| Alistonproperties Ltd | Real estate | 2024 |
| Alitek&M Ltd | Manufacturing | 2023 |
| Alittle-Tea Limited | Hospitality | 2018 |
| Alive Group Limited | Hospitality | 2020 |
| Alive Wellness Centre C.I.C. | Health & social care | 2024 |
| Alivias Housing Ltd | Real estate | 2025 |
| Alivira Animal Health UK Ltd | Financial services | 2020 |
| Aliya Storage Ltd | Transport & logistics | 2023 |
| Aliyah Super Foods Ltd | Hospitality | 2025 |
| Aliyah Zayna Ltd | Real estate | 2009 |
| Aliyon Ltd | Health & social care | 2022 |
| Aliyon Property Group Ltd | Households | 2024 |
| Aliysf Ltd | Transport & logistics | 2024 |
| Aliza Business Academy Ltd | Education | 2020 |
| Aliza's Distribution Limited | Hospitality | 2016 |
| Aljazeera Halal Meat & Poultry Ltd | Wholesale & retail | 2018 |
| Aljazeera Property Solutions Ltd | Real estate | 2024 |
| ALK Alliance UK Ltd | Hospitality | 2019 |
| Alkadra Limited | Wholesale & retail | 2016 |
| Alkahf Times Ltd | Households | 2024 |
| Alkalign Ltd | Hospitality | 2023 |
| Alkamoos Limited | Real estate | 2025 |
| Alkaram Trading Ltd | Hospitality | 2022 |
| Alkhair Services Ltd | Construction | 2021 |
| Alkhair Travel Ltd | Administrative & support | 2016 |
| Alkhasayis Ltd | Real estate | 2025 |
| Alkhemist Ltd | Wholesale & retail | 2018 |
| ALL Abodes Ltd | Real estate | 2022 |
| ALL About Automotive Ltd | Wholesale & retail | 2024 |
| ALL About Detail UK Ltd | Administrative & support | 2025 |
| ALL About Lymphoedema CIC | Information & communication | 2024 |
| ALL About Roofing (Birmingham) Limited | Construction | 2020 |
| ALL About the Apps Ltd | Information & communication | 2020 |
| ALL About the Music Hub CIC | Arts & recreation | 2025 |
| ALL Arms Marketing and Manufacturing Organisation Limited | Extraterritorial | 2007 |
| ALL Aspects Heating Ltd | Construction | 2006 |
| ALL Bills Included Ltd | Extraterritorial | 2015 |
| ALL Blinds Limited | Other services | 1985 |
| ALL Blue Electrical Services Limited | Administrative & support | 2024 |
| ALL Brands Ltd | Wholesale & retail | 2004 |
| ALL Bumpers Ltd | Wholesale & retail | 2024 |
| ALL Care in One Limited | Health & social care | 2012 |
| ALL Care in One Properties Limited | Real estate | 2020 |
| ALL Care Residential Services Ltd | Health & social care | 2025 |
| ALL Day DR Limited | Health & social care | 2020 |
| ALL Day Logistics Ltd | Transport & logistics | 2019 |
| ALL Direction Transport Ltd | Transport & logistics | 2017 |
| ALL Drain Solutions (Midlands) Limited | Water & waste | 2010 |
| ALL Drain Solutions Ltd | Extraterritorial | 2021 |
| ALL Dwellings Limited | Real estate | 2020 |
| ALL Electric Car Parts UK Ltd | Wholesale & retail | 2020 |
| ALL Finishing Solutions Ltd | Manufacturing | 2024 |
| ALL for 1 Transport Ltd | Transport & logistics | 2016 |
| ALL GAS Maintenance Ltd | Construction | 2026 |
| ALL Greek Limited | Hospitality | 2013 |
| ALL Greek Street Food Ltd | Hospitality | 2021 |
| ALL in 1 Drinks Ltd | Wholesale & retail | 2025 |
| ALL in Gaming Ltd | Information & communication | 2023 |
| ALL in One 2015 Ltd | Wholesale & retail | 2015 |
| ALL in One Consultants Ltd | Information & communication | 2024 |
| ALL in One Store Limited | Wholesale & retail | 2017 |
| ALL in One Super Management Limited | Other services | 2024 |
| ALL IT NW Limited | Information & communication | 2021 |
| ALL KC Ltd | Construction | 2025 |
| ALL Land Management Limited | Real estate | 2019 |
| ALL Media Global Ltd | Information & communication | 2026 |
| ALL Natural Treats Ltd | Wholesale & retail | 2025 |
| ALL New Food Limited | Real estate | 2019 |
| ALL Path Ventures Ltd | Transport & logistics | 2025 |
| ALL Promoted UK Limited | Wholesale & retail | 2023 |
| ALL Properties Maintenance Limited | Administrative & support | 2009 |
| ALL Purpose Cleaning Ltd | Administrative & support | 2022 |
| ALL Purpose Maintenance Limited | Administrative & support | 2022 |
| ALL Purpose Payroll Solutions Ltd | Professional & scientific | 2017 |
| ALL Round Care and Support Limited | Administrative & support | 2025 |
| ALL Round Care Solutions Limited | Health & social care | 2022 |
| ALL Round Property Maintenance Limited | Construction | 2018 |
| ALL Rounder Property Services Ltd | Construction | 2024 |
| ALL Saints Community Development Company | Administrative & support | 2002 |
| ALL Saints Community Projects | Administrative & support | 2008 |
| ALL Saints Supplies Ltd | Wholesale & retail | 2025 |
| ALL Season Car Hire Ltd | Administrative & support | 2022 |
| ALL Seasons Care Limited | Health & social care | 2002 |
| ALL Seasons Fishmongers Ltd | Wholesale & retail | 2015 |
| ALL Seasons Global Limited | Manufacturing | 2025 |
| ALL Secure Group Ltd | Administrative & support | 2021 |
| ALL Security Systems (Fire) Limited | Other services | 2011 |
| ALL Security Systems Ltd | Administrative & support | 2006 |
| ALL Services 4U Locksmith Perry Barr Ltd | Administrative & support | 2025 |
| ALL SET PAY Limited | Professional & scientific | 2024 |
| ALL Sheng Limited | Construction | 2022 |
| ALL Sorts Wholesale Ltd | Wholesale & retail | 2020 |
| ALL Sorts WM Ltd | Wholesale & retail | 2017 |
| ALL SPARES123 Ltd | Wholesale & retail | 2018 |
| ALL SPARES247 Limited | Extraterritorial | 2021 |
| ALL Star Lettings Ltd | Real estate | 2024 |
| ALL Star Teaching Solutions Ltd | Administrative & support | 2025 |
| ALL Stars Entertainment Limited | Information & communication | 2023 |
| ALL Starz Limited | Real estate | 2025 |
| ALL Surfaces Limited | Other services | 2003 |