| Arkbnb Ltd | Real estate | 2026 |
| Arkenstone Developments Ltd | Real estate | 2017 |
| Armani Enterprize Ltd | Wholesale & retail | 2025 |
| Armstrong Rose Property Company Ltd | Real estate | 2024 |
| Arooj Clothing Limited | Wholesale & retail | 2018 |
| Arrtp Limited | Hospitality | 2018 |
| Arsen Luka Ltd | Transport & logistics | 2025 |
| Art Skateparks Ltd | Construction | 2018 |
| Arthouse Hairdressing Ltd | Other services | 2024 |
| Arthouse Professional Ltd | Wholesale & retail | 2022 |
| Artone Holdings Ltd | Financial services | 2024 |
| Arts Lancashire Ltd | Administrative & support | 2025 |
| Aryan Discount Ltd | Wholesale & retail | 2024 |
| ASA Real Estate (London) Limited | Real estate | 2026 |
| Asbestos Control Solutions Limited | Construction | 2007 |
| Ascend Building Renovations Ltd | Construction | 2026 |
| Asclepius Medicolegal Ltd | Professional & scientific | 2022 |
| ASF Homes Ltd | Real estate | 2023 |
| ASH & Beech Developments Ltd | Real estate | 2020 |
| Ashcorp Pubs Ltd | Hospitality | 2023 |
| Ashfield Court (Anderton) Management Company Limited | Real estate | 2005 |
| Ashfield Mill Group Limited | Manufacturing | 2022 |
| Ashton Furniture Ltd | Manufacturing | 2026 |
| Ashworth & Greenwood Limited | | 1974 |
| Ashworth 2014 Limited | Transport & logistics | 2015 |
| Ashworth Moulds Payroll Services Limited | Administrative & support | 2019 |
| Asim Optical Limited | Health & social care | 2024 |
| Asimakop 2025 Limited | Hospitality | 2025 |
| Aslam Sons Limited | Wholesale & retail | 2019 |
| Aspirations Consultancy and Enterprises Ltd | Extraterritorial | 2015 |
| Aspire Accounting & Tax AID Ltd | Professional & scientific | 2024 |
| Aspire Burnley CIC | Education | 2025 |
| Aspire Wills and Estates Ltd | Real estate | 2021 |
| Aspire Wills Limited | Other services | 2017 |
| Assam Aroma Limited | Manufacturing | 2019 |
| Assess and Align CIC | Financial services | 2025 |
| Asset Transport Services Limited | Transport & logistics | 2018 |
| Associated Wellbeing Limited | Public administration | 2018 |
| Association of Church Accountants and Treasurers Corporate Trustee Limited | Other services | 2016 |
| Astonish Ltd | Wholesale & retail | 2025 |
| Astral Property Management Ltd | Real estate | 2020 |
| Astrum Property Group Ltd | Hospitality | 2019 |
| ATA Global Resource Ltd | Wholesale & retail | 2025 |
| ATD Services Ltd | Health & social care | 2024 |
| Athol Convenience Store Ltd | Wholesale & retail | 2023 |
| Atif H Storage Ltd | Transport & logistics | 2025 |
| Atkinsons of Manchester Ltd | Manufacturing | 2024 |
| Atlantic Tool Leasing U.K. Limited | Professional & scientific | 1996 |
| Atlas Environmental Services Ltd | Professional & scientific | 2019 |
| Atlas Scaffolding NW Ltd | Construction | 2025 |
| Atomicflee Ltd | Information & communication | 2025 |
| ATP Catering Ltd | Hospitality | 2019 |
| ATR Equity Group Ltd | Real estate | 2025 |
| ATR Optical Group Ltd | Wholesale & retail | 2026 |
| Attwood Digital Ltd | Wholesale & retail | 2020 |
| Audas Group (EOT) Limited | Financial services | 2023 |
| Audas Group Limited | Construction | 2012 |
| Audas Project Management Limited | Construction | 2007 |
| Audio Circuits UK Ltd | Manufacturing | 2020 |
| Audio Correction Ltd | Manufacturing | 2022 |
| AUM Law Ltd | Professional & scientific | 2025 |
| Auon Construction Ltd | Construction | 2016 |
| Aura Hotels Limited | Hospitality | 2025 |
| Aurelian Advisory Ltd | Professional & scientific | 2025 |
| Aurevia Marketing Ltd | Professional & scientific | 2025 |
| Aurora Homes NW Ltd | Real estate | 2020 |
| Austin Park Holdings Limited | Transport & logistics | 2003 |
| Austin Wilkinson & Sons Limited | Transport & logistics | 1961 |
| Austin Wilkinson (Holdings) Limited | Professional & scientific | 2020 |
| Austria-Holdings UK Ltd | Arts & recreation | 2018 |
| Auto Direct (NW) Ltd | Wholesale & retail | 2022 |
| Autocraft Accident Repair Centre Limited | Wholesale & retail | 2008 |
| Autoglanzdetailing Ltd | Wholesale & retail | 2025 |
| Automotive Detailing Ltd | Other services | 2025 |
| Automotive Tools & Supplies Limited | Wholesale & retail | 2002 |
| Autorobotics Ltd | Professional & scientific | 2017 |
| Auxilione Ltd | Administrative & support | 2022 |
| Auxima Ltd | Professional & scientific | 2024 |
| Avalon Town Planning Ltd | Professional & scientific | 2018 |
| Avanti Pest Solutions Ltd | Administrative & support | 2022 |
| Avaris Cycling Limited | Wholesale & retail | 2022 |
| Avon Electrical Ltd | Construction | 2000 |
| AVS Estates Limited | Construction | 2010 |
| AW Accounting and Tax NW Limited | Professional & scientific | 2026 |
| AW Business Services Limited | Administrative & support | 2018 |
| AWA Accountants Ltd | Professional & scientific | 2008 |
| Awais Consultancy Ltd | Professional & scientific | 2024 |
| Awali Properties Ltd | Real estate | 2022 |
| Awdigital Ltd | Information & communication | 2025 |
| Axawest Limited | Real estate | 2007 |
| AXE and Seax Ltd | Manufacturing | 2021 |
| Axess Scaffolding Limited | Construction | 2002 |
| Axiom Engineering Ltd | Manufacturing | 2004 |
| Axis Archi Design Ltd | Professional & scientific | 2025 |
| AYA Interiors Ltd | Wholesale & retail | 2026 |
| Aydn Ltd | Wholesale & retail | 2025 |
| Ayla Consultancy Ltd | Professional & scientific | 2025 |
| Ayla Daoud Holdings Ltd | Financial services | 2024 |
| AYM Burnley Ltd | Hospitality | 2022 |
| Ayra Financial Group Limited | Real estate | 2020 |