| Amextrans L.P. | | 2015 |
| Ameya (Europe) Limited | Professional & scientific | 2012 |
| AMF Wyatt Limited | Arts & recreation | 2025 |
| Amfab Limited | Manufacturing | 2018 |
| Amfilia Property Ltd | Real estate | 2025 |
| Amfitrade LP | | 2014 |
| Amfx Trading Group LP | | 2017 |
| AMG 99 Limited | Wholesale & retail | 2017 |
| AMG Construction Specialists Ltd | Construction | 2019 |
| AMG First AID Ltd | Education | 2023 |
| AMG Global LP | | 2014 |
| AMG Mechanical Limited | Construction | 2016 |
| AMH Delivery Ltd | Transport & logistics | 2019 |
| Amhola Capital UK Limited | Professional & scientific | 2023 |
| Amhuinnsuidhe Castle Limited | Arts & recreation | 2010 |
| AMI Project Consulting Limited | Professional & scientific | 2014 |
| Amia Investments L.P. | | 2015 |
| Amia Wealth Management Ltd | Financial services | 2018 |
| Amiamj Ltd | Wholesale & retail | 2024 |
| Amicas Business Solutions Ltd | Professional & scientific | 2015 |
| Amici Actuarial Consulting Ltd | Financial services | 2014 |
| Amicus Capital Projects Limited | Professional & scientific | 2015 |
| Amicus Property Consultants Limited | Professional & scientific | 2013 |
| Amida Capital LP | | 2016 |
| Amids (Renfrewshire) LLP | | 2023 |
| Amidss Limited | Administrative & support | 2024 |
| Amikta Commerce LP | | 2015 |
| Aminar LP | | 2017 |
| Amineshe LP | | 2004 |
| Aminnaji ML Consulting Ltd | Professional & scientific | 2025 |
| Amiot LP | | 2016 |
| Amiqus Resolution Limited | Information & communication | 2015 |
| Amir & Sons Ltd | Wholesale & retail | 2016 |
| Amir Zarar Ltd | Households | 2024 |
| Amir's Cars Ltd | Administrative & support | 2019 |
| Amirton L.P. | | 2015 |
| Amistad Business LP | | 2019 |
| Amisto Trade LP | | 2018 |
| Amitabha Ltd | Real estate | 2021 |
| Amity Overseas L.P. | | 2009 |
| Amity Projects LP | | 2015 |
| Amiwest Industries LP | | 2013 |
| AMJ (EDI) Ltd | Construction | 2019 |
| AMJ Tech Consultants Ltd | Information & communication | 2022 |
| Amjad Car Services Limited | Transport & logistics | 2025 |
| Amjen Financial Planning Ltd | Professional & scientific | 2023 |
| Amjf Properties Limited | Real estate | 1997 |
| Amko Logistics LP | | 2014 |
| Amline Management L.P. | | 2015 |
| Amlo Edinburgh Limited | Real estate | 2007 |
| Ammer CAB Limited | Transport & logistics | 2023 |
| Ammexjet LP | | 2003 |
| Ammonite Services Ltd | Professional & scientific | 2022 |
| Amna PH Ltd | Transport & logistics | 2026 |
| Amna Retreats Ltd | Administrative & support | 2025 |
| AMO Management Limited Partnership | | 1989 |
| Amoi Limited | Real estate | 2023 |
| Amolingua Limited | Education | 2016 |
| Amon European Trade LP | | 2016 |
| Amon Investments LP | | 2011 |
| Amoongun Trade LP | | 2018 |
| Amori E Sapori Limited | Hospitality | 2018 |
| Amorist Bistro Bar Ltd | Hospitality | 2024 |
| Amos Europe (UK) Limited | Wholesale & retail | 2008 |
| Amos Macleod Developments Ltd | Construction | 2014 |
| Ampeak Energy Resources Limited | Real estate | 2022 |
| Amper International LP | | 2016 |
| Amper Trading LP | | 2017 |
| Amper Zoom LP | | 2016 |
| Ampere-San Events Ltd | Professional & scientific | 2024 |
| Ampersand Communications Ltd | Information & communication | 2025 |
| Ampersand Interiors Limited | Professional & scientific | 2016 |
| Amphora Partners LP | | 2015 |
| Amphora Platinum LP | | 2016 |
| Ampie Ltd | Hospitality | 2023 |
| Ampir LP | | 2013 |
| Ample Beauty LP | | 2016 |
| Ample Clothing Ltd | Wholesale & retail | 2026 |
| Ample Forte LP | | 2016 |
| Ample Hope Global LP | | 2016 |
| Amplica Trading LP | | 2017 |
| Amporn Properties Limited | Real estate | 2026 |
| Ampp Ltd | Real estate | 2022 |
| AMR Hair Limited | Other services | 2024 |
| AMR Scot Limited | Wholesale & retail | 2023 |
| Amritanand Ltd | Information & communication | 2024 |
| Amro Corporation L.P. | | 2012 |
| Amro Global L.P. | | 2011 |
| Amro Holdings L.P. | | 2008 |
| AMS Barclay Ltd | Wholesale & retail | 2019 |
| AMS Edinburgh Ltd | Wholesale & retail | 2021 |
| AMS Facilities Ltd | Administrative & support | 2025 |
| AMS Properties Scot Ltd | Real estate | 2024 |
| Amsberg Solutions LP | | 2015 |
| Amselm LP | | 2013 |
| Amsterdam & Paris LP | | 2012 |
| Amsterdam Impex LP | | 2011 |
| Amsterdam LOT LP | | 2016 |
| Amstrad Maritime LP | | 2017 |
| Amtec Services L.P. | | 2009 |