| CW Clinical Services Limited | Manufacturing | 2015 |
| CWB Assessments Ltd | Health & social care | 2023 |
| Cyber Cart Ventures Limited | Wholesale & retail | 2023 |
| Cybernex Limited | Wholesale & retail | 2025 |
| Cyberpro Ltd | Information & communication | 2022 |
| CYD Blackpool Limited | Hospitality | 2019 |
| CYD Limited | Hospitality | 2015 |
| Cylco Ltd | Wholesale & retail | 2022 |
| Cyro Event and Medical Services Limited | Health & social care | 2024 |
| Cyro Services (NW) Ltd | Administrative & support | 2026 |
| Cytec Systems UK Limited | Manufacturing | 2001 |
| D & C Design Services Ltd | Professional & scientific | 2020 |
| D & D Orwell Property Ltd | Real estate | 2023 |
| D & D Property (NW) Ltd | Real estate | 2026 |
| D & D Property Lettings Ltd | Real estate | 2022 |
| D & J Autos MOT Centre Ltd. | Wholesale & retail | 2011 |
| D & J Rhodes Limited | Construction | 2021 |
| D & K Construction (NW) Ltd | Administrative & support | 2015 |
| D & M Windows & Doors Ltd | Construction | 2006 |
| D & N Electrical Ltd | Construction | 2011 |
| D & R Oldham Limited | Hospitality | 2025 |
| D & R Property Development & Management Limited | Construction | 2023 |
| D a & CW Bookkeeping & Accounting Limited | Professional & scientific | 2026 |
| D a Heating Engineers Ltd | Construction | 2025 |
| D a Sykes Groundwork and Excavation Ltd | Construction | 2014 |
| D and C Hely Consulting Limited | Professional & scientific | 2023 |
| D and J Racing Ltd | Arts & recreation | 2006 |
| D Asaya Limited | Health & social care | 2019 |
| D B Valeting Ltd | Administrative & support | 2021 |
| D Booth Ltd | Other services | 2015 |
| D C Building & Plastics Limited | Construction | 2022 |
| D C Heating Limited | Construction | 2002 |
| D C Rooflines Limited | Construction | 2016 |
| D Fabs Holdings Ltd | Financial services | 2025 |
| D H Financial Management Limited | Wholesale & retail | 2007 |
| D Hayden Capital Limited | Financial services | 2025 |
| D J Hayden Limited | Professional & scientific | 2024 |
| D J Network Solutions Limited | Professional & scientific | 2000 |
| D Jones Plastering Ltd | Construction | 2024 |
| D L Fletcher Hair Ltd | Other services | 2025 |
| D Lowe Decorators Ltd | Construction | 2020 |
| D M C Holdings (N/W) Limited | Financial services | 2008 |
| D Orwell Ltd | Administrative & support | 2012 |
| D P Kitchens and Bedrooms Limited | Wholesale & retail | 2018 |
| D R Sefton & Co (Secretarial) Ltd | Administrative & support | 2006 |
| D S I Maintenance Ltd | Administrative & support | 2008 |
| D S Owen (Construction) Limited | Construction | 2005 |
| D Valets/Detailing Limited | Wholesale & retail | 2025 |
| D W Analytical Limited | Manufacturing | 2003 |
| D Zaragozas Ltd | Health & social care | 2023 |
| D&D Investment Property Limited | Real estate | 2025 |
| D&D Realty Ltd | Real estate | 2024 |
| D&J Joiners Limited | Construction | 2022 |
| D&L Oldham Ltd | Hospitality | 2015 |
| D&L Price Limited | Health & social care | 2005 |
| D&M Kenny Roofing Specialists Ltd | Construction | 2017 |
| D&S Landscaping Services Ltd | Administrative & support | 2025 |
| D&S Services (Oldham) Ltd | Administrative & support | 2017 |
| D-Zynr (Oldham) Limited | Wholesale & retail | 2013 |
| D-Zynr World Limited | Wholesale & retail | 2020 |
| D. & J. Builders (North West) Ltd | Construction | 2005 |
| D. Maders Electrical Ltd | Construction | 2003 |
| D. Swindells & SON Limited | Construction | 2004 |
| D.Hanif Ltd | Wholesale & retail | 2023 |
| D.J.Motors Limited | Wholesale & retail | 2015 |
| D.Maya Limited | Wholesale & retail | 2024 |
| D.P. Firth Transport Limited | Transport & logistics | 2006 |
| D.W. Joinery & Construction Limited | Construction | 2008 |
| D11 Natural Foods Ltd | Wholesale & retail | 2015 |
| D3NTS Limited | Wholesale & retail | 2005 |
| D4L Properties Ltd | Construction | 2023 |
| D4U Wholesale Ltd | Wholesale & retail | 2025 |
| DA Consult Limited | Professional & scientific | 2018 |
| DA Prime Companion Services Ltd | Professional & scientific | 2024 |
| DAB 143 Ltd | Professional & scientific | 2025 |
| Daez Limited | Wholesale & retail | 2025 |
| Dafwyn Literarture Ltd | Arts & recreation | 2022 |
| DAI Duit Limited | Hospitality | 2025 |
| Daigwalaoriginal Ltd | Hospitality | 2026 |
| Daily Cartz Ltd | Wholesale & retail | 2026 |
| Daily Necessities Ltd | Wholesale & retail | 2023 |
| Daily Purchases Ltd | Wholesale & retail | 2021 |
| Daily Stop Express Ltd | Wholesale & retail | 2026 |
| Dairaa (Smc-Private) Limited | Public administration | 2025 |
| Daisy Nook Properties Limited | Real estate | 2024 |
| Dajs Business Services Limited | Professional & scientific | 2013 |
| Dalb Limited | Health & social care | 2002 |
| Dale Motor Sales Limited | Wholesale & retail | 2014 |
| Dale Street Warehouse Limited | Wholesale & retail | 1978 |
| Dalemick Properties Limited | Real estate | 2023 |
| Dalessi UK Ltd | Transport & logistics | 2024 |
| Dalestorth Motors Ltd | Wholesale & retail | 2018 |
| Dali Builder Ltd | Construction | 2025 |
| Dalili Ltd | Wholesale & retail | 2022 |
| Daly Power Limited | Manufacturing | 2025 |
| Damarco Services Limited | Health & social care | 2010 |
| Damasgo Limited | Hospitality | 2022 |
| Damaz Services Ltd | Professional & scientific | 2025 |
| Dame Property Group Limited | Construction | 2026 |
| Damian Gilder HGV Limited | Transport & logistics | 2019 |