| AS Build Solutions Ltd | Construction | 2017 |
| AS Bury Locksmith Ltd | Other services | 2019 |
| AS Coaching & Rehab Ltd | Health & social care | 2026 |
| AS Computing Specialists Ltd | Information & communication | 2024 |
| AS Deal Hub Ltd | Wholesale & retail | 2025 |
| AS DOT Ltd | Wholesale & retail | 2024 |
| AS Dwellings Ltd | Real estate | 2024 |
| AS Eccles Ltd | Real estate | 2024 |
| AS Electrical Services Ltd | Construction | 2025 |
| AS Global Services Ltd | Professional & scientific | 2026 |
| AS Global Ventures Ltd | Wholesale & retail | 2024 |
| AS Holdings of Leeds Limited | Wholesale & retail | 2021 |
| AS Investment Assets Limited | Real estate | 2017 |
| AS Investments SB Limited | Other services | 2019 |
| AS Kitchen Pro Ltd | Hospitality | 2026 |
| AS Living & Wellbeing Ltd | Wholesale & retail | 2025 |
| AS London Properties 2 Limited | Real estate | 2019 |
| AS London Properties 3 Limited | Real estate | 2020 |
| AS London Properties 4 Limited | Real estate | 2020 |
| AS London Properties Limited | Real estate | 2019 |
| AS Management Services Limited | Administrative & support | 2017 |
| AS Moden Wear Ltd | Wholesale & retail | 2025 |
| AS One Wellness Centre C.I.C. | Health & social care | 2025 |
| AS Photography Ltd | Professional & scientific | 2021 |
| AS Print Media Ltd | Manufacturing | 2023 |
| AS Properties (NW) Ltd | Hospitality | 2023 |
| AS Properties MCR Limited | Real estate | 2015 |
| AS Property & Developments Ltd | Real estate | 2025 |
| AS Smile NW Ltd | Health & social care | 2024 |
| AS Stretford Bidco Ltd | Construction | 2023 |
| AS Stretford Ltd | Construction | 2023 |
| AS Traders (MCR) Ltd | Wholesale & retail | 2020 |
| AS Travel (UK) Ltd | Administrative & support | 2013 |
| AS Tyrres Ltd | Wholesale & retail | 2025 |
| AS Vapes Limited | Wholesale & retail | 2025 |
| AS Vibes Ltd | Wholesale & retail | 2024 |
| AS Within Ltd | Health & social care | 2025 |
| As-C International Ltd | Wholesale & retail | 2024 |
| As-Nf IP Ltd | Other services | 2020 |
| As-Nf Ltd | Wholesale & retail | 2020 |
| As-Salaam Foundation | Health & social care | 2021 |
| As.G Nominees Limited | Financial services | 2018 |
| AS10 Rights Limited | Professional & scientific | 2026 |
| ASA 1 Limited | Real estate | 2021 |
| ASA Drilling Ltd | Administrative & support | 2012 |
| ASA Hub Ltd | Wholesale & retail | 2025 |
| ASA Investment Group Ltd | Real estate | 2018 |
| ASA Medical (NW) Limited | Health & social care | 2018 |
| ASA Optics Ltd | Health & social care | 2022 |
| ASA Partnership Limited | Other services | 2020 |
| ASA Traders Ltd | Wholesale & retail | 2020 |
| ASA97 Ltd | Wholesale & retail | 2024 |
| Asaa Limited | Wholesale & retail | 2021 |
| Asaad for Medical Services Ltd | Health & social care | 2025 |
| Asaam Ltd | Wholesale & retail | 2021 |
| Asaasapps Ltd | Information & communication | 2026 |
| Asacert UK Ltd | Professional & scientific | 2013 |
| Asad Manzoor Ltd | Wholesale & retail | 2023 |
| Asad Mart Ltd | Wholesale & retail | 2026 |
| Asad Properties Limited | Real estate | 2022 |
| Asad Sarwat Ltd | Wholesale & retail | 2025 |
| Asaf Property Ltd | Real estate | 2021 |
| Asahb Ltd | Health & social care | 2022 |
| Asai Property Ltd | Real estate | 2026 |
| Asak Global Limited | Transport & logistics | 2024 |
| Asake Innovations Ltd | Hospitality | 2024 |
| Asaker Consultant Limited | Professional & scientific | 2024 |
| Asakhiwe Ltd | Public administration | 2025 |
| Asal Transport Limited | Transport & logistics | 2024 |
| Asalah Almaale for Trading Ltd | Wholesale & retail | 2024 |
| Asami City Limited | Real estate | 2019 |
| Asanteman Union Greater Manchester CIC | Education | 2022 |
| Asap Aviation Services Limited | Administrative & support | 2008 |
| Asap Properties Limited | Real estate | 1998 |
| Asar Group Ltd | Real estate | 2026 |
| Asar Robotics and AI Ltd | Professional & scientific | 2022 |
| Asas Almemaar Ltd | Wholesale & retail | 2025 |
| Asas for International Trading Ltd | Water & waste | 2025 |
| Asat Properties Limited | Real estate | 2015 |
| Asav Holdings Ltd | Financial services | 2023 |
| Asav Investments Ltd | Financial services | 2023 |
| ASB Advisory Limited | Financial services | 2026 |
| ASB Arts Ltd | Arts & recreation | 2023 |
| ASB Consultants Limited | Professional & scientific | 2020 |
| ASB Education Ltd | Education | 2022 |
| Asbaud Ltd | Other services | 2023 |
| Asbcmcr Ltd | Arts & recreation | 2025 |
| Asbestos Reclamation Limited | | 1984 |
| Asbs Properties Ltd | Real estate | 2022 |
| Asbury GAS Services Ltd | Administrative & support | 2007 |
| Asbyt Ltd | Information & communication | 2017 |
| ASC Renewables Projects 2 Limited | Professional & scientific | 2015 |
| ASC Technology Limited | Wholesale & retail | 2019 |
| Ascencia Investment Management Limited | Financial services | 2004 |
| Ascend Business Company Ltd | Other services | 2021 |
| Ascend Co Studio Ltd | Other services | 2025 |
| Ascend Diagnostics Limited | Manufacturing | 2016 |
| Ascend Digital Solutions Ltd | Information & communication | 2020 |
| Ascend Legal & Financial Marketing Ltd | Professional & scientific | 2026 |
| Ascend Recovery UK Ltd | Health & social care | 2026 |