| Aurorait Innovations Ltd | Information & communication | 2025 |
| Aurra Mart Ltd | Wholesale & retail | 2024 |
| Aurum Bespoke Services Ltd | Professional & scientific | 2022 |
| Aurum Gold Healthcare Ltd | Wholesale & retail | 2025 |
| Aurum Holdings Limited | Real estate | 2019 |
| Ausjen Construction Ltd | Construction | 2024 |
| Ausjen Ltd | Construction | 2021 |
| Auspice Maria Ltd | Wholesale & retail | 2025 |
| Austen Global English Limited | Professional & scientific | 2026 |
| Auster Renewable Energy Limited | Professional & scientific | 2024 |
| Austere and Event Medical Solutions Limited | Health & social care | 2024 |
| Austere Property Limited | Administrative & support | 2010 |
| Austin Brougham Flooring Ltd | Construction | 2022 |
| Austin Guitars Ltd | Other services | 2016 |
| Austin MAY Associates Limited | Other services | 2008 |
| Austin Property Ltd | Real estate | 2018 |
| Austin-Smith:Lord Limited | Professional & scientific | 2019 |
| Autally’S World Limited | Hospitality | 2025 |
| Auteur Media Limited | Information & communication | 2017 |
| Auteur+Pr Ltd | Professional & scientific | 2025 |
| Authentic Connection Therapy Ltd | Health & social care | 2025 |
| Authentic Education and Training Limited | Education | 2017 |
| Authentic People Limited | Administrative & support | 2023 |
| Autism & Adhd Services North West CIC | Health & social care | 2025 |
| Autism Adventures Training CIC | Education | 2016 |
| Autism Embrace for Mothers and Children CIC | Public administration | 2024 |
| Auto Aids (Kirkby) Ltd | Wholesale & retail | 2007 |
| Auto Body Carsmetics Ltd | Wholesale & retail | 2025 |
| Auto Car Trader Limited | Wholesale & retail | 2025 |
| Auto Care Repair Centre Limited | Wholesale & retail | 2016 |
| Auto FIX Clinic Ltd | Wholesale & retail | 2025 |
| Auto Hand Spa Limited | Administrative & support | 2025 |
| Auto ID Systems Ltd. | Information & communication | 2001 |
| Auto Locksmith Liverpool Ltd | Other services | 2023 |
| Auto Management (North West) Limited | Manufacturing | 1997 |
| Auto Network (GB) Limited | Professional & scientific | 2010 |
| Auto Oltenita Ltd | Wholesale & retail | 2025 |
| Auto Only Limited | Education | 2019 |
| Auto Performance Parts Ltd | Wholesale & retail | 2025 |
| Auto Plas (North West) Limited | Wholesale & retail | 2011 |
| Auto Renew Limited | Wholesale & retail | 2015 |
| Auto Repair Centre(Wolverhampton) Ltd | Manufacturing | 2016 |
| Auto Revive Ltd | Wholesale & retail | 2025 |
| Auto Services (Formby) Ltd | Wholesale & retail | 2011 |
| Auto Solutions Automation Services Limited | Professional & scientific | 2017 |
| Auto Solutions North West Ltd | Wholesale & retail | 2025 |
| Auto Vehicle Sales Ltd | Other services | 2020 |
| Auto-Bod Logistics NW Ltd | Wholesale & retail | 2024 |
| Auto-Mo Limited | Extraterritorial | 2010 |
| Autocare Accident Repair Centre Ltd | Wholesale & retail | 2025 |
| Autoexpo Limited | Wholesale & retail | 2023 |
| Autofast Services Limited | Wholesale & retail | 2021 |
| Autofix MOT Ltd | Wholesale & retail | 2018 |
| Autokey Northwest Ltd | Wholesale & retail | 2025 |
| Autolens Ltd | Professional & scientific | 2025 |
| Automate & Tyres Ltd | Wholesale & retail | 2023 |
| Automated Perimeter Security Limited | Administrative & support | 2019 |
| Automaticos Limited | Administrative & support | 2018 |
| Automation Products & Systems Ltd | Manufacturing | 2010 |
| Automotive Performance Specialists Ltd | Wholesale & retail | 2024 |
| Automotivesalvage Ltd | Wholesale & retail | 2022 |
| Autonomy Investments Ltd | Financial services | 2016 |
| Autopus Ltd | Transport & logistics | 2024 |
| Autotrim (Merseyside) Limited | Wholesale & retail | 2012 |
| Autronix Ltd | Wholesale & retail | 2026 |
| Autumn Films Limited | Information & communication | 2016 |
| Autumn Live Limited | Professional & scientific | 2014 |
| AUX Digital Limited | Information & communication | 2023 |
| Auxilium Employment Services Ltd | Administrative & support | 2016 |
| AV Duct Limited | Construction | 2026 |
| AV Excavations Limited | Administrative & support | 2019 |
| AV Innovate Limited | Manufacturing | 2002 |
| AVA & Harrison Ltd | Other services | 2018 |
| AVA Liverpool Ltd | Hospitality | 2022 |
| AVA Pilates Studio Limited | Arts & recreation | 2017 |
| AVA Property Developments Ltd | Real estate | 2025 |
| AVA Wrexham 2 Ltd | Hospitality | 2023 |
| AVA Wrexham 3 Ltd | Hospitality | 2025 |
| AVA Wrexham Ltd | Hospitality | 2023 |
| Ava&Judy Ltd | Households | 2025 |
| Ava.Voilà Limited | Other services | 2024 |
| Avady Trading Limited | Wholesale & retail | 2018 |
| Availo Ltd | Information & communication | 2025 |
| Avalanche Consultancy Services Limited | Professional & scientific | 2016 |
| Avalanche Studios Group Limited | Information & communication | 2020 |
| Avalon (North West) Limited | Real estate | 2023 |
| Avalon Boutique Camping Ltd | Hospitality | 2023 |
| Avalon Developments Ltd | Extraterritorial | 2014 |
| Avana 1697 Limited | Professional & scientific | 2017 |
| Avant Capital Ltd | Real estate | 2026 |
| Avant Developments (Northern) Limited | Construction | 2014 |
| Avant Garde Solutions Limited | Other services | 2019 |
| Avant Gardens & Driveways Ltd | Administrative & support | 2021 |
| Avantgarde (Liverpool) Limited | Other services | 2011 |
| Avanti Accounting Limited | Professional & scientific | 2011 |
| Avanti Event Ltd | Hospitality | 2023 |
| Avanti Property Management Ltd | Real estate | 2015 |
| Avantii Ltd | Education | 2024 |
| Avarte Consultants INT Limited | Real estate | 2017 |
| Avasfacials Ltd | Wholesale & retail | 2025 |