| 17 Polworth Road Limited | Real estate | 2004 |
| 1ST Call Signs Limited | Wholesale & retail | 2015 |
| 3 AM Group Limited | Information & communication | 2021 |
| 39 One Limited | Information & communication | 1993 |
| 39 Production Company Limited(The) | Arts & recreation | 1985 |
| 4-KNEBWORTH Limited | Other services | 2008 |
| 5A Touch Ltd | Hospitality | 2025 |
| ABP Electrical Ltd | Construction | 2022 |
| Access Door Services Limited | Construction | 2003 |
| AD HOC Nationwide Ltd | Administrative & support | 2022 |
| Admiral Costumes Ltd | Arts & recreation | 2025 |
| Agile Talent Consulting Limited | Professional & scientific | 2023 |
| Alibhai Essa Ltd | Health & social care | 2021 |
| Alis Nutrior Ltd | Administrative & support | 2012 |
| ALL Star Equine Limited | Administrative & support | 2021 |
| Alpha Business Link Ltd | Hospitality | 2011 |
| Alphaplay Ltd | Information & communication | 2024 |
| Amazon Communications Limited | Professional & scientific | 1994 |
| Ambrose Solutions Ltd | Professional & scientific | 2018 |
| Amby Technologies Ltd | Wholesale & retail | 2022 |
| ANG Dempsey Ltd | Health & social care | 2022 |
| Angels Beauty & Aesthetics Ltd | Other services | 2025 |
| AOG Support Structures (UK) Ltd. | Manufacturing | 1991 |
| Aolm Limited | Education | 2024 |
| Appetise Ltd | Manufacturing | 2020 |
| Ardouin Rail Consultant Services Limited | Construction | 2014 |
| Ariann Leisure Limited | Hospitality | 1996 |
| Aruleo Solutions Limited | Information & communication | 2026 |
| ASH ABI & Aroosh Ltd | Wholesale & retail | 2016 |
| ASH Properties Direct Limited | Real estate | 2021 |
| Asiglia Limited | Professional & scientific | 2012 |
| Askchenai Ltd | Professional & scientific | 2024 |
| ASQ Sun Salute Ltd | Construction | 2025 |
| Atta Group Ltd | Wholesale & retail | 2023 |
| Auto Door Services Limited | Construction | 2002 |
| Automated Ohms Electrical and IT Services Limited | Information & communication | 2017 |
| Avelex Electrical Ltd | Construction | 2011 |
| B3MUK Limited | Wholesale & retail | 2016 |
| Badea Holdings Ltd | Financial services | 2025 |
| Baldock Industrial Recovery Ltd | Construction | 2023 |
| Barnett Technical Services Ltd | Construction | 2017 |
| BCC Construction Ltd | Construction | 2026 |
| BCE Nominees Limited | Financial services | 2022 |
| Bedwell-Enterprises Limited | Manufacturing | 2020 |
| Big Pink Bubble Limited | Education | 2010 |
| Bits and Bobs and Beyond Ltd | Wholesale & retail | 2023 |
| Blue HAT Logistics Ltd | Transport & logistics | 2024 |
| Boilergeeks 24/7 Ltd | Construction | 2013 |
| Bould Works Limited | Real estate | 2024 |
| BOUNCE4JOY Entertainment Limited | Hospitality | 2019 |
| Briarway Properties Limited | Real estate | 2023 |
| Bridgefield Investment Holdings Ltd | Real estate | 2018 |
| Building Wealth From Zero Ltd | Other services | 2026 |
| Burrells Health Ltd | Health & social care | 2025 |
| Business Development Processes Limited | Professional & scientific | 2003 |
| Buymeonce Limited | Wholesale & retail | 2016 |
| C&G Bathroom Solutions Limited | Construction | 2016 |
| Campaignistas Ltd | Professional & scientific | 2026 |
| Card Pantheon Ltd | Wholesale & retail | 2026 |
| Carver Golf Ltd | Wholesale & retail | 2024 |
| Carvers Croft Management Limited | Households | 2005 |
| Cawdor Investments Limited | Financial services | 1993 |
| Cawdor Stone Group Limited | Construction | 1986 |
| Caxton Advisors Limited | Administrative & support | 2003 |
| CC Brickwork Ltd | Construction | 2026 |
| CCZ and C Enterprises Limited | Wholesale & retail | 2020 |
| CG Administration Services Ltd | Administrative & support | 2026 |
| Charlton Classic Cars Ltd | Wholesale & retail | 2013 |
| Charmed Holidays Ltd | Hospitality | 2021 |
| Charter Technical Solutions Limited | Construction | 2010 |
| Christian James Trading Ltd | Wholesale & retail | 2013 |
| Chronos Expert Services Limited | Construction | 2025 |
| Cinnamon Teal Limited | Professional & scientific | 2025 |
| Cjexec Ltd | Construction | 2025 |
| Claire Spake Ltd | Information & communication | 2006 |
| Classic Pubs Limited | Hospitality | 2004 |
| Cobbold Land Limited | Real estate | 2017 |
| Company Motivation Limited | Professional & scientific | 1986 |
| Conduct Limited | Information & communication | 2015 |
| Connected Play Ltd | Wholesale & retail | 2025 |
| Cornerstone (Fairhaven) Limited | Extraterritorial | 2015 |
| Coverpeople Limited | Administrative & support | 2024 |
| Covetd Ltd | Wholesale & retail | 2026 |
| Cowan Drilling Services LLP | | 2004 |
| Cresthill Homes Ltd | Construction | 2022 |
| CRH Property Maintenance Limited | Construction | 2015 |
| Critical Response Training Ltd | Health & social care | 2016 |
| Crucial Media Services Ltd | Professional & scientific | 2020 |
| Crucible Engineering Ltd | Financial services | 2021 |
| Cworkspace Limited | Construction | 2024 |
| D and K Sendall Limited | Public administration | 2018 |
| DBY Logistics Ltd | Transport & logistics | 2025 |
| DC Electrix Ltd | Construction | 2024 |
| Deards Decorations Ltd | Construction | 2005 |
| Deards Property Holdings Ltd | Extraterritorial | 2021 |
| Dementia Outreach CIC | Health & social care | 2025 |
| Dhantan Village Wine Ltd | Wholesale & retail | 2018 |
| Dickie Planes and Engineering Solutions Limited | Manufacturing | 2014 |
| Dickies Dens Ltd | Manufacturing | 2024 |
| Digital View Group Limited | Manufacturing | 2002 |