| AM Bodyshop Ltd | Wholesale & retail | 2025 |
| AM Directions Limited | Transport & logistics | 2021 |
| AM Estates Liverpool Ltd | Real estate | 2023 |
| AM Optical Group Ltd | Wholesale & retail | 2022 |
| AM Opticare Ltd | Health & social care | 2023 |
| AM Procurement Ltd | Wholesale & retail | 2023 |
| AM Property Traders Ltd | Real estate | 2021 |
| AM Transporters (Manchester) Ltd | Transport & logistics | 2023 |
| AM1 Construct Ltd | Construction | 2024 |
| AM1 Property Ltd | Real estate | 2024 |
| AMA Food Group Ltd | Hospitality | 2025 |
| Amable Marten Ltd | Information & communication | 2020 |
| Amac Decorators Ltd | Construction | 2025 |
| Amac Ltd | Wholesale & retail | 2026 |
| Amafh Traders Ltd | Wholesale & retail | 2024 |
| Amanah Funeral Services Ltd | Other services | 2026 |
| Amanah Junction Ltd | Administrative & support | 2011 |
| Amanah Real Estates Ltd | Real estate | 2026 |
| Amanda Super Consulting Ltd | Professional & scientific | 2012 |
| Amans Stockton Heath Ltd | Hospitality | 2021 |
| Amati (Manchester) Ltd | Hospitality | 2014 |
| Amatory Ltd | Wholesale & retail | 2015 |
| Amazon Medical Limited | Administrative & support | 1995 |
| Amazonia Trading Limited | Wholesale & retail | 2025 |
| AMB FOOD4YOU Ltd | Wholesale & retail | 2013 |
| Ambarch Holdings Ltd | Real estate | 2024 |
| Ambassador Textiles Limited | Wholesale & retail | 1972 |
| Ambassadors Health Care Service Ltd | Health & social care | 2022 |
| Ambe International Limited | Administrative & support | 2021 |
| Amber Car Leasing Ltd | Administrative & support | 2006 |
| Amber Case Management Ltd | Health & social care | 2011 |
| Amber Case Management Therapy Services Ltd | Health & social care | 2018 |
| Amber Case Management Training Ltd | Health & social care | 2018 |
| Amber Conveyors Ltd | Professional & scientific | 1999 |
| Amber Industries Limited | Manufacturing | 1999 |
| Amber RAJ Ltd | Hospitality | 2026 |
| Ambianna Ltd | Financial services | 2025 |
| Ambidextrous Solutions Limited | Administrative & support | 2014 |
| Ambrose Nursery Ltd | Education | 2002 |
| Ambscar Holdings Ltd | Financial services | 2024 |
| Ambulance Relief Centres Limited | Health & social care | 2025 |
| AMC Driveways & Roofing Ltd | Construction | 2025 |
| AME Properties North West Ltd | Real estate | 2021 |
| Ameerah&Ahood Limited | Wholesale & retail | 2024 |
| Amext Ltd | Wholesale & retail | 2026 |
| AMF Flooring Limited | Construction | 2022 |
| AMG Detailing Ltd | Manufacturing | 2022 |
| AMH Foods Ltd | Hospitality | 2025 |
| Amigos Traditional Barbers Ltd | Other services | 2026 |
| Amin Finco Ltd | Professional & scientific | 2025 |
| Amin Haque Limited | Professional & scientific | 2018 |
| Aminah Catering (UK) Ltd | Hospitality | 2018 |
| Aminspire Limited | Other services | 2025 |
| Amir Adil Saddiqee Ltd | Construction | 2024 |
| Amir and Imran Enterprise Limited | Public administration | 2025 |
| Amir Construction Group Ltd | Construction | 2022 |
| Amir It-Consulting Limited | Information & communication | 2015 |
| Amira Estates Ltd | Real estate | 2024 |
| Amira Properties Ltd | Real estate | 2024 |
| Amir’S Support Services Ltd | Health & social care | 2023 |
| Amjad Tech Ltd | Information & communication | 2023 |
| Amjgoods Ltd | Wholesale & retail | 2025 |
| Amkay Care Support Limited | Administrative & support | 2018 |
| Amna Enterprises MCR Ltd | Wholesale & retail | 2024 |
| Amnaura Ltd | Other services | 2025 |
| Amonfield Limited | Financial services | 1986 |
| Amor Bamford Ltd | Administrative & support | 2026 |
| Amore Hair Ltd | Other services | 2020 |
| Amos Home Delivery Limited | Transport & logistics | 2025 |
| Ampfab Limited | Manufacturing | 2009 |
| AMR CUT & Make Textile Limited | Manufacturing | 2022 |
| AMS Plastering & Rendering Limited | Construction | 2017 |
| AMS Talent Group Ltd | Administrative & support | 2025 |
| Amsi Plus C.I.C. | Administrative & support | 2026 |
| AMY Sargeant Specialist Beauty Clinic Limited | Other services | 2014 |
| AMZ Group Ltd | Wholesale & retail | 2023 |
| AMZ Investments Ltd | Real estate | 2018 |
| AMZ Wealth Management Ltd | Financial services | 2026 |
| Amzn Global Traders Ltd | Wholesale & retail | 2026 |
| AN Distributor's Ltd | Wholesale & retail | 2026 |
| AN Properties MCR Ltd | Real estate | 2024 |
| ANA Properties & Management Ltd | Real estate | 2024 |
| Anab Essentials Ltd | Wholesale & retail | 2026 |
| Anakin Solutions Limited | Professional & scientific | 2009 |
| Analogue Revival Ltd | Wholesale & retail | 2020 |
| Analytic Systems Ltd | Transport & logistics | 2023 |
| Anarkali Clothing Limited | Wholesale & retail | 2025 |
| Anax Law Ltd | Professional & scientific | 2026 |
| Anaxion Limited | Agriculture & fishing | 2013 |
| Anbc Global Procurement UK Limited | Professional & scientific | 2022 |
| Anbridge House Care Home Ltd | Health & social care | 2024 |
| ANC Automotive Ltd | Wholesale & retail | 2024 |
| Anchorhold Properties Ltd | Real estate | 2025 |
| Anco Food Services Ltd | Wholesale & retail | 2020 |
| Ancoats Limited | Real estate | 2018 |
| AND Mortgages and Protection Limited | Financial services | 2026 |
| Andas Group Ltd | Real estate | 2025 |
| Anderson (Northwest) Limited | Arts & recreation | 2020 |
| Anderson Martin Limited | Professional & scientific | 2022 |
| Anderson-Wild Ltd | Professional & scientific | 2018 |