| Aldopt Limited | Health & social care | 2025 |
| Aldridge Baber Ltd | Other services | 2023 |
| Aldridge Accident & Repair Centre Limited | Wholesale & retail | 2000 |
| Aldridge and Barons Limited | Transport & logistics | 2012 |
| Aldridge Architectural Design Ltd | Professional & scientific | 2015 |
| Aldridge Book-Keeping Services Limited | Financial services | 2003 |
| Aldridge Business Services Limited | Administrative & support | 2012 |
| Aldridge Construction Services Ltd | Construction | 2019 |
| Aldridge Contract Services Limited | Construction | 2013 |
| Aldridge Financial Accountants Limited | Professional & scientific | 2007 |
| Aldridge Firewood Limited | Wholesale & retail | 2025 |
| Aldridge Food Co (DK) Limited | Hospitality | 2023 |
| Aldridge Food Limited | Hospitality | 2025 |
| Aldridge Maintenance Services Limited | Construction | 2017 |
| Aldridge Management Accountancy Services Ltd | Professional & scientific | 2012 |
| Aldridge Mortgages & Protection Limited | Financial services | 2023 |
| Aldridge MOT & Diagnostic Centre Ltd | Wholesale & retail | 2016 |
| Aldridge Motor Bodies Ltd | Wholesale & retail | 2003 |
| Aldridge Optical Serivces Limited | Health & social care | 2019 |
| Aldridge Payroll Solutions Ltd | Professional & scientific | 2017 |
| Aldridge Premier Tuition Limited | Education | 2015 |
| Aldridge Prime Limited | Construction | 2010 |
| Aldridge Properties Ltd | Real estate | 2018 |
| Aldridge Rugby Football Club Limited | Arts & recreation | 2010 |
| Aldridge Vale Associates Ltd | Professional & scientific | 2002 |
| Aldridge Village Partnership | Health & social care | 2014 |
| Alecom Transport Limited | Administrative & support | 2021 |
| Alex Bros Ltd | Wholesale & retail | 2016 |
| Alex Miller Photography Limited | Professional & scientific | 2016 |
| Alexander Care Limited | Health & social care | 2025 |
| Alexandrini Limited | Professional & scientific | 2020 |
| Alexiternational Ltd | Transport & logistics | 2020 |
| ALF Barnard Ltd | Transport & logistics | 2019 |
| Alfa Engineering Supplies Limited | Real estate | 2007 |
| Alfred Parker Electrical Ltd | Energy | 2014 |
| Alhindu Limited | Transport & logistics | 2026 |
| ALI Abbas Building Ltd | Construction | 2025 |
| ALI Baig Enterprises Ltd | Administrative & support | 2026 |
| ALI Butchers Limited | Wholesale & retail | 2022 |
| Ali's Food Shack Limited | Hospitality | 2025 |
| Align Property Solutions Ltd | Real estate | 2025 |
| Aligned Certification Ltd | Professional & scientific | 2020 |
| Alijo Limited | Health & social care | 2025 |
| Alimar Logistics Limited | Transport & logistics | 2018 |
| Alimento Trading Ltd | Hospitality | 2026 |
| Alimita 2 Limited | Financial services | 2025 |
| Alimita 3 Limited | Financial services | 2025 |
| Alimita 4 Limited | Financial services | 2025 |
| Alimita Limited | Financial services | 2025 |
| Alinbogdan Transport Ltd | Transport & logistics | 2019 |
| Alisha Cordell Limited | Health & social care | 2022 |
| Alisha Mart Ltd | Wholesale & retail | 2026 |
| Alisha's Beauty Salon Ltd | Other services | 2024 |
| Alison Frances Daphne Pritchard Limited | Extraterritorial | 2026 |
| Alison Frances Daphne Teague Limited | Extraterritorial | 2024 |
| Alix Solutions Ltd | Wholesale & retail | 2025 |
| Alixis Consulting Ltd | Professional & scientific | 2025 |
| Alkad Properties Ltd | Real estate | 2025 |
| Alkermerz Ltd | Transport & logistics | 2024 |
| ALL About Fireworks (2025) Limited | Wholesale & retail | 2025 |
| ALL Aspects Mezz Ltd | Construction | 2022 |
| ALL Autoparts UK Ltd | Wholesale & retail | 2014 |
| ALL Cars 102 Ltd | Wholesale & retail | 2018 |
| ALL Clear WAX Removal Ltd | Health & social care | 2026 |
| ALL Dolled UP Hair Ltd | Other services | 2019 |
| ALL Health Care Services Limited | Health & social care | 2019 |
| ALL Nations Home Care Ltd | Public administration | 2024 |
| ALL Round Property Services (Staffs) Limited | Construction | 2018 |
| ALL Seasons Cleaning Ltd | Administrative & support | 2026 |
| ALL SET Essentials Ltd | Wholesale & retail | 2025 |
| ALL Stars Walsall CIC | Education | 2020 |
| All-In-One Business Services Ltd | Professional & scientific | 2012 |
| ALL4US Limited | Wholesale & retail | 2026 |
| Allcore Limited | Wholesale & retail | 2011 |
| Allen Automotive Limited | Wholesale & retail | 2021 |
| Allen's Haulage Ltd | Transport & logistics | 2023 |
| Allevat Limited | Manufacturing | 2015 |
| Alleyne&Rowan Ltd | Real estate | 2020 |
| Alliance Accountants (Grant & Co) Limited | Professional & scientific | 2006 |
| Alliance Accountants (Ross-On-Wye) Limited | Professional & scientific | 2016 |
| Alliance Accountants Limited | Extraterritorial | 2006 |
| Alliance Construction Services Limited | Construction | 2017 |
| Alliance Contractors (ENG) Ltd | Construction | 2017 |
| Alliance Groundworks and Civils Limited | Construction | 2020 |
| Alliance Optical Co. (Harborne) Limited | Wholesale & retail | 1958 |
| Allianz Auto Parts Ltd | Wholesale & retail | 2025 |
| Allied Import Products Ltd | Manufacturing | 2016 |
| Allires Care Services Ltd | Public administration | 2023 |
| Allires Cleaning Services Limited | Administrative & support | 2023 |
| Allkam Limited | Wholesale & retail | 2012 |
| Allmarks Bakery Limited | Wholesale & retail | 2011 |
| Allnall Solutions Ltd | Construction | 2022 |
| Allsopp Advisory Group Limited | Professional & scientific | 2025 |
| Allways Care Ltd | Other services | 2013 |
| Almar Cars Limited | Transport & logistics | 2015 |
| Almazal Logistics Ltd | Transport & logistics | 2024 |
| Almo Plumbing & Heating Supply Limited | Wholesale & retail | 2019 |
| Almozene Nursery and Children's Centre Ltd | Health & social care | 2004 |
| Alom Network Ltd | Extraterritorial | 2024 |
| ALP Foods Ltd | Hospitality | 2022 |