| A.D.R Property Group Ltd | Real estate | 2024 |
| A.Dubb Optics Ltd | Health & social care | 2025 |
| A.E Enterprises Limited | Other services | 2010 |
| A.E Locums Ltd | Health & social care | 2015 |
| A.E. Beckett & Sons (Developments) Limited | Administrative & support | 1973 |
| A.E. Beckett & Sons (Espanola) Limited | Professional & scientific | 1965 |
| A.E. Beckett & Sons (Lyndons) Limited | Agriculture & fishing | 1963 |
| A.E. Beckett & Sons (Rose Cottage) Limited | Agriculture & fishing | 1973 |
| A.E. Beckett & Sons Limited | Agriculture & fishing | 1961 |
| A.E. Beckett & Sons(Headley)Limited | Agriculture & fishing | 1965 |
| A.E.Beckett and Sons(Rumbush)Limited | Agriculture & fishing | 1970 |
| A.E.S. (Birmingham) Limited | Manufacturing | 1986 |
| A.F.A. UK Properties Limited | Real estate | 2021 |
| A.F.C.N Limited | Wholesale & retail | 2016 |
| A.F.White Limited | Manufacturing | 1963 |
| A.G Firestopping Limited | Construction | 2023 |
| A.G Minimarket Ltd | Wholesale & retail | 2023 |
| A.G. Allen & Co. (1931) Limited | Wholesale & retail | 1982 |
| A.G. Clothing Limited | Wholesale & retail | 1968 |
| A.G. Property Buyers Limited | Real estate | 2019 |
| A.G.A.Hear Limited | Households | 2026 |
| A.Gio Lettings Limited | Real estate | 2024 |
| A.H. Field (Developers) Limited | Construction | 1953 |
| A.H. Telecom Ltd | Wholesale & retail | 2018 |
| A.H.Adams & Sons Limited | Professional & scientific | 1952 |
| A.H.Field(Holdings)Limited | Real estate | 1959 |
| A.H.Field(Overseas Investments)Limited | Professional & scientific | 1969 |
| A.I Drive Ltd | Wholesale & retail | 2019 |
| A.I.O.Trading Co.(Uk) Limited | Wholesale & retail | 2013 |
| A.J. Capewell Properties Limited | Administrative & support | 1997 |
| A.J. Connor Properties Ltd | Real estate | 2025 |
| A.Jacob Ltd | Administrative & support | 2021 |
| A.K Corporations Ltd | Real estate | 2021 |
| A.K. 24/7 Recovery Ltd | Water & waste | 2015 |
| A.K. Halal Meats Limited | Wholesale & retail | 2016 |
| A.K. Motors Limited | Wholesale & retail | 2009 |
| A.L. Print Limited | Manufacturing | 2020 |
| A.L.M.A Razaq Ltd | Manufacturing | 2022 |
| A.L.S Trade Ltd | Wholesale & retail | 2018 |
| A.M Housing Services Ltd | Real estate | 2023 |
| A.M Managment Ltd | Construction | 2024 |
| A.M Transport Solutions Ltd | Transport & logistics | 2025 |
| A.M.C+ Ltd | Manufacturing | 2013 |
| A.M.F Wheel Specialist Ltd | Wholesale & retail | 2025 |
| A.M.G.K. Investments Ltd. | Hospitality | 2002 |
| A.M.M.E. Limited | Manufacturing | 1981 |
| A.M.N Autos Ltd | Wholesale & retail | 2025 |
| A.M.S. (Access Mortgage Solutions) Limited | Financial services | 2013 |
| A.M.S. Healthcare Limited | Wholesale & retail | 2013 |
| A.N. Holdings Limited | Real estate | 2020 |
| A.N.A Deliveries Ltd | Transport & logistics | 2025 |
| A.N.D. Energy Limited | Professional & scientific | 2010 |
| A.N.G Refrigeration S.R.K Limited | Manufacturing | 2017 |
| A.N.R Heating and Plumbing Ltd | Construction | 2023 |
| A.N.S Quality Cars Ltd | Wholesale & retail | 2026 |
| A.NEXGEN786 Ltd | Construction | 2024 |
| A.P. Metalcraft Limited | Arts & recreation | 1938 |
| A.R Auto Techs UK Ltd. | Wholesale & retail | 2017 |
| A.R Mini Market 24/7 Ltd | Wholesale & retail | 2025 |
| A.R. Pway Solutions Ltd | Administrative & support | 2015 |
| A.R. Suleman Ltd | Professional & scientific | 2004 |
| A.R. Welding Services Limited | Manufacturing | 2020 |
| A.R.A Logistic Services Ltd | Transport & logistics | 2026 |
| A.R.B. Holdings Limited | Professional & scientific | 1982 |
| A.R.M Medical Consultancy Ltd | Health & social care | 2023 |
| A.R.M Robotics Ltd | Professional & scientific | 2014 |
| A.R.N. Projects Limited | Health & social care | 2020 |
| A.R.R.T Homes Ltd | Hospitality | 2024 |
| A.R.T Decorating Service Ltd | Construction | 2025 |
| A.R.T School of Motoring Ltd | Wholesale & retail | 2015 |
| A.S (143) Properties Limited | Real estate | 2003 |
| A.S Investment Property Ltd | Construction | 2024 |
| A.S Manak Roofing Ltd | Construction | 2017 |
| A.S Rapid Couriers Ltd | Transport & logistics | 2026 |
| A.S. Contracts Limited | Construction | 1993 |
| A.S. Investment Group Ltd | Real estate | 2019 |
| A.S. Kooner Limited | Real estate | 2006 |
| A.S. Medident Ltd | Health & social care | 2023 |
| A.S.A Birmingham Ltd | Construction | 2021 |
| A.S.A Distribution Midlands Ltd | Wholesale & retail | 2020 |
| A.S.H.I.Ds Ltd | Real estate | 2025 |
| A.S.J Haulage Ltd | Transport & logistics | 2011 |
| A.S.K. & Co. Ltd | Professional & scientific | 2011 |
| A.S.Kalsi & Co. Limited | Extraterritorial | 2004 |
| A.S.Lally Ltd | Construction | 2021 |
| A.S.P Cladding Ltd | Construction | 2021 |
| A.S.P.I. Helping Hands CIC | Arts & recreation | 2025 |
| A.S.R.Z Ltd | Real estate | 2021 |
| A.S.S Consultancy Ltd | Health & social care | 2024 |
| A.S.S Developments Limited | Financial services | 2022 |
| A.Sagaaf Recycling and Resources Ltd | Manufacturing | 2026 |
| A.Sall Estates Limited | Real estate | 2025 |
| A.T. Decorating Limited | Construction | 2003 |
| A.T. Harrison Limited | Professional & scientific | 1996 |
| A.T.A. Partitions Limited | Construction | 2002 |
| A.U Globals Limited | Wholesale & retail | 2025 |
| A.U.H. Property Management Ltd | Professional & scientific | 2015 |
| A.W. Plant Hire Ltd | Administrative & support | 2002 |
| A.W. Smith & Sons (Sundries) Limited | Extraterritorial | 1984 |
| A.W.A DC Ltd | Hospitality | 2025 |