| Command Studio Limited | Professional & scientific | 2026 |
| Complex Drylining Ltd | Construction | 2023 |
| Connected Computing Limited | Information & communication | 2018 |
| Construction Machinery Solutions Limited | Administrative & support | 2025 |
| Coogans Cookware Ltd | Manufacturing | 2024 |
| Cookies and Candy Arts Limited | Manufacturing | 2021 |
| Cosma & SON Electrical Ltd | Administrative & support | 2017 |
| Cosyrent Limited | Real estate | 2024 |
| Covenant Medical Consulting Limited | Health & social care | 2009 |
| Coverite Air Conditioning Services Limited | Construction | 1987 |
| COW Boy's Planet Limited | Financial services | 2023 |
| Cozy NET Creations Ltd | Wholesale & retail | 2023 |
| CR21 Ltd | Construction | 2021 |
| Crep Collection Club Ltd | Wholesale & retail | 2020 |
| Cristals Property Ltd | Hospitality | 2024 |
| Crocodile Stores Limited | Transport & logistics | 2002 |
| Croft Wills & Estate Planning Limited | Professional & scientific | 2018 |
| Crownline Homes Ltd | Construction | 2025 |
| Croynia Ltd | Wholesale & retail | 2026 |
| Cultura Recruitment Services Ltd | Administrative & support | 2025 |
| Custom & Co Jewellery Ltd | Wholesale & retail | 2014 |
| CVO Solutions Ltd | Professional & scientific | 2026 |
| CWR Electrics Ltd | Construction | 2024 |
| Cyber Leader Ltd | Information & communication | 2018 |
| CYM Global Ltd | Professional & scientific | 2025 |
| Cyrus Yang Marketing Ltd | Professional & scientific | 2026 |
| DA1 Investments Limited | Real estate | 2013 |
| DA1 Services Ltd | Professional & scientific | 2016 |
| DAC Drive Limited | Transport & logistics | 2015 |
| Dafglobal Ltd | Information & communication | 2018 |
| Daisy Mayland Solutions Limited | Wholesale & retail | 2016 |
| Damanoz Consultancy Ltd | Real estate | 2019 |
| DAN Tee's Automobiles Ltd | Transport & logistics | 2020 |
| Dance Union Limited | Arts & recreation | 2013 |
| Danime Artwear Ltd | Wholesale & retail | 2025 |
| Dartford Car Wash Ltd | Wholesale & retail | 2020 |
| Darward Services Limited | Professional & scientific | 2025 |
| Daveidesign Limited | Other services | 2018 |
| David Sinclair Limited | Other services | 2021 |
| Dawn Johnston Ltd | Professional & scientific | 2015 |
| Day Finder Services Limited | Transport & logistics | 2018 |
| DCE Builders Ltd | Construction | 2025 |
| Decorating World Ltd | Construction | 2022 |
| Decretech Painting and Decorating Contractors Limited | Construction | 2015 |
| Deep Dive Media Limited | Information & communication | 2024 |
| Degrace UK Limited | Professional & scientific | 2015 |
| DEZ TR Ltd | Transport & logistics | 2024 |
| DIA Freight Ltd | Transport & logistics | 2017 |
| Dicot Services Limited | Information & communication | 2011 |
| Digital D&A Ltd | Professional & scientific | 2017 |
| Diledu Education Consultancy Ltd | Education | 2020 |
| Dimsin Workshop Ltd | Construction | 2025 |
| Dina Trans Ltd | Transport & logistics | 2020 |
| Diplaw Ltd | Wholesale & retail | 2020 |
| Dispersion Ltd | Information & communication | 2022 |
| Divine Dimensions Ltd | Wholesale & retail | 2025 |
| Divine Solution Ltd | Health & social care | 2012 |
| DJB Pharma Consulting Ltd | Professional & scientific | 2026 |
| Djshres Ltd | Professional & scientific | 2020 |
| DK Drones Ltd | Professional & scientific | 2025 |
| Dkg-Core Limited | Construction | 2014 |
| Dldistribution Ltd | Transport & logistics | 2019 |
| DLT Inc Ltd | Information & communication | 2024 |
| DM Luca Ltd | Transport & logistics | 2026 |
| DMD Care Limited | Health & social care | 2021 |
| DML Maintenance Limited | Construction | 2015 |
| DNA Drainage & Plumbing Specialist Limited | Construction | 2021 |
| Dnsa Property Ltd | Real estate | 2017 |
| Dnsa Services Ltd | Real estate | 2019 |
| Domainguard Ltd | Information & communication | 2026 |
| Domnew Limited | Health & social care | 2025 |
| Doodle Tutors Ltd | Education | 2018 |
| Doviliv Ltd | Transport & logistics | 2024 |
| DR a Chowdhury Limited | Health & social care | 2023 |
| DR a Short Ltd | Health & social care | 2023 |
| DR Nora UK Ltd | Health & social care | 2025 |
| DR Shirin Limited | Administrative & support | 2016 |
| DRH Creative Limited | Arts & recreation | 2015 |
| DRL Property Services Ltd | Construction | 2026 |
| DSJ Services Ltd | Construction | 2026 |
| DU Monde Solutions Ltd | Manufacturing | 2022 |
| Dunstan Trust Nominee Limited | Health & social care | 1970 |
| DUTZA92 Ltd | Transport & logistics | 2023 |
| E&E Law Limited | Professional & scientific | 2018 |
| Ebenezer Global Forecourts Ltd | Wholesale & retail | 2026 |
| Ebenezer Global Property Holding Ltd | Real estate | 2026 |
| Ebenezer Money Ltd | Information & communication | 2026 |
| Eclipse Worldwide Limited | Transport & logistics | 1999 |
| Eco Essence Trading Ltd | Wholesale & retail | 2024 |
| Ecosprig Ltd | Wholesale & retail | 2026 |
| Ed-Fed Ltd | Education | 2019 |
| Education Camps Global Limited | Education | 2025 |
| Edusource Limited | Education | 2016 |
| Ejoy Holdings Limited | Real estate | 2024 |
| Eland Collective Ltd | Wholesale & retail | 2026 |
| Eland Ltd | Financial services | 2026 |
| Electricity Transmission and Distribution Solutions Ltd | Construction | 2013 |
| Electrolite Consulting Ltd | Professional & scientific | 2013 |
| Elements Security Limited | Administrative & support | 2012 |
| Elite Aesthetics Limited | Administrative & support | 2013 |