| &Breathe Partnership Ltd | Professional & scientific | 2022 |
| 1 & 2 Gray Street Management Company Limited | Households | 2016 |
| 1 IP MAN Co Limited | Real estate | 2021 |
| 1 IP Management Limited | Real estate | 2021 |
| 1 Warren Ltd | Administrative & support | 2018 |
| 101 Web Solutions Ltd | Information & communication | 2019 |
| 107 Cromwell Road Limited | Real estate | 2019 |
| 13-19 the Close (Matlock) Management Company Limited | Real estate | 2015 |
| 1884 Haulage Services Limited | Transport & logistics | 2016 |
| 1ST Planner Ltd | Professional & scientific | 2011 |
| 1ST Vodka Limited | Manufacturing | 2023 |
| 2 Fishers Limited | Education | 2003 |
| 301 Automation Ltd | Manufacturing | 2015 |
| 3TREES Glamping Ltd | Hospitality | 2021 |
| 50 Teignmouth Road Limited | Households | 2004 |
| 5555 Ltd | Construction | 2023 |
| 7 Star Retail Limited | Wholesale & retail | 2025 |
| 7G Trading Algos Limited | Information & communication | 2015 |
| 8 Hours Ahead Ltd | Financial services | 2019 |
| A&J Bike Gear Ltd | Wholesale & retail | 2020 |
| A.J.F.'s Big Company Limited | Agriculture & fishing | 1996 |
| A.R. Cooper Builders Limited | Construction | 2006 |
| A.W.Robinson(Brassington)Limited | Construction | 1970 |
| A1 Sound Limited | Extraterritorial | 2017 |
| A6 Tree Care Ltd | Administrative & support | 2026 |
| AA Compliance Compass Ltd | Professional & scientific | 2026 |
| AAD Holdings Limited | Real estate | 2017 |
| AB Electrical Domestic & Commercial Limited | Energy | 2011 |
| Abigail Forsyth Ltd | Health & social care | 2020 |
| Acclimbatize Limited | Arts & recreation | 2007 |
| Acer Business Services Ltd | Professional & scientific | 2012 |
| ACS Bonsall Limited | Hospitality | 2025 |
| ACS Brewing Limited | Hospitality | 2023 |
| ACS Church Inn Limited | Hospitality | 2025 |
| Adam Squires Ltd | Information & communication | 2018 |
| Added Value Logistics Publications Limited | Information & communication | 1994 |
| Aditi Studios Ltd | Manufacturing | 2014 |
| ADR Services (Midlands) Ltd | Construction | 2015 |
| Advanced Industrial Repairs Limited | Professional & scientific | 2023 |
| AE Delivery Consulting Ltd | Professional & scientific | 2026 |
| AEC Protection Training Limited | Education | 2019 |
| Aero Forgings Bidco Limited | Financial services | 2019 |
| Aero Forgings Midco Limited | Financial services | 2019 |
| AEW Paddock Motors Limited | Wholesale & retail | 1975 |
| Afex Skin Care Ltd | Wholesale & retail | 2018 |
| Affordable Granite & Marble Co. Limited | Wholesale & retail | 2003 |
| African Accents Ltd | Wholesale & retail | 2018 |
| Agendashift Ltd | Information & communication | 2011 |
| Agua-Tek Limited | Manufacturing | 2011 |
| AI Development Hub Ltd | Information & communication | 2025 |
| Ailis Topley Consulting Ltd | Administrative & support | 2021 |
| Airbrush Body UK Limited | Other services | 2022 |
| Airdale Immigration Consultant Ltd | Professional & scientific | 2024 |
| Airnergy Ltd | Professional & scientific | 2022 |
| Aisa Property Limited | Real estate | 2017 |
| Albie's Food Ltd | Hospitality | 2023 |
| Albie's Gelato Ltd | Hospitality | 2024 |
| ALD Retail Limited | Wholesale & retail | 2024 |
| Alexander Howard (Optometry) Ltd | Health & social care | 2025 |
| Alexiam Consulting Limited | Professional & scientific | 2020 |
| Aligned Property Developments Ltd | Real estate | 2022 |
| Alimentum Solutions Limited | Professional & scientific | 2021 |
| Alker Ltd | Information & communication | 2011 |
| ALL Healthcare Solutions Ltd | Health & social care | 2025 |
| Allen's Skip Hire Limited | Water & waste | 2005 |
| Allfree Plant Ltd | Administrative & support | 2012 |
| Allison Railways Limited | Professional & scientific | 2008 |
| Allure Interiors Online Limited | Wholesale & retail | 2026 |
| Alma Hair & Beauty Ltd | Other services | 2021 |
| Almark Garage Limited | Wholesale & retail | 2009 |
| Aloeus Limited | Professional & scientific | 2024 |
| Alphadean Limited | Hospitality | 2019 |
| Aluminium Options Limited | Wholesale & retail | 1993 |
| AM Accounts Ltd | Professional & scientific | 2004 |
| Amanda Kelleher Ltd | Professional & scientific | 2025 |
| Ambery Glow Limited | Manufacturing | 2024 |
| Amilu Limited | Manufacturing | 2015 |
| Amosite Ltd | Information & communication | 2014 |
| AMP Technologies Group Limited | Wholesale & retail | 2010 |
| Anahata Bodhisattva Ltd | Extraterritorial | 2022 |
| Analytics Incorporated Ltd | Professional & scientific | 2023 |
| Andrew Burdett Design Ltd | Professional & scientific | 2018 |
| Andrew Hinchley Limited | Information & communication | 2009 |
| Andrew Sharpe Reproductions Limited | Manufacturing | 1976 |
| Andy Britland Photography Ltd. | Information & communication | 2020 |
| Angelos Bistro Limited | Hospitality | 2019 |
| Ante REM Medical Ltd | Professional & scientific | 2021 |
| Antony Allen Consulting Limited | Professional & scientific | 2021 |
| Apex Access Group (Environment) Ltd | Construction | 2026 |
| Apex Access Group (Fall Protection) Ltd | Construction | 2026 |
| Apex Access Group (Rope Access) Ltd | Construction | 2026 |
| Apex Plumbing and Heating (Matlock) Ltd | Construction | 2024 |
| Apollo Asset Management Limited | Manufacturing | 2000 |
| Applied Micros Limited | Information & communication | 2004 |
| Aquarius Home Improvements Limited | Construction | 2006 |
| Aquaserve Engineering Limited | Water & waste | 2008 |
| ARC Roofing Supplies Limited | Wholesale & retail | 2018 |
| ARK Engineering & Services Limited | Construction | 2010 |
| Arkad Healthcare Limited | Wholesale & retail | 2017 |
| Arkwright Society Limited(The) | Real estate | 1982 |