| Alice (Relief of Poverty and Advancement of Community) | Health & social care | 2011 |
| Alice Childcare Ltd | Health & social care | 2022 |
| Aligned Health Ltd | Health & social care | 2025 |
| Alimm Limited | Real estate | 2025 |
| Alin Augustin Limited | Transport & logistics | 2025 |
| Alirom Catering Ltd | Hospitality | 2025 |
| Alirom Ltd | Financial services | 2018 |
| Alisan Ltd | Other services | 2019 |
| Alisheh Mart Ltd | Wholesale & retail | 2026 |
| Alisoft Solutions Limited | Information & communication | 2024 |
| Alistair Little Cinematography Limited | Information & communication | 2017 |
| Aliza Properties Ltd | Real estate | 2020 |
| Alizha Authentic Ltd | Hospitality | 2024 |
| ALJ Enterprises Limited | Manufacturing | 2023 |
| Aljo Consulting Limited | Professional & scientific | 2026 |
| Alkxg Ltd | Transport & logistics | 2025 |
| ALL About Dogs Global CIC | Education | 2026 |
| ALL About Pillows Limited | Manufacturing | 2020 |
| ALL Aspect Supplies Ltd | Wholesale & retail | 2025 |
| ALL Branding Ltd | Professional & scientific | 2021 |
| ALL Festivals Limited | Wholesale & retail | 2022 |
| ALL Secure Security Services Ltd | Administrative & support | 2020 |
| ALL Skills Services Limited | Administrative & support | 2019 |
| ALL Sorts Cleaned Ltd | Administrative & support | 2020 |
| ALL Stock Trading Ltd | Wholesale & retail | 2025 |
| ALL the Small Things C.I.C. | Health & social care | 2015 |
| ALL to Play for Ltd | Arts & recreation | 2018 |
| ALL Ways Learning Ltd | Education | 2025 |
| ALL Ways Private Hire Ltd | Transport & logistics | 2021 |
| ALL Weather Healthcare Ltd | Health & social care | 2020 |
| ALL Woofs and Whiskers Ltd | Other services | 2023 |
| ALL Zone Taxis Ltd | Transport & logistics | 2024 |
| All-Ways Driving Ltd | Wholesale & retail | 2017 |
| ALL41CARE Ltd | Health & social care | 2024 |
| Allan Controls & Automation Limited | Information & communication | 2000 |
| Allchris Ltd | Transport & logistics | 2024 |
| Allcoat Decorators Limited | Construction | 2022 |
| Allen Jones Ventures Limited | Real estate | 2025 |
| Allergen.Io Limited | Information & communication | 2025 |
| Allergy Menu Limited | Information & communication | 2017 |
| Allform Labs Limited | Information & communication | 2026 |
| Allgoodload Limited | Transport & logistics | 2026 |
| Alliance Engineering Solutions Limited | Administrative & support | 2008 |
| Alliance Group Holdings Ltd | Financial services | 2022 |
| Alliance Technical Services Limited | Construction | 1998 |
| Allied Approvals Ltd | Professional & scientific | 2008 |
| Allied Electrical Systems Limited | Construction | 2005 |
| Allied Mart International Ltd | Wholesale & retail | 2024 |
| Allinson Travel Ltd | Transport & logistics | 2025 |
| Allo Pizza & Pasta Group Ltd | Hospitality | 2026 |
| Alloys Wheels by Orion Limited | Wholesale & retail | 2017 |
| Allpower Solutions Limited | Construction | 2020 |
| Allsop Construction Ltd | Construction | 2009 |
| Allsorts Stores Limited | Wholesale & retail | 2012 |
| Allsteel Engineering Ltd | Manufacturing | 2019 |
| Allsteel Engineering Services Ltd | Construction | 2016 |
| Allure Scents Limited | Manufacturing | 2023 |
| Ally Cat Balloons Limited | Wholesale & retail | 2026 |
| Almagro Limited | Real estate | 2019 |
| Almatt Properties Limited | Construction | 2013 |
| Aloha Ltd | Transport & logistics | 2023 |
| ALP Plant Operators Ltd | Construction | 2019 |
| Alpha Academies Trust | Education | 2010 |
| Alpha Agriculture Limited | Wholesale & retail | 2014 |
| Alpha Animal Physiotherapy Ltd | Agriculture & fishing | 2021 |
| Alpha Business Communications Ltd | Information & communication | 1999 |
| Alpha Business Communications Technology Solutions Limited | Other services | 2001 |
| Alpha Engineering Holdings Ltd | Manufacturing | 2023 |
| Alpha Engineering Solutions Holdings Limited | Financial services | 2025 |
| Alpha Foods & Services Limited | Extraterritorial | 2026 |
| Alpha Glory Ltd | Wholesale & retail | 2026 |
| Alpha Grove Private Hire Ltd | Transport & logistics | 2023 |
| Alpha Halal Vension Ltd | Wholesale & retail | 2022 |
| Alpha Learning Staffordshire Limited | Education | 2016 |
| Alpha Properties Stoke Limited | Real estate | 2022 |
| Alpha Roofing (Stoke) Limited | Construction | 2018 |
| Alpha Tiling & Screeding Solutions Ltd | Construction | 2023 |
| Alpha Transport Servce Ltd | Transport & logistics | 2021 |
| Alphagenservices Ltd | Construction | 2025 |
| Alpio Cosmetics Limited | Manufacturing | 2021 |
| Alpio Naturotherapy Limited | Wholesale & retail | 2023 |
| Alrg Investments Limited | Financial services | 2021 |
| Alsagar Convenience Ltd | Wholesale & retail | 2021 |
| Alsager Auto Spares Limited | Wholesale & retail | 2026 |
| Alsager Computers Limited | Information & communication | 2015 |
| Alsager Construction Ltd | Construction | 2024 |
| Alsager Delights Takeout Ltd | Hospitality | 2019 |
| Alsager Fast Food Ltd | Hospitality | 2025 |
| Alsager GAS Services Limited | Construction | 2012 |
| Alsager Gents Ltd | Other services | 2024 |
| Alsager Lettings Limited | Real estate | 2025 |
| Alsager Paint and Paper Ltd | Wholesale & retail | 2020 |
| Alsager Pizza Ltd | Hospitality | 2026 |
| Alsager Skip Hire Limited | Professional & scientific | 2005 |
| Alsun Ltd | Health & social care | 2022 |
| ALT Creative Ltd | Information & communication | 2020 |
| Alter EGO Barbers Limited | Other services | 2026 |
| ALTER-N8TIVE-SPACES Ltd | Professional & scientific | 2025 |
| Altered Apparel Ltd | Wholesale & retail | 2018 |
| Alternative Computers Ltd | Manufacturing | 2026 |