| 1878 Haulage Services Ltd | Transport & logistics | 2025 |
| 3 B 4 Flooring Limited | Extraterritorial | 2020 |
| 3 B 4 Holdings Limited | Extraterritorial | 2020 |
| 3D CAD & Engineering Ltd | Professional & scientific | 2016 |
| A Star Installations Ltd | Construction | 2024 |
| A.A.Scottdevelopments Limited | Construction | 2025 |
| A1 Bearings & Transmissions Ltd | Wholesale & retail | 2009 |
| Abbas (AS) Ltd | Wholesale & retail | 2024 |
| Abcdesign (NE) Ltd | Professional & scientific | 2024 |
| AC Railway Operations Safety Specialist Limited | Transport & logistics | 2022 |
| Achieve Coaching and Mentoring Limited | Professional & scientific | 2024 |
| Adidaphat Ltd | Other services | 2025 |
| Advanced Handling & Storage Limited | Wholesale & retail | 1991 |
| Aesthetics by Olivia Ltd | Other services | 2019 |
| AFILIA8 9JA Connects Limited | Information & communication | 2024 |
| AHS (Specialist Services) Ltd | Construction | 2014 |
| Aither Data Consultancy Ltd | Information & communication | 2023 |
| AJM Groundworks NE Ltd | Construction | 2024 |
| AJS Properties NE Limited | Real estate | 2020 |
| AK Waste Removal Ltd | Water & waste | 2025 |
| AKV Architectural Facades Limited | Manufacturing | 2016 |
| AKV Cladding Products Ltd | Manufacturing | 2011 |
| AKV Group Ltd | Financial services | 2015 |
| AKV Holdco Limited | Financial services | 2025 |
| Alan Reed Limited | Wholesale & retail | 1999 |
| Aldersons Garage Limited | Wholesale & retail | 2022 |
| Allure Estates Limited | Other services | 2015 |
| Allure Propco (BC) Limited | Real estate | 2006 |
| Alpha LUX Limited | Manufacturing | 2014 |
| Alpine Window Systems Ltd. | Construction | 1998 |
| Alpine Windows Limited | Manufacturing | 2015 |
| ANJ Builders NE Ltd | Construction | 2023 |
| Annamoe Limited | Information & communication | 2008 |
| ARC Health and Wellbeing Services Ltd | Health & social care | 2022 |
| Arcline Power and Civils Ltd | Construction | 2025 |
| Arcus Lgbt CIC | Information & communication | 2020 |
| Armex Direct Surplus Limited | Wholesale & retail | 2000 |
| Ashlink Limited | Wholesale & retail | 2018 |
| AT Roofing & Cladding (NE) Limited | Construction | 2022 |
| Barrier Holdings (NE) Ltd | Financial services | 2020 |
| Barrier Surveillance Systems Limited | Administrative & support | 1991 |
| Barwick Detailing Ltd | Administrative & support | 2025 |
| Batch Coffee Roasters Ltd | Wholesale & retail | 2022 |
| BDE Solutions Ltd | Manufacturing | 2025 |
| Birds Taxis Limited | Transport & logistics | 2016 |
| Bishop Juniors FC Ltd | Arts & recreation | 2017 |
| BJ2 Limited | Professional & scientific | 2013 |
| Blocktech Group Ltd | Administrative & support | 2025 |
| Blossom and Crown Ltd | Other services | 2019 |
| Blue Diamond Engineering Limited | Manufacturing | 1987 |
| Blue Diamond Machine Tools Limited | Wholesale & retail | 1987 |
| Boris Build Ltd | Construction | 2023 |
| Breaking Bread Restaurants Ltd | Hospitality | 2019 |
| Britneyks Ltd | Health & social care | 2025 |
| Butterfield Refurbishments Ltd | Construction | 2023 |
| Byerley Court Management Limited | Administrative & support | 2005 |
| C & EM Consulting Ltd | Professional & scientific | 2023 |
| C & J Couriers Limited | Transport & logistics | 2018 |
| C&D Civils Groundworks Limited | Construction | 2022 |
| C.R.D. Devices Ltd. | Manufacturing | 1995 |
| Caraleisure UK Ltd | Wholesale & retail | 2024 |
| Carpathian Group Limited | Financial services | 2015 |
| Caygill Properties Limited | Real estate | 2024 |
| CBM Building NE Ltd | Construction | 2026 |
| Chainlink Security Ltd | Administrative & support | 2024 |
| Change Plastering and Preservation Ltd | Construction | 2024 |
| Church Street Food (NE) Ltd | Hospitality | 2025 |
| Civic Properties Limited | Administrative & support | 2016 |
| CJB Retail Limited | Wholesale & retail | 2019 |
| Clad K Sheeting Services Ltd | Construction | 2014 |
| Claritas Business Consulting Limited | Professional & scientific | 2011 |
| Class G5 Locomotive Company Ltd | Manufacturing | 2007 |
| Classy Pawz Limited | Other services | 2019 |
| Clean to Shine Ltd | Administrative & support | 2025 |
| Coatham Connections Ltd | Wholesale & retail | 2025 |
| Comdec Limited | Construction | 2016 |
| Communities Church Ltd | Other services | 2025 |
| Compost Technology Limited | Manufacturing | 1995 |
| Connor's Heating Solutions Ltd | Energy | 2018 |
| Coram Technology Ltd | Information & communication | 2023 |
| Corelynk Limited | Energy | 2025 |
| Cosmetic Safety Consultants Ltd | Professional & scientific | 2010 |
| Coupe Group Limited | Construction | 2010 |
| Coupe Line Limited | Construction | 1990 |
| CP Masonry Limited | Construction | 2024 |
| CRD Devices (ME) Limited | Manufacturing | 2025 |
| CRD Group Ltd | Financial services | 2017 |
| Createcity Limited | Wholesale & retail | 1992 |
| Creature Comforts Ltd | Real estate | 2025 |
| Crown Construction (NE) Limited | Construction | 2013 |
| CS Blade Tech & Training Ltd | Manufacturing | 2026 |
| CS Electrics (NE) Ltd | Construction | 2020 |
| Cwildcoaching Ltd | Arts & recreation | 2025 |
| D Maughan Traffic Management Solutions Limited | Transport & logistics | 2025 |
| D&E Renewables Ltd | Manufacturing | 1987 |
| Decebal Finance Ltd | Financial services | 2024 |
| DEM Trans Ltd | Transport & logistics | 2016 |
| Diamond GEM Properties Limited | Real estate | 2021 |
| Diaz Management Limited | Real estate | 2007 |
| DJH FIC Limited | Financial services | 2025 |