| Alan Stephens Associates Limited | Professional & scientific | 1988 |
| Alan Tyler Limited | Health & social care | 2010 |
| Alan Ward Transport Limited | Transport & logistics | 1998 |
| Aland Builders Ltd | Construction | 2022 |
| Alandolus Tarding Limited | Other services | 2018 |
| Alans Transport Ltd | Transport & logistics | 2022 |
| Alante Building Services Ltd | Construction | 2018 |
| ALAQSAHALAL786 Ltd | Wholesale & retail | 2024 |
| Alarabia Store Ltd | Wholesale & retail | 2025 |
| Alaraby Butchers Ltd | Wholesale & retail | 2025 |
| Alaraby Grocery Limited | Wholesale & retail | 2025 |
| Alarm Key Services Ltd | Administrative & support | 2025 |
| Alarm Servicing & Maintenance Limited | Administrative & support | 2003 |
| Alasdi Ltd | Wholesale & retail | 2019 |
| Alaska Engineering Ltd | Extraterritorial | 2016 |
| Alawin Property Services Ltd | Real estate | 2006 |
| Alayal.Zone Ltd | Wholesale & retail | 2026 |
| Alayhil Explorers CIC | Education | 2025 |
| Alayhill Ltd | Wholesale & retail | 2019 |
| Alayla Ltd | Hospitality | 2022 |
| Alayna Catering Ltd | Hospitality | 2025 |
| Alayna Tech Ltd | Professional & scientific | 2021 |
| ALB Market Ltd | Wholesale & retail | 2023 |
| ALB Productions Ltd | Information & communication | 2023 |
| ALB Transport Ltd | Transport & logistics | 2023 |
| Albaatros Limited | Information & communication | 2023 |
| Albadar Ventures Ltd | Real estate | 2022 |
| Albadawi Ltd | Other services | 2021 |
| Albak Construction Ltd | Construction | 2023 |
| Albak Properties Ltd | Real estate | 2025 |
| Alban House (Hereford) Limited | Construction | 2017 |
| Albany Automotive Ltd | Wholesale & retail | 2012 |
| Albany Gardens Management Company Limited | Real estate | 1987 |
| Albaraka (Birmingham) Ltd | Wholesale & retail | 2013 |
| Albaraka Properties Ltd | Real estate | 2023 |
| Albarik Ltd | Wholesale & retail | 2026 |
| Albatross Civil Engineering Ltd | Construction | 2025 |
| Albatross Engineering Group Ltd | Administrative & support | 2025 |
| Albatross Engineering Ltd | Construction | 2019 |
| Albatross Engineering WM Ltd | Real estate | 2020 |
| Albatross Homes Limited | Real estate | 2018 |
| Albatross Technologies Limited | Information & communication | 2024 |
| Albela Balti Limited | Hospitality | 2024 |
| Albela Enterprise Ltd | Hospitality | 2023 |
| Albemarle Lithium UK Limited | Financial services | 2021 |
| Albena's Trans Ltd | Transport & logistics | 2024 |
| Albergas Fabrications Ltd | Manufacturing | 2012 |
| Albert OVI Ltd | Construction | 2020 |
| Albertos Coffeeshoop and Bar Ltd | Hospitality | 2023 |
| Albhelpuk Limited | Administrative & support | 2025 |
| Albion Advisory Ltd | Financial services | 2024 |
| Albion Compliance Limited | Manufacturing | 2021 |
| Albion Court (Birmingham) Management Company Limited | Households | 2002 |
| Albion Imports Limited | Wholesale & retail | 2025 |
| Albion Place Bham Ltd | Real estate | 2025 |
| Albion Roofing Ltd | Construction | 2024 |
| Albion Square Commercial Management Limited | Real estate | 2003 |
| Albion Square Management Company Limited | Households | 2002 |
| Albion Training Limited | Education | 2021 |
| Albohair Limited | Wholesale & retail | 2017 |
| Albota Ltd | Transport & logistics | 2024 |
| Albucasis Ltd | Information & communication | 2022 |
| Alburaq Cargo Ltd. | Transport & logistics | 2017 |
| ALC Corp Ltd | Administrative & support | 2026 |
| Alcazar Alha Ltd | Real estate | 2022 |
| Alcazar Recruitment Ltd | Administrative & support | 2025 |
| Alcester Barber Shop Limited | Other services | 2016 |
| Alcester Capricorn | Professional & scientific | 1960 |
| Alcester Convenience Store Ltd | Wholesale & retail | 2025 |
| Alcester Developments Limited | Construction | 2026 |
| Alcester EP1 Limited | Professional & scientific | 2000 |
| Alcester Limited | Real estate | 2024 |
| Alcester News & Booze Ltd | Wholesale & retail | 2005 |
| Alcester Number 1 Limited | Professional & scientific | 1915 |
| Alcester Road Investments Ltd | Real estate | 2020 |
| Alcester Road Mini Market Ltd | Wholesale & retail | 2019 |
| Alchemist Corp Ltd | Information & communication | 2022 |
| Alchemy Housing Limited | Real estate | 2022 |
| Alchemy Medical Ltd | Health & social care | 2022 |
| Alchemy Property Group Limited | Real estate | 2021 |
| Alco Consultants Limited | Wholesale & retail | 2001 |
| Alco Plastering & Building Services Ltd | Construction | 2025 |
| Alco Properties Ltd | Real estate | 2005 |
| Alcon Limited | Professional & scientific | 2001 |
| Alcon Transport Limited | Transport & logistics | 2017 |
| Alcora Warren Developments Limited | Real estate | 2002 |
| Alcott Grove Management Company Limited | Households | 2006 |
| Alcyara Ltd | Information & communication | 2025 |
| ALD Builders Limited | Construction | 2021 |
| Aldabra Partners LP | | 2022 |
| Aldair Limited | Real estate | 2006 |
| Aldeeb Auto Ltd | Wholesale & retail | 2021 |
| Aldenmat Limited | Health & social care | 2010 |
| Alder & Willow Ltd | Real estate | 2025 |
| Alder Miles Druce Limited | Extraterritorial | 1947 |
| Alder Property Group Limited | Administrative & support | 2026 |
| Alderbrook Capital Limited | Real estate | 2024 |
| Alderbrook Financial Services Limited | Financial services | 2013 |
| Alderbrook Properties (Birmingham) Limited | Construction | 1951 |
| Alderhithe Gates Ltd | Households | 2022 |