| Aaman Limited | Wholesale & retail | 2018 |
| Aamana Property Investments Limited | Construction | 2021 |
| Aamani Events & Hire Ltd | Hospitality | 2023 |
| Aamar HR Ltd | Health & social care | 2020 |
| Aamas Enterprises Ltd | Hospitality | 2024 |
| Aamir Builders Private Limited | Construction | 2022 |
| Aamira Restaurant Ltd | Hospitality | 2025 |
| Aamiron Company Limited | Health & social care | 2023 |
| Aampala Ltd | Construction | 2021 |
| AAN Food Ltd | Hospitality | 2025 |
| AAN Insulation Ltd | Construction | 2024 |
| Aanchal Exclusive Ltd | Wholesale & retail | 2023 |
| Aanchal Ltd | Wholesale & retail | 2018 |
| Aangel Ltd | Manufacturing | 2017 |
| Aansaea Ltd | Administrative & support | 2025 |
| Aapke Meizban Ltd | Hospitality | 2020 |
| Aapm (Mansfield) Limited | Real estate | 2020 |
| AAQ Homes Ltd | Real estate | 2025 |
| AAQ Housing Limited | Real estate | 2025 |
| AAR Associates Limited | Professional & scientific | 2010 |
| AAR Security Group Ltd | Extraterritorial | 2022 |
| AAR Servicing & Accident Repair Group Ltd | Wholesale & retail | 2018 |
| Aara Fashion Ltd | Wholesale & retail | 2025 |
| Aaran Care Services Ltd | Health & social care | 2014 |
| Aarani Jones Ltd | Professional & scientific | 2025 |
| Aarc 1924 Ltd | Real estate | 2023 |
| Aarden Roofing Limited | Construction | 2020 |
| Aardvark Heating Services Limited | Other services | 2026 |
| Aarham Ltd | Wholesale & retail | 2025 |
| Aarifah Collection Ltd | Wholesale & retail | 2024 |
| Aariya Limited | Wholesale & retail | 2014 |
| Aariz Estates Ltd | Real estate | 2025 |
| Aariz Housing Limited | Real estate | 2024 |
| Aarj Properties Ltd | Real estate | 2021 |
| Aarjay Trading Limited | Wholesale & retail | 2018 |
| Aarna Private Limited | Information & communication | 2015 |
| Aarnav Limited | Health & social care | 2023 |
| Aarnoldo Limited | Wholesale & retail | 2025 |
| Aaron Douglas TM Ltd | Construction | 2024 |
| Aaron M Logistics Ltd | Transport & logistics | 2019 |
| Aaron Probyn Limited | Professional & scientific | 2015 |
| Aaron Supported Housing Ltd | Real estate | 2025 |
| Aaron&Jay Properties Ltd | Real estate | 2023 |
| Aaronite Limited | Information & communication | 2020 |
| Aarons Catering Ltd | Hospitality | 2026 |
| Aaron’S Taxi Crewe Ltd | Transport & logistics | 2023 |
| Aarrian Ltd | Professional & scientific | 2025 |
| Aarva Physiotherapy Ltd | Health & social care | 2022 |
| Aarya Foods Limited | Hospitality | 2015 |
| AAS Advisory Ltd | Professional & scientific | 2026 |
| AAS Freight Services Ltd | Transport & logistics | 2026 |
| AAS Pharma Ltd | Professional & scientific | 2017 |
| AAS Vehicle Solutions Limited | Manufacturing | 2014 |
| AAS2 Consultancy Ltd | Real estate | 2024 |
| Aash Limited | Wholesale & retail | 2018 |
| Aashi Property Investment Ltd | Real estate | 2025 |
| Aask Surveyors Ltd | Professional & scientific | 2025 |
| Aaswad Foods Ltd | Hospitality | 2021 |
| AAT Accountants and Management Consultants Ltd | Professional & scientific | 2022 |
| AAT Consultants Limited | Education | 2014 |
| AAT Interprises Limited | Wholesale & retail | 2026 |
| Aataxco Ltd | Professional & scientific | 2020 |
| AAU Accounting Ltd | Professional & scientific | 2020 |
| Aava Group Ltd | Wholesale & retail | 2023 |
| Aavi Construction Services Ltd | Construction | 2026 |
| AAW Building & Plastering Ltd | Construction | 2016 |
| Aawm Delivery Services Limited | Transport & logistics | 2021 |
| AAY ESS Props Limited | Real estate | 2026 |
| AAY Housing Ltd | Real estate | 2020 |
| Aayan Engineering Services Ltd | Construction | 2025 |
| Aayat Holdings Limited | Real estate | 2018 |
| Aaybee Trading Limited | Wholesale & retail | 2020 |
| AAZ Aero Engine Engineering Limited | Administrative & support | 2017 |
| AAZ Export Limited | Wholesale & retail | 2017 |
| AAZ Investment Properties Ltd | Real estate | 2025 |
| AAZ IT Ltd | Information & communication | 2019 |
| AAZ Mobiles Ltd | Wholesale & retail | 2023 |
| Aazain Limited | Wholesale & retail | 2023 |
| Aazam Enterprise UK Limited | Wholesale & retail | 2025 |
| Aazure Limited | Administrative & support | 2024 |
| AB & Co Commercials Ltd | Real estate | 2022 |
| AB & Co Investments Ltd | Real estate | 2020 |
| AB & Co Services Ltd | Administrative & support | 2024 |
| AB (Midlands) Other Services Limited | Other services | 2026 |
| AB (Midlands) Services Limited | Real estate | 2024 |
| AB Accounting and Taxation Services Limited | Professional & scientific | 2011 |
| AB and Co General Services Ltd | Hospitality | 2024 |
| AB Builders Merchant Ltd | Wholesale & retail | 2026 |
| AB Capital Investments Ltd | Real estate | 2024 |
| AB Carpentry Kitchens & Bathrooms Limited | Construction | 2018 |
| AB Corporation Ltd | Wholesale & retail | 2018 |
| AB Ecom Limited | Wholesale & retail | 2026 |
| AB Estates Limited | Real estate | 2023 |
| AB Eyecare Limited | Wholesale & retail | 2010 |
| AB Fire Safety Services Ltd | Other services | 2022 |
| AB Health Impact Ltd | Health & social care | 2026 |
| AB Housing Ltd | Construction | 2009 |
| AB Housing Solutions Ltd | Health & social care | 2026 |
| AB Hundal Enterprise Ltd | Hospitality | 2019 |
| AB Logistics and Transport Ltd | Wholesale & retail | 2024 |