| Cobley Consulting Ltd | Information & communication | 2021 |
| Cobot Automation Ltd | Manufacturing | 2026 |
| Coggia CIC | Arts & recreation | 2026 |
| Colecraft Engineering Limited | Manufacturing | 1974 |
| Colecraft Holdings Limited | Financial services | 2025 |
| Colecraft Limited | Administrative & support | 2006 |
| Collett Construction Midlands Ltd | Construction | 2024 |
| Collins, James and Co Limited | Real estate | 2015 |
| Compiled Creations Limited | Information & communication | 2014 |
| Connaught Green Limited | Professional & scientific | 2010 |
| Conscious Creatures Ltd | Manufacturing | 2025 |
| Consultansea Limited | Administrative & support | 2026 |
| Convertix Infrastructure Partners Limited | Financial services | 2026 |
| Coralyn Pickard Limited | Health & social care | 2021 |
| Core Fibre Ltd | Information & communication | 2021 |
| Coredeal Ltd | Real estate | 2026 |
| Correia Studios Ltd | Arts & recreation | 2024 |
| County Contractors Consulting Limited | Professional & scientific | 2011 |
| Covcomm Limited | Extraterritorial | 2006 |
| COX Family Property Group Limited | Real estate | 2021 |
| CPF Consulting Limited | Professional & scientific | 2025 |
| CR Transportation Ltd | Wholesale & retail | 2025 |
| Crandon Hill Limited | Real estate | 2023 |
| CRB Building Contractors Ltd | Construction | 2026 |
| Crcs Legal Ltd | Administrative & support | 2019 |
| Creative Plastics Limited | Manufacturing | 2008 |
| Crest Elevating Success Ltd | Professional & scientific | 2023 |
| Cronshaw Design Limited | Wholesale & retail | 2012 |
| Cronus Property Limited | Real estate | 2015 |
| Crown Aluminium Limited | Manufacturing | 1987 |
| Crown Consultancy Services Limited | Information & communication | 2018 |
| Crownstockton Ltd | Hospitality | 2024 |
| Ctrl ALT Denton Ltd | Information & communication | 2025 |
| CVR Supplies.Ltd | Extraterritorial | 2007 |
| CWM Faelog Limited | Agriculture & fishing | 2016 |
| D & P Plastering Contractors Limited | Construction | 2013 |
| D Munson Construction Ltd | Construction | 2026 |
| D R Tree Services Ltd | Administrative & support | 2025 |
| D&Pk Ltd | Real estate | 2019 |
| D&S C Enterprises Limited | Real estate | 2020 |
| D. Line (Haulage) Ltd | Transport & logistics | 2025 |
| Daldigital Ltd. | Information & communication | 2015 |
| DAM Design Creative Limited | Professional & scientific | 2014 |
| DAN Jean Ltd | Professional & scientific | 2015 |
| Danta Dent Limited | Health & social care | 2024 |
| Darare Limited | Wholesale & retail | 2011 |
| Dassett Build Co Ltd | Construction | 2025 |
| Dassett Dwelling Ltd | Hospitality | 2021 |
| Dassett Farms Limited | Agriculture & fishing | 1954 |
| Data Prophets Limited | Information & communication | 1996 |
| David P Ovens Engineering Consultancy Ltd | Professional & scientific | 2022 |
| DAW Brands Limited | Wholesale & retail | 2011 |
| Daydream Property Limited | Construction | 2024 |
| DC3 Design Limited | Administrative & support | 2011 |
| Deadline Holdings Limited | Financial services | 2024 |
| Dechaz Ltd | Real estate | 2021 |
| Dedek Homes Ltd | Real estate | 2025 |
| Dedek Ventures Ltd | Hospitality | 2025 |
| Deepam Technologies Limited | Information & communication | 2009 |
| Dekany Design Limited | Extraterritorial | 2015 |
| Deltaspeed Ltd | Professional & scientific | 2020 |
| Demp Consultancy Ltd | Professional & scientific | 2013 |
| Dendrology UK Ltd | Arts & recreation | 2025 |
| Design 4 Display Ltd | Professional & scientific | 2019 |
| DJ Wilkinson Ltd | Water & waste | 2022 |
| DJS Retail Sales Ltd | Information & communication | 2023 |
| DLA Holistics Ltd | Other services | 2019 |
| DLE Limited | Professional & scientific | 2026 |
| Dovecote Farm Ltd | Manufacturing | 2023 |
| Dowdeswell Limited | Real estate | 2020 |
| Downdraft UK Limited | Manufacturing | 2021 |
| Dptv Limited | Information & communication | 2007 |
| DR Hazel Skin Solutions Ltd | Health & social care | 2022 |
| DR Performance Limited | Professional & scientific | 2024 |
| Dreamline Engineering Ltd | Professional & scientific | 2016 |
| Drinks-Tech Ltd | Agriculture & fishing | 2022 |
| Driventic Limited | Manufacturing | 2025 |
| Drumm&Co Limited | Real estate | 2020 |
| Dsrl Holdings Ltd | Real estate | 2022 |
| Dsrl Property Ltd | Real estate | 2023 |
| DTC Partnership LLP | | 2025 |
| Dymond Services Ltd | Information & communication | 2026 |
| E Kounting Limited | Professional & scientific | 2015 |
| E-Collectable.Com Limited | Wholesale & retail | 2000 |
| E-Sqd Associates Limited | Professional & scientific | 2015 |
| Eadon Enterprise Ltd | Wholesale & retail | 2022 |
| Earlsdon Avenue North Limited | Real estate | 2018 |
| Easy Paint Ltd | Construction | 2025 |
| EAU Bathrooms Ltd | Construction | 2008 |
| ECI Rail Systems Limited | Professional & scientific | 2021 |
| ECM Maintenance Ltd | Construction | 2023 |
| Edgehill Farriery and Livery Ltd | Wholesale & retail | 2024 |
| Edna's Fabulous Holidays Limited | Hospitality | 2019 |
| Edward Gardner Surveys Limited | Professional & scientific | 2017 |
| Edward Taylor Race Support Ltd | Wholesale & retail | 2022 |
| EL & LI Bespoke Jewellers Ltd | Manufacturing | 2023 |
| ELEC3CORP Ltd | Professional & scientific | 2020 |
| Electricars TOW Tractors Limited | Manufacturing | 2017 |
| Elite Spiral Stairs Ltd | Manufacturing | 2009 |
| Ellie Bidmead Ltd | Professional & scientific | 2024 |