| 03645227 Limited | Extraterritorial | 1998 |
| 03668709 Limited | Extraterritorial | 1998 |
| 04776217 Limited | Extraterritorial | 2003 |
| 05765389 Limited | Extraterritorial | 2006 |
| 06673324 Limited | Extraterritorial | 2008 |
| 10999776 Limited | Extraterritorial | 2017 |
| 11929306 Limited | Extraterritorial | 2019 |
| 1ST Call Plumbing & Heating Ltd | Construction | 2025 |
| 1ST DIG Plant Hire & Construction Ltd | Construction | 2026 |
| 2 Cool AC Services Ltd | Energy | 2021 |
| 20 James Road Tyseley Management Company Limited | Real estate | 1988 |
| 2020 Nail Limited | Other services | 2020 |
| 2T Asset Management Limited | Information & communication | 2020 |
| 3D Moto Limited | Wholesale & retail | 2003 |
| 3SIXTY Estimating Services Ltd | Professional & scientific | 2010 |
| 4R One J Limited | Health & social care | 2021 |
| 84 Greenacres Ltd | Construction | 2024 |
| 842 Investments | Financial services | 2024 |
| 9INEBRANDS Limited | Wholesale & retail | 2025 |
| A & C Ductwork Ltd | Construction | 2003 |
| A & F Pharma Limited | Wholesale & retail | 2019 |
| A & R Cladding Limited | Construction | 2021 |
| A & S Structures Limited | Extraterritorial | 2011 |
| A a Rewinds Limited | Manufacturing | 2010 |
| A B Steel Structures Ltd | Construction | 2019 |
| A C Contracts (Codsall) Ltd | Construction | 2011 |
| A Cuts Barber Ltd | Other services | 2025 |
| A Cuts Ltd | Other services | 2026 |
| A D Vehicle Services Ltd | Wholesale & retail | 2011 |
| A S Building Contractors Ltd | Construction | 2005 |
| A Simple Solution Limited | Professional & scientific | 2002 |
| A&D Autocare Limited | Wholesale & retail | 2025 |
| A&D Holdings Group Ltd | Administrative & support | 2024 |
| A. R. Rudge Limited | Manufacturing | 1960 |
| A. T. Sheds & Fencing Limited | Manufacturing | 2009 |
| A.B. FAN Properties Limited | Real estate | 2016 |
| A.C.E Heating and Plumbing WM Ltd | Construction | 2014 |
| A.C.Guy - Building Envelope Solutions Limited | Professional & scientific | 2014 |
| A.C.Guy Glazing Design Limited | Professional & scientific | 2025 |
| A.I. Management Peterborough Ltd | Professional & scientific | 2018 |
| A.K. International (Imports & Exports) Limited | Wholesale & retail | 1993 |
| A.K. Rides Limited | Administrative & support | 2014 |
| A.R.K.S. Tool Hire Limited | Administrative & support | 1986 |
| A.S.A. Installations Limited | Construction | 1998 |
| A.T. Sheds & Fencing (Holdings) Limited | Financial services | 2023 |
| A.Taylor Agri Ltd | Manufacturing | 2026 |
| A1 Lifts Limited | Extraterritorial | 2026 |
| A1 Subco Limited | Manufacturing | 2006 |
| Aamp Armour Group Limited | Manufacturing | 2014 |
| Aamp Global Limited | Manufacturing | 1990 |
| AAR Motors Limited | Manufacturing | 2010 |
| AAR Powerdrives Limited | Manufacturing | 2007 |
| Abacus Elevators Limited | Extraterritorial | 2026 |
| Abacus WS Holding Company Limited | Professional & scientific | 2018 |
| Abbsb Limited | Professional & scientific | 2012 |
| Abodeco Group Holdings Limited | Real estate | 2016 |
| Above ALL Noise Limited | Professional & scientific | 2023 |
| Absolute Racking Inspections Limited | Professional & scientific | 2018 |
| Academy Homecare Services Limited | Health & social care | 2007 |
| ACB Building Services Ltd | Construction | 2026 |
| Accelerated Sovereignty Ltd | Wholesale & retail | 2022 |
| Accelerator Holdings Limited | Administrative & support | 2023 |
| Accent Signs Distribution Limited | Professional & scientific | 2009 |
| Access to Work Wellbeing Ltd | Other services | 2024 |
| Accord Steel Cladding Limited | Wholesale & retail | 2008 |
| Accsb Holdings Limited | Professional & scientific | 2025 |
| Accsb Investments Limited | Professional & scientific | 2025 |
| Accufix Elite Ltd | Administrative & support | 2020 |
| Accurate Section Benders Holdings Limited | Financial services | 2025 |
| Accurate Section Benders Limited | Manufacturing | 1990 |
| Ace Coaching Limited | Education | 2009 |
| Ace Fasteners Limited | Wholesale & retail | 1983 |
| Ace of Fades Barbers Kurd Ltd | Other services | 2023 |
| Ackerman Properties Limited | Construction | 2026 |
| Acmi Properties Ltd | Real estate | 2025 |
| Acology Life Sciences Limited | Professional & scientific | 2008 |
| AD Storage Ltd | Transport & logistics | 2022 |
| Adaptive Living Solutions Ltd | Construction | 2024 |
| Advanced Accountancy (Midlands) Limited | Professional & scientific | 2011 |
| Advanced Accountancy Services Ltd | Extraterritorial | 2012 |
| Advanced AV Solutions Ltd | Wholesale & retail | 2019 |
| Advancing Optics Ltd | Information & communication | 2023 |
| ADW Consultancy Ltd | Professional & scientific | 2025 |
| AEL Subco Limited | Manufacturing | 2010 |
| Aelius Realm Ltd | Other services | 2022 |
| Aerauliqa (UK) Limited | Manufacturing | 2011 |
| Aeroforge UK Limited | Professional & scientific | 2024 |
| Aestheticlinic Limited | Other services | 2022 |
| Affordable Windows Doors & Conservatories Ltd | Construction | 2011 |
| AG Legal Limited | Professional & scientific | 2026 |
| Agency Supplies Ltd | Other services | 2017 |
| Aggresolve Ltd | Wholesale & retail | 2021 |
| AGM1 Engineering Ltd | Manufacturing | 2013 |
| AGS Assets Ltd | Real estate | 2020 |
| AI Chats Limited | Information & communication | 2023 |
| AIM Pharma Limited | Wholesale & retail | 2025 |
| Ainsworth Street Limited | Real estate | 2021 |
| Air Seating (Holdings) Limited | Manufacturing | 2015 |
| Air Seating Group Limited | Financial services | 2023 |
| Air Seating Limited | Manufacturing | 2007 |