| A.I.S Laundry Ltd | Other services | 2026 |
| A.I.S Solutions Ltd | Professional & scientific | 2021 |
| A.In.T Holding Limited | Administrative & support | 2023 |
| A.Instincts Limited | Manufacturing | 2016 |
| A.Iqbal Learning and Training Ltd | Education | 2023 |
| A.Iyala Ltd | Manufacturing | 2023 |
| A.J Aftab Limited | Wholesale & retail | 2025 |
| A.J and Sons Enterprise Ltd | Wholesale & retail | 2025 |
| A.J GAS & Plumbing Services Ltd | Construction | 2024 |
| A.J Gold Consultancy Ltd | Professional & scientific | 2021 |
| A.J Gold Property Management Ltd | Real estate | 2021 |
| A.J Lettings Limited | Real estate | 2022 |
| A.J Plumbing & Drainage Ltd | Water & waste | 2017 |
| A.J-It Support Ltd | Information & communication | 2015 |
| A.J. Betteridge Consultancy Limited | Professional & scientific | 2016 |
| A.J. Distributors (Holdings) Limited | Financial services | 2019 |
| A.J. Distributors (Investment Holdings) Limited | Financial services | 2019 |
| A.J. Distributors (Investments) Limited | Financial services | 2019 |
| A.J. Distributors Limited | Wholesale & retail | 1985 |
| A.J. Durrant Building Construction and Development Limited | Construction | 2012 |
| A.J. Event Services Ltd | Arts & recreation | 2016 |
| A.J. Fairlee Limited | Wholesale & retail | 1986 |
| A.J. Gateway (UK) Limited | Extraterritorial | 2006 |
| A.J. Group Advisory Services Ukeig | | 2017 |
| A.J. Independent Social Work Services Limited | Health & social care | 2025 |
| A.J. Lees Medical Limited | Health & social care | 2010 |
| A.J. Metal Fabrications Limited | Manufacturing | 1987 |
| A.J. Schofield Limited | Professional & scientific | 1925 |
| A.J. Tailor Property Ltd | Real estate | 2026 |
| A.J.A. Wylie Ltd | Real estate | 2024 |
| A.J.Brett & Co.Limited | Manufacturing | 1952 |
| A.J.C Carpentry Ltd | Construction | 2011 |
| A.J.C Retail UK Ltd | Manufacturing | 2026 |
| A.J.Carter Services Ltd | Water & waste | 2025 |
| A.J.D.M Holdings Ltd | Administrative & support | 2024 |
| A.J.Farmer Limited | Wholesale & retail | 1964 |
| A.J.Garnett Limited | Real estate | 1920 |
| A.J.H Sourcing Services Ltd | Real estate | 2025 |
| A.J.J.H. Limited | Administrative & support | 2006 |
| A.J.M. Recycling Centre Limited | Water & waste | 2015 |
| A.J.O Invest Ltd | Construction | 2026 |
| A.J.O Ltd | Transport & logistics | 2024 |
| A.J.O. Fastrack Ltd | Transport & logistics | 2012 |
| A.J.P. Safety Limited | Administrative & support | 2003 |
| A.J.Placement Consultants Private Limited | Administrative & support | 2023 |
| A.J.Qvist Ltd | Extraterritorial | 2023 |
| A.J.Rickman Limited | Wholesale & retail | 2010 |
| A.J.S Building Services Ltd | Construction | 2021 |
| A.J.S.O Limited | Hospitality | 2024 |
| A.J.Saxton Holdings Limited | Financial services | 2026 |
| A.Jerevija Construction Ltd | Construction | 2025 |
| A.JF2 Profits Limited | Health & social care | 2014 |
| A.K Barber London Ltd | Other services | 2026 |
| A.K Glow Ltd | Wholesale & retail | 2025 |
| A.K Nakhoda Ltd | Wholesale & retail | 2024 |
| A.K. Ayurvedics Ltd | Wholesale & retail | 2025 |
| A.K. Bureau Ltd. | Professional & scientific | 2011 |
| A.K.C. Properties Ltd | Households | 2007 |
| A.K.D. Consultancy Services Ltd | Professional & scientific | 2017 |
| A.K.E Properties Ltd | Real estate | 2026 |
| A.K.E Sports Management Limited | Arts & recreation | 2018 |
| A.K.K Builders (UK) Ltd | Construction | 2018 |
| A.K.Larsen Management Consulting Ltd. | Professional & scientific | 2016 |
| A.K.S Estates Ltd | Real estate | 2023 |
| A.K.S Online Consultancy Ltd | Information & communication | 2024 |
| A.K.Systech Ltd | Information & communication | 2025 |
| A.Kaberg KYL OCH Svetsservice Limited | Extraterritorial | 2015 |
| A.Kainth Holdings Limited | Administrative & support | 2018 |
| A.Keller & Sons(Hydraulics)Limited | Manufacturing | 1962 |
| A.Koukla's Limited | Construction | 2024 |
| A.L Autos Limited | Wholesale & retail | 2025 |
| A.L Evergreen Ltd | Construction | 2019 |
| A.L Healthcare Limited | Administrative & support | 2014 |
| A.L Jewellery Solutions (UK) Limited | Wholesale & retail | 2010 |
| A.L Maintenance Limited | Construction | 2025 |
| A.L Projects Ltd | Administrative & support | 2023 |
| A.L. & I.D. FOX Limited | Wholesale & retail | 1959 |
| A.L. Ashway Limited | Financial services | 1948 |
| A.L. Contracts Italia Ltd | Construction | 2017 |
| A.L. Enterprises Ltd | Financial services | 1993 |
| A.L. Media Ltd | Information & communication | 2015 |
| A.L. Property Group Limited | Real estate | 2018 |
| A.L. Property Services Ltd | Real estate | 2021 |
| A.L. Signature Event Management Ltd | Professional & scientific | 2021 |
| A.L.A.Q Limited | Professional & scientific | 2024 |
| A.L.B. Services Ltd | Other services | 2015 |
| A.L.C. Mixology Limited | Other services | 2024 |
| A.L.Christophers and Sons Limited | Wholesale & retail | 2019 |
| A.L.Coffee.Roasters Ltd | Wholesale & retail | 2022 |
| A.L.Davies Limited | Construction | 1963 |
| A.L.E Locksmiths Ltd | Other services | 2018 |
| A.L.E. Selective Logistics Limited | Transport & logistics | 2024 |
| A.L.G Fashion Ltd | Professional & scientific | 2019 |
| A.L.H. 86 Limited | Financial services | 1986 |
| A.L.I.G.N. 360 Limited | Other services | 2024 |
| A.L.I.H.(Farms) Limited | Real estate | 1974 |
| A.L.L.C Ltd | Construction | 2025 |
| A.L.M.C Ltd | Manufacturing | 2024 |
| A.L.N. Carpentry & Joinery Ltd | Construction | 2012 |
| A.L.O. Physiotherapy Clinic Ltd | Health & social care | 2004 |