| CRS Consultants Holdings Limited | Financial services | 2007 |
| CRS Consultants Limited | Financial services | 1988 |
| Crystal Clear Accountancy Limited | Professional & scientific | 2011 |
| Crystal Developments Limited | Construction | 2006 |
| CS Professional Limited | Administrative & support | 2024 |
| CSA Valves UK Limited | Construction | 2019 |
| CSJ Automotive Ltd | Wholesale & retail | 2026 |
| CSM Svcs Ltd | Construction | 2025 |
| Ctrlc Information Services Ltd | Information & communication | 2014 |
| Cube Lighting and Design Ltd | Manufacturing | 2016 |
| Cuddington & Sandiway Parish Playing Fields Association Limited | Other services | 2003 |
| Cuddington Manor Farm Limited | Agriculture & fishing | 2014 |
| Cuirass Systems Ltd | Public administration | 2025 |
| Cult Marketing Group Limited | Professional & scientific | 2024 |
| Cultivating Finance Ltd | Professional & scientific | 2021 |
| Current Compliance Ltd | Construction | 2013 |
| Cutis Health Limited | Professional & scientific | 2013 |
| Cutting Farm Limited | Administrative & support | 2013 |
| Cutting Media Limited | Information & communication | 2010 |
| Cvmj Limited | Real estate | 2022 |
| CW8 Productions Ltd | Arts & recreation | 2021 |
| CW9 CAD Services Ltd | Construction | 2016 |
| CWL Storage Limited | Transport & logistics | 2021 |
| Cwrp Manchester Limited | Real estate | 2016 |
| Cybvanhire Limited | Hospitality | 2024 |
| Cygnet Group Limited | Professional & scientific | 2006 |
| Cygnet Property Limited | Real estate | 2011 |
| Cygnet Texkimp Limited | Manufacturing | 2000 |
| Cygnus Technologies Limited | Information & communication | 2000 |
| Cyperion Solutions Ltd | Professional & scientific | 2025 |
| D & B Rudd & SON Limited | Agriculture & fishing | 2002 |
| D & M Supervisors Ltd. | Professional & scientific | 2010 |
| D & S Cable Jointing Ltd | Construction | 2020 |
| D & W Autos Bodyshop Limited | Wholesale & retail | 2025 |
| D a Bailey Decorating Limited | Construction | 2003 |
| D B I Developments Ltd | Construction | 2016 |
| D C Brazendale Heating Ltd | Energy | 2017 |
| D C E Ventures Limited | Administrative & support | 2004 |
| D C Lomas Limited | Wholesale & retail | 2011 |
| D I Phillips Ltd | Information & communication | 2018 |
| D R Ford Commercials Limited | Wholesale & retail | 2020 |
| D R Ford Limited | Construction | 2018 |
| D Woodhouse Limited | Education | 2013 |
| D&C Footprint Ltd | Manufacturing | 2025 |
| D&D NW Maintenance Limited | Administrative & support | 2019 |
| D&J Resourcing Ltd | Manufacturing | 2008 |
| D. D. H. Electrical Limited | Construction | 1999 |
| D.A.Anderson Consulting Ltd | Professional & scientific | 2023 |
| D.H.H. Property Investments Limited | Manufacturing | 2007 |
| D.Ingham Plumbing & Heating Limited | Construction | 2024 |
| D224 Consultation Limited | Professional & scientific | 2023 |
| Da.V.E + Co Visualisation Limited | Professional & scientific | 2017 |
| Daily Roasters Limited | Manufacturing | 2026 |
| Daka Plumbing Heating & Renewables Ltd | Construction | 2025 |
| Dalaform Limited | Professional & scientific | 1994 |
| Dales Pharmaceuticals Limited | Professional & scientific | 1949 |
| Dale’S Light Restoration Ltd | Wholesale & retail | 2026 |
| Dame Hygiene Services Ltd | Water & waste | 2004 |
| Damian D Limited | Transport & logistics | 2019 |
| Damion Baker Limited | Wholesale & retail | 2022 |
| DAN Community | Arts & recreation | 2011 |
| Dancing Robot Productions Ltd | Information & communication | 2023 |
| Dandelion Records, Cd's and Dvd's Limited | Information & communication | 2007 |
| Dandr IT Ltd | Information & communication | 2025 |
| Dane Architecture Limited | Professional & scientific | 2016 |
| Dane Excavations Limited | | 1968 |
| Daniel Butterworth Builders Ltd | Construction | 2016 |
| Daniel Wright | Professional & scientific | 2016 |
| Danielle Ashley (Activities) Limited | Education | 2018 |
| Dara Solutions Ltd | Professional & scientific | 2015 |
| Dargo Service Ltd | Transport & logistics | 2016 |
| Darkside Audio Visual Limited | Professional & scientific | 2020 |
| Darnhall Consultancy Limited | Professional & scientific | 2024 |
| Darren Crane Limited | Construction | 2019 |
| Darren Davies Building Contractors Limited | Construction | 2014 |
| Dart Forma Ltd | Manufacturing | 2025 |
| Darts Chester Limited | Manufacturing | 2003 |
| Dash Estates Ltd | Households | 2025 |
| Dash Group Ltd | Professional & scientific | 2026 |
| Dash Pharma Consulting Limited | Professional & scientific | 2023 |
| Data Literacy Academy Ltd | Information & communication | 2022 |
| Data Monkeys Ltd | Information & communication | 2022 |
| DAU Limited | Professional & scientific | 2005 |
| Dave Leigh Electrical Limited | Construction | 2013 |
| Dave's Gym Fitness Centre Limited | Arts & recreation | 2026 |
| Davenham Gutter Clearing Limited | Administrative & support | 2025 |
| Davenham Ltd | Real estate | 2018 |
| David Nield Limited | Information & communication | 2013 |
| David Pearson Consultancy Limited | Water & waste | 2003 |
| David W Owen Ltd | Professional & scientific | 2018 |
| Davyhulme Road Private Day Nursery Ltd | Health & social care | 2023 |
| Daysoy Limited | Information & communication | 1995 |
| Dazzle Cleaners Ltd | Administrative & support | 2019 |
| DBA Sport C.I.C. | Arts & recreation | 2012 |
| Dbco LLP | | 2008 |
| DCE Property Services Limited | Real estate | 2007 |
| DCT Investments Limited | Professional & scientific | 1991 |
| DCT Services Limited | Administrative & support | 1980 |
| DE Facto Research Limited | Administrative & support | 2009 |
| Deadrock Brand Ltd | Wholesale & retail | 2022 |