| 1 Hour a Week Ltd | Administrative & support | 2021 |
| 1500 Supplies Ltd | Wholesale & retail | 2016 |
| 19PLUSDAYSERVICE Community Interest Company | Health & social care | 2021 |
| 1ST Look Roofing Ltd | Construction | 2014 |
| 2/2A Victoria Crescent Company Limited | Households | 2012 |
| 22 Town Street Tea Rooms Ltd | Hospitality | 2025 |
| 24 X 7 (Hertfordshire) Limited | Transport & logistics | 2009 |
| 24 X 7 (Investment) Limited | Administrative & support | 2009 |
| 24 X 7 Ltd. | Transport & logistics | 2001 |
| 24X7 (Buckinghamshire) Limited | Transport & logistics | 2014 |
| 24X7 (Cheshire) Limited | Transport & logistics | 2019 |
| 24X7 (Fleet Services) Limited | Transport & logistics | 2014 |
| 24X7 (Hants) Limited | Transport & logistics | 2015 |
| 24X7 (Lincs) Limited | Transport & logistics | 2016 |
| 24X7 (Northants) Limited | Transport & logistics | 2013 |
| 24X7 (Staffordshire) Limited | Transport & logistics | 2009 |
| 24X7 (Surrey) Limited | Transport & logistics | 2021 |
| 24X7 (Trading) Limited | Transport & logistics | 2019 |
| 24X7 (Warwickshire) Limited | Transport & logistics | 2020 |
| 24X7 (West Sussex) Limited | Transport & logistics | 2015 |
| 24X7 Group Holdings Limited | Financial services | 2020 |
| 24X7 Special Needs Holiday Trading Limited | Administrative & support | 2016 |
| 24X7(NOTTINGHAM) Limited | Transport & logistics | 2020 |
| 24X7(UK) Limited | Transport & logistics | 2020 |
| 25 Recreation Ground Limited | Households | 1988 |
| 27 Hastings Road Residents Company Limited | Real estate | 2010 |
| 27 ST. George's Terrace (Brighton) Limited | Households | 1998 |
| 2D Investments Limited | Real estate | 2014 |
| 30PLUS Mens Fitness Limited | Arts & recreation | 2013 |
| 360 Training Limited | Professional & scientific | 2002 |
| 381 Clothing Co. Limited | Wholesale & retail | 2020 |
| 3D Oak Limited | Wholesale & retail | 2017 |
| 3TEC Ltd | Information & communication | 2012 |
| 5 Counties Contracting Limited | Agriculture & fishing | 2015 |
| 5 Twyford Court (Management) Limited | Real estate | 2018 |
| 515 North Limited | Professional & scientific | 2017 |
| 5M Books Ltd | Information & communication | 2020 |
| 6 Degrees Simulation Ltd | Manufacturing | 2025 |
| 64 Designs Electrical Ltd | Construction | 2014 |
| 65 Roses Trust | Other services | 2012 |
| 720 Performance Limited | Wholesale & retail | 2021 |
| 96 Philbeach Gardens Limited | Real estate | 1978 |
| A & S DRY Cleaning Services Ltd | Other services | 2015 |
| A B Emery Estates Limited | Real estate | 2013 |
| A J Brown Recruitment Services Limited | Professional & scientific | 2007 |
| A J Freeman Aircraft Management Limited | Transport & logistics | 2024 |
| A R Unit Ltd | Information & communication | 2007 |
| A&T Fairclough Ltd | Health & social care | 2024 |
| A.Clarke and Sons Limited | Wholesale & retail | 1961 |
| A.H. Mead & SON (Engineering) Limited | Manufacturing | 1989 |
| A1 Alliance Limited | Arts & recreation | 2022 |
| A1 Environmental Limited | Other services | 2008 |
| A3/A4 Licensed Property Limited | Professional & scientific | 2013 |
| AA FIX Ltd | Construction | 2014 |
| AAB Holidays Limited | Administrative & support | 2021 |
| About Line Developments Ltd | Professional & scientific | 2024 |
| Absol Park Limited | Professional & scientific | 2009 |
| Abundant Care & Recruitment Int'L Ltd | Administrative & support | 2010 |
| Abundant Healthcare Staffing Int'L Ltd | Professional & scientific | 2024 |
| Abuyahya Limited | Wholesale & retail | 2023 |
| ABW Secretarial Limited | Professional & scientific | 2014 |
| AC O2C Consultancy Ltd | Professional & scientific | 2024 |
| Accounting Tim&Co Limited | Professional & scientific | 2016 |
| Ace Acoustics (UK) Limited | Construction | 2002 |
| Ace Carpet Edging Limited | Manufacturing | 2001 |
| Aceituna Foods Limited | Hospitality | 2023 |
| ACS Carpentry Ltd | Manufacturing | 2025 |
| Adeline Glass Creations Ltd | Arts & recreation | 2017 |
| Adema Consulting Limited | Professional & scientific | 2024 |
| Adfinitas Medical Limited | Professional & scientific | 2013 |
| Adrian's Coffee Lounge Ltd | Hospitality | 2026 |
| Adsono Limited | Information & communication | 2004 |
| Advanced Medical and Driving Solutions Limited | Education | 2023 |
| Aeme Fitness Limited | Arts & recreation | 2025 |
| Aeris Technology Ltd | Manufacturing | 2019 |
| Aerospace Warranty Management Limited | Transport & logistics | 2009 |
| Aerospace Warranty Management Trustee Limited | Financial services | 2023 |
| AF Project Management Ltd | Professional & scientific | 2024 |
| Afrizone Technologies Ltd | Information & communication | 2026 |
| AHM OHM Electrical Services Limited | Construction | 2020 |
| AIM High Education Supply UK Ltd | Education | 2023 |
| Air Solutions Group Ltd | Professional & scientific | 2024 |
| Airline Leasing Group Ltd | Administrative & support | 2022 |
| Aiyana Capital Limited | Wholesale & retail | 2021 |
| AJ Medical Group Ltd | Transport & logistics | 2024 |
| AJL Futures Limited | Financial services | 2017 |
| AJS Management Consultants Limited | Professional & scientific | 2011 |
| AK Sandhu UK Ltd | Health & social care | 2025 |
| Al's Auto Repairs Limited | Wholesale & retail | 2016 |
| Alan Draper Automotive Consultants Ltd | Professional & scientific | 2018 |
| Alcogi Holdings Ltd | Real estate | 2024 |
| Alexander Properties Essex & London Limited | Construction | 2023 |
| Alian Skills Limited | Administrative & support | 2016 |
| Alkony Ltd | Transport & logistics | 2015 |
| ALL Essential Group Limited | Wholesale & retail | 2025 |
| ALL Jobs & Property Maintenance Limited | Construction | 2009 |
| ALL Land Services Ltd | Agriculture & fishing | 2018 |
| ALL on Hire Ltd | Water & waste | 2020 |
| ALL Therapy Solutions Ltd | Health & social care | 2019 |
| ALL Weather Access Ltd | Wholesale & retail | 2013 |