| Asirang Investments Limited | Real estate | 2024 |
| Asiya Limited | Real estate | 2023 |
| ASJ Plastering Services Ltd | Construction | 2022 |
| ASJ Solutions Limited | Information & communication | 2017 |
| ASK 1 Limited | Health & social care | 2011 |
| ASK Child and Educational Psychology Limited | Real estate | 2022 |
| ASK Consultants Ltd | Construction | 2004 |
| ASK Estates (Leicester) Ltd | Real estate | 2014 |
| ASK Expertise Limited | Administrative & support | 2021 |
| ASK Healthcare Logistics Limited | Health & social care | 2016 |
| ASK Legal Services Limited | Professional & scientific | 2021 |
| ASK Properties Midlands Limited | Real estate | 2022 |
| ASK Property Investments Leicester Limited | Real estate | 2024 |
| ASK Scaffolding Limted Ltd | Construction | 2023 |
| ASK UK Projects Ltd | Real estate | 2023 |
| ASK Washrooms Ltd | Construction | 2019 |
| ASK4CLEAN Ltd | Other services | 2022 |
| Askd Consultancy Limited | Information & communication | 2023 |
| Askh Developments Ltd | Construction | 2019 |
| Aski Digital Ltd | Wholesale & retail | 2019 |
| ASL Al-Karam International Ltd | Other services | 2021 |
| Asla Properties Limited | Real estate | 2026 |
| Aslam Lettings Ltd | Real estate | 2024 |
| Aslan (UK) Ltd | Professional & scientific | 1996 |
| Aslan Bistro Ltd | Hospitality | 2022 |
| Asli General Store Ltd | Wholesale & retail | 2023 |
| Asli Kullar Group Ltd | Real estate | 2008 |
| Asli Sweets & Food Factory Ltd | Manufacturing | 2025 |
| Asli Zaiqa Ltd | Hospitality | 2013 |
| ASM & Co Enterprises UK Limited | Wholesale & retail | 2020 |
| ASM (Leicester) Ltd | Manufacturing | 2026 |
| ASM (Leics) Limited | Wholesale & retail | 2023 |
| ASM (Swindon) Ltd | Manufacturing | 2024 |
| ASM Candy Store Ltd | Wholesale & retail | 2025 |
| ASM Distribution Transport (UK) Limited | Transport & logistics | 2013 |
| ASM Media Services Ltd | Professional & scientific | 2025 |
| ASM Tech Solutions Ltd | Wholesale & retail | 2025 |
| ASM8 Ltd | Wholesale & retail | 2025 |
| Asma Services Ltd | Transport & logistics | 2018 |
| Asma Summer Trips Ltd | Transport & logistics | 2026 |
| Asmaa Alhaddad Hmua Limited | Other services | 2025 |
| Asmaboutique Ltd | Wholesale & retail | 2026 |
| Asmal Coaches Ltd | Transport & logistics | 2025 |
| Asoi Sharazoor Ltd | Manufacturing | 2026 |
| ASP (Leicester) Ltd | Real estate | 2012 |
| ASP Enterprises Leicester Limited | Health & social care | 2014 |
| ASP UK Holdings Limited | Wholesale & retail | 2024 |
| ASP Wolverhampton Ltd | Professional & scientific | 2018 |
| Aspace Limited | Wholesale & retail | 2000 |
| Aspect by Design Architectural Services Limited | Professional & scientific | 2013 |
| Aspectus Financial Consultancy Limited | Hospitality | 2016 |
| Aspen Vitality Limited | Wholesale & retail | 2021 |
| Asphalt Plant Sales Limited | Extraterritorial | 2004 |
| Aspinal Wealth Limited | Financial services | 2016 |
| Aspinall Transport Ltd | Transport & logistics | 2014 |
| Aspiracore Ltd | Wholesale & retail | 2025 |
| Aspirational Abodes Ltd | Real estate | 2024 |
| Aspirational Electrical Services Ltd | Construction | 2025 |
| Aspire Holdings Limited | Real estate | 2022 |
| Aspire Homes (UK) Limited | Real estate | 2013 |
| Aspire Learning Partnership | Education | 2018 |
| Aspire Luxe Ltd | Real estate | 2025 |
| Aspire Mortgages (Leicester) Limited | Financial services | 2021 |
| Aspire Optics Ltd | Wholesale & retail | 2021 |
| Aspire PA Group Ltd | Professional & scientific | 2026 |
| Aspire Property Group Limited | Real estate | 2015 |
| Aspire Rise Care Ltd | Health & social care | 2025 |
| Aspirex Infotech Limited | Financial services | 2025 |
| Aspk Properties Ltd | Real estate | 2026 |
| Aspr Technology UK Limited | Information & communication | 2024 |
| Aspris (Arden) Limited | Health & social care | 2015 |
| Aspris (Thetford 1) Limited | Professional & scientific | 2009 |
| Aspris (Thetford 2) Limited | Administrative & support | 2009 |
| Aspris Bidco Limited | Financial services | 2021 |
| Aspris Care Central Limited | Education | 1995 |
| Aspris Care Leicestershire Limited | Education | 2001 |
| Aspris Care North West Limited | Health & social care | 2003 |
| Aspris Care West Limited | Education | 2003 |
| Aspris Children's Services Limited | Education | 2007 |
| Aspris Holdco Limited | Financial services | 2021 |
| Aspris Homes Limited | Education | 1994 |
| Aspris Midco Limited | Financial services | 2021 |
| Aspris New Education Services Limited | Education | 2010 |
| Asps (Leicester) Ltd | Real estate | 2012 |
| Asqad Ltd | Real estate | 2023 |
| Asqad Real Estate Ltd | Real estate | 2025 |
| ASR Builder (Leicester) Ltd | Construction | 2023 |
| ASR Ground Works Ltd | Construction | 2017 |
| ASR Lettings Limited | Real estate | 2022 |
| ASR Property Trading Limited | Real estate | 2020 |
| ASR Singh Limited | Real estate | 2023 |
| ASR Trucking Ltd | Transport & logistics | 2024 |
| Asra Construction Services Limited | Construction | 2009 |
| Asra Medical Services Ltd | Health & social care | 2023 |
| Asraria Foundation | Education | 2025 |
| Asrj Limited | Real estate | 2020 |
| Asrodrigues Ltd | Health & social care | 2023 |
| Assebel Ltd | Wholesale & retail | 2025 |
| Assembly Partnership Limited | Construction | 2025 |
| Assessment UK Ltd | Administrative & support | 2003 |