims Limited | Administrative & support | 2014 |
| Cross Border Web Ltd | Information & communication | 2022 |
| Cross Checked Limited | Extraterritorial | 2025 |
| Cross Fever Limited | Financial services | 2019 |
| Cross Gates Grill Ltd | Hospitality | 2025 |
| Cross Gates Primary Care Limited | Health & social care | 2024 |
| Cross Green (Leeds) Ltd | Construction | 2016 |
| Cross Green Auto Limited | Wholesale & retail | 2019 |
| Cross Green Lane Limited | Construction | 2016 |
| Cross Keys Holdings Ltd | Financial services | 2018 |
| Cross Osas Benjamin Ltd | Transport & logistics | 2023 |
| Cross Royd Consulting Limited | Professional & scientific | 2024 |
| Cross Stratum Limited | Wholesale & retail | 2020 |
| CROSS4FIT Ltd | Arts & recreation | 2018 |
| Crossbank Property Solutions Limited | Real estate | 2019 |
| Crossbow UK Holdings Ltd | Financial services | 2025 |
| Crosscheck Plumbing & Heating Ltd | Construction | 2025 |
| Crossco (1317) Limited | Financial services | 2013 |
| Crossco (1318) Limited | Financial services | 2013 |
| Crossco (1385) Limited | Professional & scientific | 2014 |
| Crossco (1386) Limited | Professional & scientific | 2014 |
| Crosscut Collective Ltd | Information & communication | 2019 |
| Crossfader Investments Ltd | Financial services | 2020 |
| Crossfader Ltd | Other services | 2014 |
| Crossfit Elite UK Limited | Arts & recreation | 2014 |
| Crossgate Hand Car Wash & Valeting Ltd | Administrative & support | 2021 |
| Crossgate Road Store Ltd | Wholesale & retail | 2021 |
| Crossgate Supermarket Ltd | Wholesale & retail | 2025 |
| Crossgates Press Limited | Real estate | 2010 |
| Crossgates Shop Ltd | Wholesale & retail | 2026 |
| Crossgates Specsavers Limited | Wholesale & retail | 1994 |
| Crossgates Stop N Shop Ltd | Wholesale & retail | 2010 |
| Crossgates Vape (Leeds) Ltd | Wholesale & retail | 2025 |
| Crossgates Visionplus Limited | Wholesale & retail | 1994 |
| Crossgates-Tech Limited | Information & communication | 2021 |
| Crossgreen Investments Limited | Water & waste | 2014 |
| Crosshills Fisheries (Yorkshire) Limited | Financial services | 2013 |
| Crossing Leeds Limited | Hospitality | 2026 |
| Crossing WL Limited | Hospitality | 2026 |
| Crossland & Co. Metals Limited | Wholesale & retail | 2014 |
| Crossland Research Limited | Administrative & support | 2009 |
| Crosslane Partners LLP | | 2013 |
| Crossley Consultancy Ltd | Professional & scientific | 2019 |
| Crossley Property Management (Yorkshire) Ltd | Real estate | 2023 |
| Crossley Scott Limited | Administrative & support | 2007 |
| Crossway Services Limited | Health & social care | 2004 |