| A.F. Lifeskills Ltd | Professional & scientific | 2023 |
| A.F. Schofield Roofing & Building Limited | Construction | 2000 |
| A.F. Wilson Property Ltd | Real estate | 2025 |
| A.F.A.R. Construction Services Limited | Construction | 2007 |
| A.F.Browne Limited | Wholesale & retail | 1962 |
| A.F.O.Int Ltd | Wholesale & retail | 2025 |
| A.F.Parker Consulting Ltd | Professional & scientific | 2024 |
| A.F.S.N Services Ltd | Health & social care | 2022 |
| A.Farkot Limited | Wholesale & retail | 2024 |
| A.Feki Ltd | Information & communication | 2016 |
| A.Fernandez Ltd | Construction | 2021 |
| A.G & G.G Property Ltd | Real estate | 2023 |
| A.G Batiment Ltd | Financial services | 2018 |
| A.G Foundation Ltd | Health & social care | 2021 |
| A.G Grey Consulting Ltd | Construction | 2017 |
| A.G Hardwood Flooring Limited | Construction | 2014 |
| A.G Philips UK Ltd | Other services | 2011 |
| A.G Protection Ltd | Administrative & support | 2023 |
| A.G Yachting Limited | Administrative & support | 2024 |
| A.G. African Food Stores Limited | Wholesale & retail | 2022 |
| A.G. Berger Limited | Professional & scientific | 2024 |
| A.G. Film Fashion Limited | Information & communication | 2000 |
| A.G. International Renovations Ltd | Construction | 2022 |
| A.G. Mark Investments Limited | Other services | 2021 |
| A.G. Premium Construction Ltd | Real estate | 2022 |
| A.G. Registrars Limited | Professional & scientific | 1988 |
| A.G. RUS Transport Ltd | Transport & logistics | 2022 |
| A.G. Securities | Real estate | 1969 |
| A.G. Social Care Limited | Hospitality | 2006 |
| A.G. Stage Ltd | Information & communication | 2023 |
| A.G. Strategic Partners Ltd | Information & communication | 2026 |
| A.G. Thames Investments Limited | Financial services | 2019 |
| A.G. Titan Construction Ltd | Construction | 2025 |
| A.G.A Renovations Ltd | Construction | 2017 |
| A.G.A.Joinery Ltd | Manufacturing | 2016 |
| A.G.C Fashion Ltd | Manufacturing | 2018 |
| A.G.C.A. Projects Ltd | Construction | 2024 |
| A.G.D Builders Limited | Construction | 2020 |
| A.G.E Construction Ltd | Construction | 2018 |
| A.G.E. & Co. Company Limited | Hospitality | 2021 |
| A.G.H Ventures Limited | Real estate | 2019 |
| A.G.M Building Constructions Ltd | Construction | 2020 |
| A.G.M. (2017) Limited | Administrative & support | 2017 |
| A.G.M. Hotels Limited | Hospitality | 1994 |
| A.G.Mc Ltd | Professional & scientific | 2022 |
| A.G.P. Limited | Real estate | 1956 |
| A.G.R Heritage Limited | Real estate | 2025 |
| A.G.S Castings Ltd | Administrative & support | 2015 |
| A.Gul Ltd | Wholesale & retail | 2025 |
| A.H Accountancy Ltd | Professional & scientific | 2014 |
| A.H Baldwin & Sons Limited | Extraterritorial | 2025 |
| A.H Electrics Limited | Construction | 2018 |
| A.H Gardens Ltd | Construction | 2018 |
| A.H Recruitment Limited | Administrative & support | 2026 |
| A.H Worldwide Marketing Ltd | Other services | 2022 |
| A.H. (Zimbabwe) Limited | Extraterritorial | 1935 |
| A.H. Construction Solutions Group Limited | Financial services | 2021 |
| A.H. Homes Global Ltd | Professional & scientific | 2025 |
| A.H. Mirza Limited | Real estate | 2021 |
| A.H. North London Limited | Professional & scientific | 2000 |
| A.H. Properties Ltd | Real estate | 2000 |
| A.H. Trading (Europe) Limited | Wholesale & retail | 2013 |
| A.H.Cox(Billingsgate)Limited | Wholesale & retail | 1955 |
| A.H.Lleshi Properties Ltd | Real estate | 2023 |
| A.H.P. Medical Supplies Ltd | Wholesale & retail | 2001 |
| A.H.S. Chauffeurs Limited | Transport & logistics | 2007 |
| A.Hassan Essentials Ltd | Wholesale & retail | 2024 |
| A.Hoelzle Consulting & Investments Limited | Real estate | 2023 |
| A.Hollur & Sons Ltd | Manufacturing | 2018 |
| A.I Robotics Ltd | Information & communication | 2020 |
| A.I Software Integration Limited | Information & communication | 2021 |
| A.I. Assets Limited | Financial services | 2016 |
| A.I. Care Services Ltd | Health & social care | 2016 |
| A.I. EST 1989 Limited | Wholesale & retail | 2019 |
| A.I. Giurgea Limited | Professional & scientific | 2019 |
| A.I. Parties Ltd | Wholesale & retail | 2024 |
| A.I. PR Ltd | Professional & scientific | 2011 |
| A.I. Reports Ltd | Information & communication | 2025 |
| A.I. Strategy Ltd | Financial services | 2025 |
| A.I. Tax Consulting Ltd | Professional & scientific | 2024 |
| A.I. Technology Systems Ltd | Other services | 2021 |
| A.I.A Consulting Ltd | Professional & scientific | 2014 |
| A.I.Accountax Ltd | Professional & scientific | 2011 |
| A.I.B.Nominees Limited | Financial services | 1960 |
| A.I.B.Trustees Limited | Professional & scientific | 1963 |
| A.I.Cold Ltd | Information & communication | 2025 |
| A.I.D Consultancy Limited | Professional & scientific | 2009 |
| A.I.D Expert Ltd | Administrative & support | 2020 |
| A.I.D. Fitters Limited | Construction | 2010 |
| A.I.E.S.E.C. (U.K.) Limited | Education | 1975 |
| A.I.Film Production Limited | Information & communication | 2013 |
| A.I.J Property Limited | Financial services | 2015 |
| A.I.K. Agricultural International LLP | | 2016 |
| A.I.M Property Improvements Ltd | Construction | 2020 |
| A.I.M. | | 1997 |
| A.I.M. High Project CIC | Health & social care | 2017 |
| A.I.M.(Care) Limited | Health & social care | 2009 |
| A.I.O.N. (Artificial Intelligence Off-Line Network) Ltd. | Extraterritorial | 2026 |
| A.I.R Edel Associates Limited | Information & communication | 1970 |
| A.I.R.-Edel Recording Studios Limited | Information & communication | 1952 |