| Apex Wholesale (NW) Ltd | Wholesale & retail | 2025 |
| Apex Windows and Doors PVC Ltd | Construction | 2024 |
| Apex Xtreme EV Ltd | Wholesale & retail | 2026 |
| Apexmart Traders Ltd | Wholesale & retail | 2022 |
| APG Construction Ltd | Construction | 2023 |
| API (Northwest) Limited | Real estate | 2002 |
| API (NW) Limited | Real estate | 2025 |
| Apical Cardiology Ltd | Health & social care | 2025 |
| Apis Software Solutions Limited | Information & communication | 2021 |
| Apitech Solutions Ltd | Professional & scientific | 2021 |
| APL Accountants (North) Limited | Professional & scientific | 2021 |
| Aplite Limited | Real estate | 2010 |
| Aplus Apartments Ltd | Real estate | 2008 |
| APM Sourcing Limited | Wholesale & retail | 2014 |
| Apnr Management Ltd | Wholesale & retail | 2019 |
| Apo&Jen Transport Limited | Transport & logistics | 2025 |
| Apogee Associated Properties Ltd | Real estate | 2020 |
| Apogee Tax & Compliance Limited | Financial services | 2013 |
| Apollo Acquisitions Ltd | Wholesale & retail | 2024 |
| Apollo Healthcare & Training Ltd | Public administration | 2020 |
| Apollo Legal Services Limited | Professional & scientific | 2013 |
| Apollo Tria Tattooing Ltd | Other services | 2023 |
| Apollos Boxing Limited | Arts & recreation | 2020 |
| Apollo’S Community CIC | Arts & recreation | 2026 |
| Apoorva Medical Services Limited | Health & social care | 2020 |
| Apparel Imports Ltd | Wholesale & retail | 2018 |
| Appeel Ltd | Construction | 1998 |
| Apple Energy Solutions Limited | Administrative & support | 2025 |
| Appleby & Wood Limited | Professional & scientific | 1984 |
| Appleby Books Ltd | Professional & scientific | 2011 |
| Appledore Advisory Limited | Professional & scientific | 2025 |
| Applegarth Property Group Ltd | Real estate | 2020 |
| Applestore Limited | Construction | 1983 |
| Appleton Piling Limited | Construction | 2005 |
| Appletree Media Limited | | 2007 |
| Appliances Mart Ltd | Wholesale & retail | 2026 |
| Appliances Online Ltd | Financial services | 2012 |
| Application Specific Technologies Limited | Information & communication | 2005 |
| Applocum Limited | Information & communication | 2016 |
| Applocum Nursing Limited | Administrative & support | 2018 |
| Applocum Staffing Limited | Administrative & support | 2018 |
| Apply for Eco Ltd | Construction | 2024 |
| Appt-Health Ltd | Information & communication | 2017 |
| Appt-Health Social Impact Ltd | Information & communication | 2021 |
| APS Architectural Joinery Limited | Construction | 2004 |
| APS Countryside Contracts Limited | Agriculture & fishing | 2003 |
| APT Accountancy Ltd | Extraterritorial | 2005 |
| Aptus Group Limited | Financial services | 2012 |
| Aptus Limited | Extraterritorial | 2012 |
| Aptus Utilities Limited | Construction | 2010 |
| Apvh Hirani Ltd | Real estate | 2023 |
| APW Formwork Limited | Construction | 2014 |
| APX Prime Health Ltd | Health & social care | 2025 |
| APX Prime Solutions Ltd | Real estate | 2025 |
| APY Property Maintenance Ltd | Construction | 2023 |
| AQ Services NW Ltd | Construction | 2019 |
| AQA Aesthetics Ltd | Health & social care | 2012 |
| Aqan Enterprise Ltd | Wholesale & retail | 2021 |
| Aqcreations Ltd | Wholesale & retail | 2026 |
| Aqijav Ltd | Wholesale & retail | 2025 |
| AQL Electrical Limited | Construction | 2021 |
| AQL International Ltd | Wholesale & retail | 2013 |
| AQS Clothing Ltd | Wholesale & retail | 2025 |
| Aqsa Enterprises Limited | Extraterritorial | 2017 |
| Aqsa Food Store Ltd | Wholesale & retail | 2025 |
| Aqsa Halal Meat Ltd | Wholesale & retail | 2026 |
| Aqsa Meat Halal Ltd | Wholesale & retail | 2026 |
| Aqsa Meat Ltd | Manufacturing | 2022 |
| AQT Property Limited | Real estate | 2020 |
| Aqua Glass Mirror Ltd | Manufacturing | 2025 |
| Aqua Kinetics Therapies Limited | Other services | 2022 |
| Aqua Realty Management & Contractors Limited | Administrative & support | 2012 |
| Aqua ROD Drain Services (North West) Limited | Administrative & support | 2005 |
| Aquaint Ltd | Information & communication | 2021 |
| Aqualeo Holdings Limited | Real estate | 2025 |
| Aquarius Fitted Bedrooms & Kitchens Limited | Wholesale & retail | 2006 |
| AQUATECH2O Ltd | Manufacturing | 2012 |
| Aquatic Kingdom Ltd | Wholesale & retail | 2016 |
| Aquila Shelters Limited | Administrative & support | 1986 |
| Aquilamora Limited | Administrative & support | 2022 |
| Aquilo Refrigeration Limited | Wholesale & retail | 2019 |
| Aquilon Holdings Limited | Financial services | 2025 |
| Aquilon Projects Limited | Construction | 2021 |
| Aquilon Windows Limited | Construction | 2026 |
| Aqura Bioscience Ltd | Professional & scientific | 2025 |
| AR & Co Accountants Limited | Professional & scientific | 2025 |
| AR Autohandel Ltd | Wholesale & retail | 2024 |
| AR LDS Warrington Ltd | Hospitality | 2022 |
| AR Lift Services UK Ltd | Professional & scientific | 2025 |
| AR MOT Centre Ltd | Wholesale & retail | 2023 |
| AR Munshi Ltd | Wholesale & retail | 2025 |
| AR Pensions Ltd | Financial services | 2019 |
| AR Property NW Limited | Real estate | 2024 |
| AR Property Solutions Ltd | Financial services | 2023 |
| AR Property Ventures Limited | Administrative & support | 2020 |
| AR Pure Stock Ltd | Wholesale & retail | 2026 |
| AR Rahmann Limited | Administrative & support | 2024 |
| AR Recovery & Logistics Ltd | Transport & logistics | 2026 |
| AR Recovery Service Ltd | Transport & logistics | 2025 |
| AR Roofing Contractors Ltd | Construction | 2020 |