| Amadiel Ltd | Information & communication | 2018 |
| Amado Flight Limited | Wholesale & retail | 2025 |
| Amafhha Housing Ltd | Wholesale & retail | 2024 |
| Amafhha Traders Limited | Wholesale & retail | 2019 |
| Amafhha Worldwide Limited | Wholesale & retail | 2023 |
| Amagh Limited | Wholesale & retail | 2026 |
| Amai Advisory Limited | Information & communication | 2025 |
| Amai Capital Limited | Professional & scientific | 2024 |
| Amai Foods and Beverages Ltd | Hospitality | 2020 |
| Amakafes Estates Services Limited | Real estate | 2026 |
| AMAKS2017 Limited | Extraterritorial | 2017 |
| Amal Almustaqbal Almumayyaza Ltd | Wholesale & retail | 2026 |
| Amal Care Services Limited | Health & social care | 2024 |
| Amal Daisy Ltd | Wholesale & retail | 2024 |
| Amal Dental Ltd | Health & social care | 2022 |
| Amal Leisure Limited | Hospitality | 2022 |
| Amal Search Ltd | Administrative & support | 2022 |
| Amala Living Ltd | Wholesale & retail | 2025 |
| Amala Sky Limited | Manufacturing | 2023 |
| Amalarajan Properties Limited | Real estate | 2025 |
| Amalfi Pizza Ltd | Hospitality | 2025 |
| Amalgamated Finance Limited | Financial services | 2008 |
| Amalgamated Industrials Limited | | 1936 |
| Amalgamated Ltd | Construction | 1970 |
| Amalgamated Property Ltd | Real estate | 2021 |
| Amalgamated Signs Limited | Manufacturing | 1994 |
| Amalgamated Tobacco Company Limited | Professional & scientific | 1960 |
| Amalora Ltd | Hospitality | 2026 |
| Amaluxia Ltd. | Information & communication | 2021 |
| Aman & Sons Ltd | Real estate | 2024 |
| Aman ALI Limited | Construction | 2016 |
| Aman Barbers Ltd | Other services | 2024 |
| Aman Dawu Ltd | Professional & scientific | 2021 |
| Aman Groceries & Booze Ltd | Wholesale & retail | 2025 |
| Aman International Traders Ltd | Wholesale & retail | 2026 |
| Aman Lana Company Ltd | Wholesale & retail | 2025 |
| Aman Multi Activities Ltd | Wholesale & retail | 2025 |
| Aman Remit Limited | Financial services | 2024 |
| Aman Renovation UK Ltd | Construction | 2025 |
| Aman Services Group Ltd | Other services | 2023 |
| Aman Spark Ltd | Wholesale & retail | 2025 |
| Aman's (Lowton) Ltd | Hospitality | 2013 |
| Aman's (NW) Ltd | Hospitality | 2022 |
| Aman@Uk Ltd | Wholesale & retail | 2026 |
| Amana Partnership Ltd | Information & communication | 2022 |
| Amanah Property & Investments Ltd | Real estate | 2025 |
| Amanat Care Ltd | Health & social care | 2024 |
| Amanda Swan Ltd | Wholesale & retail | 2023 |
| Amanda Twigg Ltd | Education | 2013 |
| Amani Capital Ltd | Real estate | 2025 |
| Amani Creatives C.I.C. | Arts & recreation | 2021 |
| Amani Global Services Ltd | Administrative & support | 2021 |
| Amani Xpress Ltd | Other services | 2013 |
| Amani's Foods Limited | Hospitality | 2018 |
| Amaning Careerlift CIC | Education | 2026 |
| Amanivo Ltd | Wholesale & retail | 2026 |
| Amante Entertainment Ltd | Administrative & support | 2020 |
| Amanuel Properties Ltd | Real estate | 2025 |
| Amany Company Limited | Wholesale & retail | 2022 |
| Amaq Al-Sarooj Investment Company Ltd | Wholesale & retail | 2025 |
| Amar Property Holdings Ltd | Real estate | 2025 |
| Amar&Sons Ltd | Construction | 2017 |
| Amara Turkish Taste Ltd | Hospitality | 2018 |
| Amaranthine Labs Ltd | Information & communication | 2022 |
| Amarati Ltd | Wholesale & retail | 2023 |
| Amarc (Training Education and Safety) Limited | Administrative & support | 1976 |
| Amarc Properties Ltd | Real estate | 2024 |
| Amare Aurum Ltd | Wholesale & retail | 2016 |
| Amare Media Limited | Professional & scientific | 2023 |
| Amarg International Limited | Administrative & support | 2021 |
| Amari Construction Group Ltd | Construction | 2026 |
| Amari Designer Ltd | Construction | 2025 |
| Amari Trading Ltd | Manufacturing | 2024 |
| Amarillo Accounting Ltd | Professional & scientific | 2020 |
| Amaris Designs Ltd | Administrative & support | 2003 |
| Amarkhi Sales Ltd | Wholesale & retail | 2024 |
| Amarone Aviation Ltd | Professional & scientific | 2021 |
| Amaronly Ltd | Information & communication | 2024 |
| Amaryllis Cleaning Service Ltd | Administrative & support | 2023 |
| Amaryllis Day Nursery Ltd | Education | 2017 |
| Amas Consultancy & Mediation Ltd | Information & communication | 2025 |
| Amatimo Limited | Information & communication | 2009 |
| Amato Food Products Limited | Wholesale & retail | 2011 |
| Amato Holdings Ltd | Financial services | 2024 |
| Amato Property Ltd | Real estate | 2024 |
| Amaya & Co (NW) Ltd | Hospitality | 2026 |
| Amaya Adimora Ltd | Health & social care | 2025 |
| Amayo Global Holdings Ltd | Wholesale & retail | 2024 |
| Amaz Limited | Wholesale & retail | 2025 |
| Amaze Payroll Limited | Administrative & support | 2021 |
| Amaze Umbrella Ltd | Administrative & support | 2017 |
| Amazebuy Limited | Wholesale & retail | 2025 |
| Amazedm Limited | Administrative & support | 2021 |
| Amazeeri Limited | Wholesale & retail | 2024 |
| Amazella (Marylebone) Limited | Hospitality | 2011 |
| Amazigh Community Organisation Ltd | Education | 2020 |
| Amazin' Business Solutions Ltd | Professional & scientific | 2010 |
| Amazing Cleaning Services Ltd | Administrative & support | 2022 |
| Amazing Grace Express Ltd | Professional & scientific | 2015 |
| Amazing Grace Properties Limited | Real estate | 2020 |