| Axion Energy Limited | Extraterritorial | 2009 |
| Axion Engineering Limited | Extraterritorial | 2010 |
| Axion GT Services Ltd | Professional & scientific | 2026 |
| Axion Polymers Limited | Extraterritorial | 2007 |
| Axion Quantity Surveying Ltd | Professional & scientific | 2018 |
| Axion Recycling Ltd. | Water & waste | 2001 |
| Axis Architects Ltd | Professional & scientific | 2008 |
| Axis Associate Consultants Ltd | Administrative & support | 2009 |
| Axis Building & Maintenance Ltd | Construction | 2023 |
| Axis Business Park Liverpool Management Company Limited | Real estate | 2013 |
| Axis Climate Holdings Ltd | Financial services | 2025 |
| Axis Core Projects Limited | Construction | 2026 |
| Axis DC Ltd | Real estate | 2025 |
| Axis Fire and Security Ltd | Construction | 2021 |
| Axis Ground Screws Ltd | Construction | 2025 |
| Axis Mundi Consulting Ltd | Professional & scientific | 2018 |
| Axis Security Solutions Ltd | Administrative & support | 2026 |
| Axis Trade Limited | Wholesale & retail | 2021 |
| Axisbright Education Ltd | Education | 2025 |
| Axle Housing Ltd | Real estate | 2020 |
| Axlzs Properties Ltd | Real estate | 2022 |
| Axrik Ltd | Education | 2021 |
| AXY VET Exports Ltd | Professional & scientific | 2026 |
| Axyl Ltd | Health & social care | 2026 |
| AY Bank Limited | Financial services | 1980 |
| AY Coffee Ltd | Wholesale & retail | 2022 |
| AY Maintenance & Electrical Ltd | Construction | 2026 |
| AY Training & Consultancy Ltd | Professional & scientific | 2025 |
| AY Ventures Limited | Other services | 2017 |
| AYA Cars Sale Ltd | Wholesale & retail | 2022 |
| Ayad Liverpool Ltd | Information & communication | 2023 |
| Ayah's Minimarket Limited | Wholesale & retail | 2023 |
| Aybuild Limited | Construction | 2025 |
| Aycaramba Limited | Arts & recreation | 2022 |
| Ayekoloye Medical Ltd | Health & social care | 2009 |
| Ayesha Fabrics Ltd | Wholesale & retail | 2025 |
| Aygunes 21 Limited | Real estate | 2025 |
| Ayham’S Kitchen Limited | Hospitality | 2025 |
| Ayitey Services Ltd | Information & communication | 2019 |
| Ayla LEE Limited | Hospitality | 2026 |
| Aylafoods Ltd | Hospitality | 2025 |
| Aylin&Edan Ltd | Transport & logistics | 2025 |
| Aylsa Limited | Wholesale & retail | 2025 |
| Aymaan Limited | Health & social care | 2017 |
| Ayra Business Services Ltd | Wholesale & retail | 2025 |
| Ayre Offshore Wind Farm Limited | Construction | 2022 |
| Ayrton Saunders (Development) Limited | Professional & scientific | 2019 |
| Ayrton Saunders and Company Ltd | Manufacturing | 2010 |
| Ayrton Saunders Inhalation Limited | Professional & scientific | 2019 |
| Ayspot Holdings Ltd | Wholesale & retail | 2024 |
| Aytac Yilmaz Mobile Chef Ltd | Hospitality | 2021 |
| Ayubowan (Glossop) Ltd | Hospitality | 2019 |
| Ayuda Group Ltd | Administrative & support | 1992 |
| Ayuthaya Restaurants Ltd | Other services | 2014 |
| Ayyappa Limited | Information & communication | 2016 |
| AZ Contracting Ltd | Transport & logistics | 2015 |
| Az-Zumar Ltd | Hospitality | 2024 |
| Azacus Limited | Real estate | 2016 |
| Azad NW Ltd | Hospitality | 2024 |
| Azad Telecom Ltd | Real estate | 2022 |
| Azadi Properties Liverpool Ltd | Real estate | 2024 |
| Azadirachta Ltd | Information & communication | 2026 |
| Azal Limited | Hospitality | 2018 |
| Azalea Court (Liverpool) Management Company Limited | Professional & scientific | 1982 |
| Azbar Limited | Hospitality | 2025 |
| Azimuth Dockside Properties Ltd | Real estate | 2025 |
| Azimuth MEP Consulting Ltd | Professional & scientific | 2020 |
| Azimuth Property Development Ltd | Real estate | 2017 |
| Aziz Property International Ltd | Real estate | 2025 |
| Azlan Real Estate Ltd | Real estate | 2024 |
| Azlt One Ltd | Professional & scientific | 2023 |
| Azmn Building Ltd | Construction | 2026 |
| Azmpu Limited | Wholesale & retail | 2025 |
| Azra 1 Company Limited | Wholesale & retail | 2021 |
| Azra Health Ltd | Information & communication | 2026 |
| Aztec Fire Doors & Frames Holdings Limited | Financial services | 2024 |
| Aztec Interiors (Northern) Limited | Construction | 1988 |
| Aztec Interiors Group Limited | Financial services | 2024 |
| Aztec Interiors Holdings Ltd | Financial services | 2021 |
| Aztec Security Services Limited | Other services | 2008 |
| Aztek Luxury Clothing Limited | Wholesale & retail | 2025 |
| Azul Go Ltd | Hospitality | 2026 |
| Azul Monkey Catering Ltd | Hospitality | 2022 |
| Azuo Property Ltd | Real estate | 2025 |
| Azure Civils Ltd | Construction | 2025 |
| Azure FM Limited | Real estate | 2021 |
| Azure Properties North West Limited | Real estate | 2024 |
| Azure Rail Ltd | Construction | 2025 |
| Azure Technology Limited | Information & communication | 2017 |
| Azure Telecoms Ltd | Construction | 2025 |
| Azure Utilities Ltd | Construction | 2023 |
| Azure Water Ltd | Construction | 2025 |
| Azvex Brewing Company Ltd | Manufacturing | 2020 |
| Azvex Property Limited | Construction | 2026 |
| AZZ Co Consulting Ltd | Construction | 2025 |
| AZZ Properties Ltd | Real estate | 2025 |
| Azzal Caffe Ltd | Hospitality | 2022 |
| Azzs & Ozzs PVT Ltd | Wholesale & retail | 2016 |
| Azzurro Contractors Ltd | Other services | 2017 |
| B & B Civils Ltd | Construction | 2022 |