| AF1984 Limited | Wholesale & retail | 2021 |
| AFC & Pizza Ltd | Hospitality | 2025 |
| AFC Pizza Ltd | Hospitality | 2026 |
| AFE Vehicles Ltd | Wholesale & retail | 2021 |
| Affluva Tiles Ltd | Wholesale & retail | 2024 |
| AFM Holdings Limited | Financial services | 2024 |
| Afzal Travel & Tours Ltd | Administrative & support | 2025 |
| AG Hockey Ltd | Wholesale & retail | 2019 |
| AG Sprinkler Services Ltd | Other services | 2023 |
| AGD Development Limited | Information & communication | 2025 |
| Agentmxm Limited | Real estate | 2023 |
| Aghtarafi Property Ltd | Real estate | 2018 |
| Agilent Technologies LDA UK Limited | Professional & scientific | 2013 |
| Agrotes Ltd | Wholesale & retail | 2024 |
| AH Developments NW Ltd | Construction | 2020 |
| AH Housing Solutions Limited | Real estate | 2024 |
| AH Investments Ltd | Real estate | 2023 |
| AH Property NW Ltd | Real estate | 2020 |
| AHM Pharma Ltd | Wholesale & retail | 2024 |
| Ahmad & Co Properties Limited | Real estate | 2025 |
| Ahmed Alawsi Limited | Health & social care | 2017 |
| Ahmina Ltd | Wholesale & retail | 2024 |
| Ahmw Food Ltd | Hospitality | 2025 |
| AHR Global Ltd | Administrative & support | 2023 |
| Ahsics Technology Group Ltd | Financial services | 2024 |
| Ahss Services Ltd | Administrative & support | 2024 |
| Ahussainpharma Limited | Wholesale & retail | 2024 |
| Ahwak Perfumery Limited | Wholesale & retail | 2025 |
| Ahzeen Optical Ltd | Wholesale & retail | 2023 |
| AIB Accounting Ltd | Professional & scientific | 2018 |
| Aiba Trading Limited | Information & communication | 2010 |
| Aipn Property Ltd | Real estate | 2025 |
| Air Care Solutions Limited | Wholesale & retail | 2020 |
| Air Talent Group Ltd | Administrative & support | 2024 |
| Airfawn Garage Services Limited | Wholesale & retail | 2007 |
| Aisha Body Oils & Accessories Ltd | Wholesale & retail | 2022 |
| Aisha Fast Food Limited | Hospitality | 2026 |
| AJ Hold Co Ltd | Professional & scientific | 2024 |
| AJ Multi-Clean Ltd | Administrative & support | 2020 |
| AJ Primus Healthcare Limited | Health & social care | 2012 |
| Aj&Se Investments Limited | Financial services | 2024 |
| AJM Design Consultants Limited | Professional & scientific | 2012 |
| AJM Property Sourcing Ltd | Wholesale & retail | 2024 |
| Ajmim Ltd | Wholesale & retail | 2024 |
| AK R Mini Market Limited | Wholesale & retail | 2024 |
| AK Sales Solutions Ltd | Professional & scientific | 2024 |
| AKA Real Estate Ltd | Real estate | 2025 |
| AKA Trade Limited | Wholesale & retail | 2015 |
| AKC (UK) Limited | Professional & scientific | 2002 |
| AKC Accountants Limited | Professional & scientific | 2001 |
| AKF Media Ltd | Professional & scientific | 2025 |
| Akgul Hair Care and Beauty Ltd | Other services | 2021 |
| Akhlaq & SON Ltd | Wholesale & retail | 2021 |
| AKI Bento Ltd | Hospitality | 2024 |
| Akmh Ltd | Hospitality | 2025 |
| Aknh Consulting Ltd | Professional & scientific | 2008 |
| AKU Optics Limited | Information & communication | 2026 |
| AKZ Plumbing & Heating Ltd | Construction | 2018 |
| AL Barakah Trading Ltd | Wholesale & retail | 2024 |
| AL Faisal MC Limited | Hospitality | 2025 |
| AL Management Services Ltd | Arts & recreation | 2018 |
| AL Properties (Manchester) Limited | Real estate | 2023 |
| AL Tahera Ltd | Health & social care | 2026 |
| Al-Huda Manchester | Education | 2014 |
| Al-Kifayah Ltd | Manufacturing | 2025 |
| Al-Shifa Services Ltd | Health & social care | 2024 |
| Alamaz Limited | Wholesale & retail | 2011 |
| Alamaz Properties Limited | Construction | 2019 |
| Alan Thompson Motor Engineers Ltd | Wholesale & retail | 2014 |
| Albert Barns Management Ltd | Households | 2022 |
| Albi-Uk Limited | Transport & logistics | 2016 |
| Albi-Uk Transport Ltd | Transport & logistics | 2025 |
| Albite Solutions Ltd | Information & communication | 2016 |
| Albufeira Events Ltd. | Administrative & support | 2024 |
| Alchemy Studio AI Ltd | Professional & scientific | 2025 |
| Alcohol Uncensored Ltd | Arts & recreation | 2025 |
| Alderley Court Management Limited | Households | 1973 |
| Alderley Investment Properties Limited | Real estate | 2023 |
| Alderley Lighthouse Labs Ltd | Health & social care | 2022 |
| Alexander Court Developments Limited | Professional & scientific | 2004 |
| Alexander Domini Ltd | Other services | 2020 |
| Alexander House Wealth Management Limited | Financial services | 2012 |
| Alexanders Homes Limited | Construction | 2015 |
| ALGARRA7 Ltd | Health & social care | 2026 |
| Alien Concrete and Transport Limited | Transport & logistics | 2016 |
| Alindale Limited | | 1988 |
| Alinement Ltd | Information & communication | 2025 |
| Alisha Jade Bridal Ltd | Wholesale & retail | 2019 |
| Alison Rigg (Property) Ltd | Real estate | 2023 |
| Alison Rigg Limited | Financial services | 2004 |
| Alkhaddar Holdings Limited | Health & social care | 2016 |
| ALL Aspects Build Developments Ltd | Construction | 2022 |
| ALL in Stone Ltd | Manufacturing | 2017 |
| ALL Star Roofing and Building Ltd | Construction | 2025 |
| ALL Superb Ltd | Construction | 2015 |
| Alleycat Consultancy Limited | Information & communication | 1994 |
| Allsorts House Clearances Limited | Other services | 2026 |
| Allure Nail and Beauty Lounge Ltd | Other services | 2023 |
| Allways Trading 25 Ltd | Wholesale & retail | 2025 |
| Alma Labs Limited | Health & social care | 2022 |