| 00068275 Limited | Professional & scientific | 1900 |
| 00103598 Limited | Professional & scientific | 1909 |
| 00138397 Limited | Professional & scientific | 1914 |
| 00261074 | Manufacturing | 1931 |
| 00936520 PLC | Professional & scientific | 1968 |
| 02136671 Limited | Professional & scientific | 1987 |
| 06187904 Ltd | Real estate | 2007 |
| 1 Top Choice Ltd | Construction | 2022 |
| 1.2.1 Air Conditioning Limited | Energy | 2004 |
| 121 Anderton Park Road Limited | Real estate | 2002 |
| 137 Newhall Street (Management) Limited | Real estate | 1987 |
| 19TH Century Interiors Limited | Wholesale & retail | 2003 |
| 21ST Century Housing Limited | Real estate | 2002 |
| 21ST Century Music Publishing Limited | Manufacturing | 1999 |
| 279-283 Spies Lane Halesowen Management Company Limited | Real estate | 1997 |
| 30692 (Realisations) Limited | Transport & logistics | 1997 |
| 36 Local Express Limited | Wholesale & retail | 2025 |
| 3D Tool Ltd | Professional & scientific | 2007 |
| 3H Electronic Systems Limited | Manufacturing | 2007 |
| 3MINDS Ltd | Manufacturing | 2003 |
| 3TS Top Tool Trading Company Limited | Professional & scientific | 1999 |
| 4 Leisure Recruitment Ltd. | Administrative & support | 2002 |
| 5 Star Gadgets Ltd Ltd | Wholesale & retail | 2025 |
| 8P.M. Chemist Limited | Wholesale & retail | 1992 |
| A & D Joinery & Interiors Limited | Manufacturing | 1999 |
| A & J Tyre Services Limited | Wholesale & retail | 2005 |
| A & L Contractors Limited | Construction | 2004 |
| A & M Pharmacies Limited | Wholesale & retail | 1999 |
| A & P Enterprise (UK) Limited | Administrative & support | 2003 |
| A & R Vehicle Services Limited | Wholesale & retail | 1988 |
| A & S Butchers Limited | Wholesale & retail | 1999 |
| A & S Optometrics Limited | Health & social care | 2005 |
| A 2 Z-LIMOS4U Limited | Administrative & support | 2001 |
| A C Plan-Build Limited | Construction | 1998 |
| A H Car Wash Ltd | Wholesale & retail | 2019 |
| A J M Roofing & Cladding Limited | Construction | 2003 |
| A J P M S Limited | Professional & scientific | 2000 |
| A J Price Decorators Limited | Construction | 2007 |
| A J Roofing Limited | Construction | 1999 |
| A K Flooring Ltd | Construction | 2002 |
| A M Medical Services Midlands Limited | Health & social care | 2017 |
| A M T Properties Limited | Real estate | 2006 |
| A Nita Print Limited | Professional & scientific | 1992 |
| A S K Property Construction Limited | Construction | 2006 |
| A to Z Exports Limited | Administrative & support | 2004 |
| A V a Engineering Consultancy Ltd. | Manufacturing | 2005 |
| A&J Estates Midlands Ltd | Real estate | 2024 |
| A&L Enablement Services (Care and Support) Limited | Health & social care | 2016 |
| A. and H. Dean and Sons (Builders and Developers) Limited | | 1975 |
| A. Gilligan (Coatings) Ltd | Manufacturing | 2003 |
| A. J. Loach Plant Hire Limited | Administrative & support | 1992 |
| A. Lewis and Sons (Willenhall) Limited | Manufacturing | 1947 |
| A. N. G. Export and Import Limited | Wholesale & retail | 2004 |
| A. Q. (Central) Limited | Manufacturing | 1997 |
| A.B.H. Metals Limited | Water & waste | 2006 |
| A.B.R. (Specialist Welding) Limited | Manufacturing | 1984 |
| A.C. Automobile Limited | Administrative & support | 2004 |
| A.C.Kendrick & SON (Corn) Limited | Real estate | 1934 |
| A.C.Smith Technical Services Ltd | Professional & scientific | 2013 |
| A.E. Hawkins (Haulage Contractors) Limited | Transport & logistics | 1999 |
| A.E. Hawkins (Holdings) Limited | Transport & logistics | 1977 |
| A.E. Hawkins Properties Limited | Real estate | 1986 |
| A.G. Gregory (Properties) Limited | Real estate | 1985 |
| A.J. Cook & SON Limited | Other services | 2003 |
| A.J. Long Limited | Construction | 2003 |
| A.J.L. Midlands Electrical Services Ltd | Construction | 2006 |
| A.Perry Ltd | Manufacturing | 1940 |
| A.R IT Services Limited | Information & communication | 2007 |
| A.R. Electrical Limited | Construction | 2006 |
| A.R. Tanner (Metals) Limited | Wholesale & retail | 1984 |
| A.S. Rubber & Plastics Limited | Manufacturing | 1995 |
| A.S.C. (Central) Limited | Information & communication | 1990 |
| A1 Express Taxi Limited | Transport & logistics | 2006 |
| A1 Teaching Solutions Limited | Administrative & support | 2006 |
| A1 Tool & Plant Limited | Administrative & support | 1999 |
| AAA AA ALL Areas Maintenance Ltd. | Wholesale & retail | 1999 |
| AAN4 Limited | Professional & scientific | 2024 |
| Abbey Court Commercial Services Limited | Construction | 2007 |
| Abbey Spuncast Limited | Manufacturing | 1984 |
| Abby Wilkes Limited | Professional & scientific | 2006 |
| Abdullah T Cons Ltd | Administrative & support | 2026 |
| Abingdon M.G. Parts Limited | Wholesale & retail | 1987 |
| About Interiors Ltd | Construction | 2003 |
| Abutrab Limited | Information & communication | 2007 |
| Access Design & Safety Ltd | Construction | 2010 |
| Accordia Computing Supplies Ltd | Wholesale & retail | 2004 |
| Accountancy & Business Services (UK) Limited | Professional & scientific | 2003 |
| Accountancy Services & Training (UK) Limited | Professional & scientific | 2007 |
| Accurate Laser Holdings Limited | Manufacturing | 2025 |
| Acme Incorporated Limited | Wholesale & retail | 2008 |
| Acme Metal Spinning & Bedale Limited | Manufacturing | 2005 |
| Acme Spinning Co.(Oldbury)Limited | Manufacturing | 1954 |
| Acre House Property Limited | Real estate | 2026 |
| Acrow Galvanizing Limited | Manufacturing | 1979 |
| Action Planning Limited | Information & communication | 1995 |
| Acton Finishing Limited | Manufacturing | 2002 |
| ADA Builders & Joiners Limited | Construction | 1999 |
| Adams Lubetech Limited | Manufacturing | 1999 |
| Adaptsearch Limited | | 1992 |
| Addport Limited | | 1980 |