| Clover Composites Limited | Wholesale & retail | 2024 |
| Coaching Culture Ltd | Information & communication | 2017 |
| Coblands Nurseries Limited | Construction | 2020 |
| Colin Graham Limited | Professional & scientific | 2007 |
| Comcare Computer Programming & Advisory Service Limited | Wholesale & retail | 1986 |
| Comcare Technology Limited | Wholesale & retail | 2000 |
| Commissioning LAB Ltd | Professional & scientific | 2010 |
| Communify Regeneration Services Limited | Information & communication | 2010 |
| Complete Clarity Limited | Education | 2007 |
| Componentmaker Limited | Information & communication | 2025 |
| Conexus Tuition Franchising Limited | Administrative & support | 2019 |
| Conexus Tuition Limited | Administrative & support | 2014 |
| Conexus Tuition LP | | 2024 |
| Conexus Tuition Lymm Limited | Administrative & support | 2018 |
| Consultancy Enasa Ltd | Other services | 2023 |
| Cooper Technical Integration Ltd | Professional & scientific | 2026 |
| Cornerstone Management Solutions Ltd | Information & communication | 2012 |
| Corrie Property Ltd | Construction | 2019 |
| Cottage Homecare Services Ltd | Health & social care | 2019 |
| CPC Group Ltd | Professional & scientific | 2025 |
| CPL Sameday Limited | Transport & logistics | 2020 |
| CPS Fire Protection Ltd | Professional & scientific | 2026 |
| Creative Steps Dance Ltd | Education | 2019 |
| Cribbin & Co Solicitors Ltd | Professional & scientific | 2018 |
| Cross Leisure Management Limited | Real estate | 2012 |
| Crouchley Close Management Limited | Households | 2025 |
| Croughan Holdings Ltd | Financial services | 2021 |
| Croughan Limited | Construction | 1996 |
| Crowdtracking UK Limited | Information & communication | 2025 |
| Crumbs INT Limited | Information & communication | 2025 |
| CRW 123 Ltd | Professional & scientific | 2010 |
| CRW Aviation Ltd. | Transport & logistics | 2000 |
| CRW Properties Ltd. | Real estate | 2009 |
| CRW Trading Co. Ltd. | Wholesale & retail | 2009 |
| CS Flooring Services Limited | Administrative & support | 2016 |
| CWR 2021 Limited | Administrative & support | 2004 |
| Cypher 7 Limited | Information & communication | 2021 |
| D S Electrical NW Limited | Construction | 2026 |
| D&B Commercial Ltd | Real estate | 2022 |
| D&B Estates Ltd | Real estate | 2015 |
| D&D Cleaning Company Ltd | Administrative & support | 2026 |
| Dafret Limited | Households | 2021 |
| Dafret Services Ltd | Professional & scientific | 2024 |
| Daisy Chains Limited | Health & social care | 2002 |
| Dakota Consultancy Ltd | Administrative & support | 2021 |
| Dandelions Early Childhood Ltd | Health & social care | 2015 |
| Danebank Development Management Limited | Households | 1980 |
| Danl Limited | Real estate | 2016 |
| Davanport Limited | Construction | 1997 |
| David Cope and Partners Limited | Financial services | 1990 |
| David Maddox Associates Limited | Professional & scientific | 1994 |
| David Woodyatt & Co. Limited | Professional & scientific | 1999 |
| Day Nurseries Limited | Administrative & support | 2005 |
| Daysie Ltd | Wholesale & retail | 2026 |
| Declan James Commercial Property Management Ltd | Real estate | 2011 |
| Declan James Ltd | Real estate | 2009 |
| Dent Delete UK Ltd | Wholesale & retail | 2021 |
| Dentmasteruk Ltd | Manufacturing | 2014 |
| Devtrain Limited | Information & communication | 2005 |
| DGF Project Consulting Services Ltd | Professional & scientific | 2013 |
| Digimock Limited | Other services | 2017 |
| DJB Motortec Ltd | Wholesale & retail | 2015 |
| Dmpk Consulting Limited | Professional & scientific | 2019 |
| Dryhill Properties Limited | Real estate | 2021 |
| Dsis Solutions Limited | Information & communication | 2014 |
| DTS Holding Group Limited | Financial services | 2023 |
| DTS Property Facilities Limited | Real estate | 2016 |
| Duke Property and Developments Ltd | Construction | 2020 |
| Dursley & Hurst Ltd | Manufacturing | 2001 |
| Dusted & Done Cleaning Services Ltd | Administrative & support | 2022 |
| Dutton DRY Dock Ltd | Manufacturing | 2020 |
| DW Medical Ltd | Health & social care | 2021 |
| Eagle Brow Consultancy Limited | Professional & scientific | 2023 |
| Early Birds Holdings Ltd | Financial services | 2023 |
| Early Birds Private Day Nursery Limited | Administrative & support | 1997 |
| Early Days (UK) Limited | Education | 2001 |
| EAU Rouge Strategy Ltd | Professional & scientific | 2026 |
| EB Investments Ltd | Real estate | 2017 |
| Ecorators Ltd | Hospitality | 2022 |
| Ecospheric Limited | Construction | 2011 |
| Edgefold Homes Limited | Construction | 2019 |
| Elahi Properties (MCR) Ltd | Real estate | 2023 |
| Elaine Young Limited | Health & social care | 2009 |
| Eldam Business Solutions Ltd | Professional & scientific | 2025 |
| Eldam Logistics Limited | Transport & logistics | 2024 |
| Electricalnw Ltd | Professional & scientific | 2025 |
| Elfa Bidco Limited | Financial services | 2026 |
| Elfa Manco Limited | Financial services | 2026 |
| Elfa Midco 1 Limited | Financial services | 2026 |
| Elfa Midco 2 Limited | Financial services | 2026 |
| Elfa Topco Limited | Financial services | 2026 |
| Elixir Forrester Huxu Limited | Wholesale & retail | 2024 |
| Ellipsis Consulting Ltd | Professional & scientific | 2025 |
| Elmfield House Painting & Decorating Limited | Construction | 2026 |
| Ember Fire and Security Ltd | Administrative & support | 2017 |
| END to END Media Limited | Arts & recreation | 2009 |
| Energize Corporate Services Limited | Administrative & support | 2018 |
| Energy Park North West Limited | Administrative & support | 2023 |
| ENM Legal Limited | Professional & scientific | 2026 |
| ENT Developments Limited | | 2008 |