| 11 Kilkie Street Limited | Extraterritorial | 2010 |
| 11:11 Massage Therapy Ltd | Other services | 2025 |
| 127 High Street Flats Limited | Real estate | 2011 |
| 14 Granville Gardens Limited | Households | 2019 |
| 14-18 the Parade Limited | Construction | 2026 |
| 1650 Solutions Ltd | Professional & scientific | 2026 |
| 176 PGT Management Co Ltd | Households | 2016 |
| 1ST Choice Brickwork Limited | Construction | 2015 |
| 20 Old Bethnal Green Road RTM Company Ltd | Households | 2019 |
| 2G Recruitment Ltd | Administrative & support | 2002 |
| 2XS Limited | Other services | 2004 |
| 360AG Limited | Information & communication | 2026 |
| 37 MKM Ltd | Construction | 2005 |
| 4 Corners Assurance Ltd | Information & communication | 2022 |
| 47 Bravington Road Limited | Real estate | 2006 |
| 4XTRAHANDS Limited | Administrative & support | 2001 |
| 7T7 Building Limited | Construction | 2017 |
| 8AG Ltd | Professional & scientific | 2021 |
| A & M Group Ventures Ltd | Financial services | 2024 |
| A Barlow Bookkeeping Limited | Professional & scientific | 2008 |
| A C E Marquetry Limited | Manufacturing | 2010 |
| A C Fitton & Co Limited | Professional & scientific | 1986 |
| A G Automation Limited | Manufacturing | 2014 |
| A J Animal Feeds Ltd | Manufacturing | 2013 |
| A Little Social Ltd | Administrative & support | 2023 |
| A Marshall Consultancy Limited | Administrative & support | 2019 |
| A N Carpentry Limited | Construction | 2019 |
| A NOD to the Past Ltd | Wholesale & retail | 2025 |
| A T S S Limited | Professional & scientific | 2005 |
| A&M Buy to LET Ltd | Real estate | 2017 |
| A&S Roofing Ltd | Construction | 2012 |
| A.B.U. Motor Company Limited | Wholesale & retail | 2011 |
| A.D. Draughting Limited | Professional & scientific | 2016 |
| A4 Drivecare Limited | Construction | 2003 |
| Aasha Psychology Ltd | Health & social care | 2022 |
| About Wellbeing Ltd | Education | 2022 |
| Absolute Health Ltd | Health & social care | 2018 |
| Academy Engineering Limited | Manufacturing | 1999 |
| ACL Electrical Marlborough Ltd | Construction | 2023 |
| Acla Limited | Professional & scientific | 2009 |
| Actio Advisors Ltd | Financial services | 2020 |
| Active Asset Management Limited | Financial services | 2014 |
| Ad-Venture Media Ltd. | Professional & scientific | 2000 |
| Additus Limited | Information & communication | 2024 |
| ADJ Trading Limited | Wholesale & retail | 2018 |
| Adway Associates Limited | Administrative & support | 1995 |
| AEGIS1 Holdings Ltd | Professional & scientific | 2025 |
| Aeromedical Training Limited | Health & social care | 2012 |
| Agricruit Ltd | Other services | 2023 |
| Agrippa Technology Limited | Professional & scientific | 2015 |
| Ahmed & Begum Ltd | Real estate | 2025 |
| AI Optimise Limited | Information & communication | 2025 |
| AI Synergy Ltd | Professional & scientific | 2025 |
| AI Transformation Services Ltd | Information & communication | 2025 |
| Ailesbury Court Ltd | Real estate | 2021 |
| Ajwc Tech Consulting Ltd | Information & communication | 2025 |
| AKA Maintenance Solution Ltd | Construction | 2021 |
| AL Financial Ltd | Professional & scientific | 2026 |
| Alan Mumby Limited | Professional & scientific | 2018 |
| Albion Technology Limited | Information & communication | 1995 |
| Aldbourne Nursing Home Limited | Health & social care | 2000 |
| Aldbourne Taxis Limited | Transport & logistics | 2011 |
| Alice Rose Creative Ltd | Education | 2020 |
| ALL Property Services Limited | Construction | 2001 |
| Allenton Geopolitics Limited | Information & communication | 2022 |
| Allergypath Ltd. | Information & communication | 2025 |
| Allied Peak Limited | Professional & scientific | 2020 |
| Allin Well Ltd | Health & social care | 2025 |
| Alpha Grain Limited | Real estate | 2009 |
| Alphameta Ltd | Information & communication | 2009 |
| Altamirano Properties Ltd | Real estate | 2025 |
| Alverton Software Limited | Information & communication | 2006 |
| Always 3 Ltd | Professional & scientific | 2014 |
| Am-Solutions (Engineering) Limited | Professional & scientific | 2018 |
| Amanda Marsh Physiotherapy Ltd | Other services | 2024 |
| Amazonian Health & Fitness Limited | Arts & recreation | 2019 |
| Ameliorate Networks Ltd | Information & communication | 2023 |
| AMH Jones Orthopaedics Ltd | Health & social care | 2019 |
| AMO Developments Limited | Construction | 2005 |
| AMY Levin Limited | Hospitality | 2014 |
| AND That's HOW YOU Ltd | Information & communication | 2023 |
| Anderson Wealth Management Ltd | Financial services | 2012 |
| Andrew Martin Consultants Limited | Professional & scientific | 2010 |
| Andrew Robson Bridge Online Ltd | Wholesale & retail | 2020 |
| Angel 10 Tornado Limited | Professional & scientific | 2015 |
| Anthony Parkinson Photography Limited | Professional & scientific | 2014 |
| Anthony Ralph Ltd | Wholesale & retail | 2014 |
| APD Carpentry & Property Services Ltd | Manufacturing | 2024 |
| Apdi Ltd | Construction | 2024 |
| Apex Story Labs Ltd | Information & communication | 2026 |
| Appletree Homes (Avebury) Ltd | Real estate | 2023 |
| Arcaircrew Ltd | Transport & logistics | 2019 |
| Archa Tomas Ltd | Wholesale & retail | 2025 |
| Archer Property Holdings Limited | Real estate | 2019 |
| Ardor Development Limited | Construction | 2022 |
| Argen Housing Limited | Real estate | 2010 |
| Arlington Liquid Solutions Limited | Administrative & support | 2011 |
| Arnott Associates Limited | Professional & scientific | 2006 |
| Artio Consultancy Ltd | Arts & recreation | 2024 |
| Arven Security Ltd | Information & communication | 2023 |