| ALG Accounting Limited | Professional & scientific | 2018 |
| Algorithmic Services Limited | Information & communication | 2024 |
| Algotron Tech Ltd | Financial services | 2021 |
| Alh-Shonibare Limited | Construction | 2023 |
| Alhudaa Hajj & Umrah Global Services Limited | Administrative & support | 2018 |
| ALI Couriers Ltd | Transport & logistics | 2019 |
| ALI Hub Ltd | Wholesale & retail | 2025 |
| ALI Investor Ltd | Information & communication | 2021 |
| ALI Stringer Ltd | Manufacturing | 2026 |
| Ali's Treats Ltd | Manufacturing | 2025 |
| Aliant Global Limited | Wholesale & retail | 2025 |
| Alias Hire (London) Ltd | Administrative & support | 2016 |
| Alif Courier Ltd | Administrative & support | 2023 |
| Alif PVT Ltd | Administrative & support | 2021 |
| Align With Lyndsey Consulting Ltd | Administrative & support | 2024 |
| Aligned Admin Ltd | Professional & scientific | 2025 |
| Alikam Cleaning & Care Services Limited | Health & social care | 2025 |
| Alin DUM Services Ltd | Construction | 2026 |
| Alina & Iulian Ltd | Transport & logistics | 2026 |
| Alinadrive Ltd | Transport & logistics | 2026 |
| Alinautomotive Ltd | Wholesale & retail | 2023 |
| Alisd Limited | Other services | 2017 |
| Alisenda Property Ltd | Real estate | 2024 |
| Alisha's Fast Food Ltd | Hospitality | 2026 |
| Alishan Butchers Ltd | Hospitality | 2022 |
| Alistar JTL Care Limited | Real estate | 2023 |
| Alita Medical Services Ltd | Public administration | 2019 |
| Aliyar Transport Limited | Transport & logistics | 2025 |
| Aljazeera Halal Meat Ltd | Wholesale & retail | 2023 |
| Alkarmi Trans Ltd | Transport & logistics | 2020 |
| ALL About Safes Ltd | Other services | 2018 |
| ALL About the Bounce Ltd | Administrative & support | 2026 |
| ALL About Trucks (Geoff Sipson) Limited | Wholesale & retail | 1997 |
| ALL Carer Services Ltd | Transport & logistics | 2023 |
| ALL Couriers UK and Europe Ltd | Transport & logistics | 2019 |
| ALL Day Travel Limited | Transport & logistics | 2022 |
| ALL Dogs Love Ltd | Wholesale & retail | 2018 |
| ALL Electric Future Limited | Construction | 2022 |
| ALL Facades UK Limited | Other services | 2018 |
| ALL Garden Living Ltd | Wholesale & retail | 2020 |
| ALL Nation Travel Agency Ltd | Administrative & support | 2024 |
| ALL Purpose 247 Ltd | Information & communication | 2017 |
| ALL Round GAS Services Limited | Manufacturing | 2007 |
| ALL Round Maintenance Limited | Construction | 2003 |
| ALL Route Logistic Ltd | Transport & logistics | 2022 |
| ALL Saints Church Leamington Ukrainian Cafe C.I.C. | Hospitality | 2022 |
| ALL Seasons Ltd | Administrative & support | 2025 |
| ALL Square Accounting Ltd | Professional & scientific | 2025 |
| ALL Terrain Publishing, Conferences and Training Ltd | Information & communication | 2013 |
| ALL the A'S Wellness Ltd | Other services | 2026 |
| ALL Together Homes Ltd | Real estate | 2024 |
| ALL Together Homes QR Ltd | Real estate | 2025 |
| ALL Together Homes QR2 Limited | Real estate | 2026 |
| ALL Trim Ltd | Manufacturing | 2025 |
| All-Q Limited | Administrative & support | 2022 |
| Allan Howard Motors Ltd | Wholesale & retail | 2016 |
| Allan Pumula Mabonga Limited | Administrative & support | 2014 |
| Allana Healthcare Services Limited | Wholesale & retail | 2023 |
| Allanah Williams Aesthetics Ltd | Other services | 2022 |
| Allbans Ltd | Public administration | 2024 |
| Allbridge Support CIC | Hospitality | 2026 |
| Alleca Limited | Professional & scientific | 2009 |
| Allen Accommodation Ltd | Hospitality | 2024 |
| Allen and James Limited | Health & social care | 2014 |
| Allen Cleaning Services Ltd | Administrative & support | 2024 |
| Allen's Cookies and Cream Ltd | Wholesale & retail | 2025 |
| Allens Windows & Doors Ltd | Manufacturing | 2021 |
| Allesley Auto Centre Ltd | Wholesale & retail | 2025 |
| Allesley Barber Ltd | Other services | 2022 |
| Allesley Childrens Care Ltd | Health & social care | 2018 |
| Allesley Coachbuilders Limited | Manufacturing | 2023 |
| Allesley Park Community Association Ltd | Education | 2003 |
| Allesley Park Evangelical Church | Other services | 2011 |
| Allesley Practice Limited | Health & social care | 2022 |
| Allesley Properties Limited | Construction | 2011 |
| Allesley Village (Birmingham Road) Management Company Ltd | Real estate | 2019 |
| Alleyne Facias Ltd | Construction | 2025 |
| Alleyne Roofing Ltd | Construction | 2020 |
| Allfaden Ltd | Education | 2021 |
| Alliance and Oyster UK Limited | Real estate | 2020 |
| Alliance Classic Motors Ltd | Wholesale & retail | 2013 |
| Alliance for Public Awareness | Information & communication | 2014 |
| Alliance INT Limited | Wholesale & retail | 2024 |
| Alliance of British Watch and Clock Makers Limited | Other services | 2020 |
| Alliance SC Ltd | Administrative & support | 2018 |
| Alliance UK Solutions Limited | Administrative & support | 2018 |
| Alliance.Ik Ltd | Education | 2025 |
| Allied Autos Ltd | Wholesale & retail | 2026 |
| Allied Fincorp Ltd | Financial services | 2012 |
| Allied Fort Ltd | Financial services | 2011 |
| Allied Gold Holdings Limited | Financial services | 2022 |
| Allied Gold Investments Ltd | Financial services | 2024 |
| Allied Gold Limited | Manufacturing | 1985 |
| Allied Midlands Ltd | Wholesale & retail | 2012 |
| Allied Mortgage Services Limited | Financial services | 2016 |
| Allied Motors Limited | Wholesale & retail | 2021 |
| Allied Schools Agency Limited | Education | 1935 |
| Allied Supported Housing Ltd | Extraterritorial | 2016 |
| Allinonehubb Ltd | Wholesale & retail | 2024 |
| Allinx-Tc Limited | Professional & scientific | 2017 |