| ASH Travels Ltd | Administrative & support | 2020 |
| ASH Tree Residents Association Limited | Households | 1983 |
| Ashaa Café Limited | Hospitality | 2025 |
| Ashaaz Ltd | Wholesale & retail | 2021 |
| Ashburton Creative Ltd | Professional & scientific | 2025 |
| Ashby's Adventure Trails and Treks Limited | Arts & recreation | 2022 |
| Ashcroft Properties Limited | Real estate | 2020 |
| Asher Excellent Ltd | Public administration | 2021 |
| Asher Health and Consultancy Ltd | Professional & scientific | 2023 |
| Asherry UK Limited | Wholesale & retail | 2025 |
| Ashford Car Sales Ltd | Wholesale & retail | 2019 |
| Ashford Superstore Limited | Wholesale & retail | 2018 |
| Ashjam Limited | Administrative & support | 2022 |
| Ashlawn Developments Limited | Construction | 2022 |
| Ashleigh Court Private Client Wealth Management Limited | Financial services | 2008 |
| Ashley Hydrographic Ltd | Professional & scientific | 2019 |
| Ashleywreford Limited | Professional & scientific | 2006 |
| Ashmag Cleaning and Treating Private Limited | Administrative & support | 2025 |
| Ashridge Lofts Limited | Construction | 2004 |
| Ashtatt Ltd | Health & social care | 2024 |
| Ashtead Tennis Players Club Ltd | Arts & recreation | 2012 |
| Ashtutorials Ltd | Education | 2023 |
| Ashvin Ltd | Wholesale & retail | 2021 |
| Ashvine Management Ltd | Extraterritorial | 2015 |
| Ashwarun Heritage Ltd | Health & social care | 2009 |
| Ashwin Technology Ltd | Construction | 2019 |
| Ashwood Properties (Coventry) Limited | Real estate | 1974 |
| Ashwood Ventures Ltd | Real estate | 2026 |
| Asia Holdings Ltd. | Wholesale & retail | 2020 |
| Asia Trade Partners Ltd | Extraterritorial | 2019 |
| Asian Entertainments UK Ltd | Arts & recreation | 2011 |
| Asian Fresh Fish (PVT) Limited | Wholesale & retail | 2024 |
| Asian Halal Food Ltd | Hospitality | 2025 |
| Asian Mart Ltd | Wholesale & retail | 2025 |
| Asian Music Circuit Limited | Education | 1991 |
| Asiana Cuisine Limited | Hospitality | 2016 |
| Asiana Dining Coventry Ltd | Hospitality | 2020 |
| Asianpearl Mart Ltd | Wholesale & retail | 2021 |
| Asif Liaqat Event Ltd | Hospitality | 2025 |
| Asimilia Limited | Health & social care | 2011 |
| Asiri Perera Worldwide Limited | Administrative & support | 2013 |
| Asis UK Inspection and Certification Ltd | Professional & scientific | 2026 |
| ASJ Home Improvement Ltd | Construction | 2024 |
| ASJ Software Services Ltd | Information & communication | 2023 |
| ASK 360 Constructions & Renovations Ltd | Construction | 2025 |
| ASK 8 Recruitment Ltd | Administrative & support | 2026 |
| ASK 8 Transport Ltd | Transport & logistics | 2026 |
| ASK Clive Ltd | Professional & scientific | 2025 |
| ASK Investment Management Ltd | Extraterritorial | 2013 |
| ASK Mother Ltd | Information & communication | 2023 |
| Askassist Ltd | Administrative & support | 2021 |
| Aske Ltd | Real estate | 2017 |
| Askew & Callaway Limited | Real estate | 2018 |
| Askews (Solihull) Limited | Professional & scientific | 2022 |
| Askews Legal LLP | | 2010 |
| Askews Risk Management Limited | Financial services | 2013 |
| Askonet 1 Limited | Wholesale & retail | 2025 |
| Asks Packaging Ltd | Administrative & support | 2025 |
| Asliaq Limited | Administrative & support | 2025 |
| ASM Digital Engineering PVT Ltd | Professional & scientific | 2009 |
| ASM Eclipse Limited | Wholesale & retail | 2019 |
| ASM Engineering PVT Ltd | Professional & scientific | 1994 |
| Asmeen Renovations Ltd | Professional & scientific | 2025 |
| ASN Mortgage Solutions Ltd | Financial services | 2020 |
| Asnain Ltd | Wholesale & retail | 2024 |
| ASP Health Innovation Limited | Information & communication | 2019 |
| ASP PVT Ltd | Wholesale & retail | 2026 |
| Aspect Construction (Midlands) Ltd | Construction | 2015 |
| Aspect Property Investments Limited | Real estate | 2016 |
| Aspects (Earlsdon) Limited | Construction | 2017 |
| Aspects (Moulton) Limited | Construction | 2017 |
| Aspects Total Training Limited | Education | 2017 |
| Aspen Apparel Limited | Professional & scientific | 2015 |
| Aspen Hill Holdings Limited | Financial services | 2025 |
| Aspho Surfacing Limited | Construction | 2011 |
| Aspice & Isolutions Limited | Professional & scientific | 2023 |
| Aspiracloud Assets Ltd | Extraterritorial | 2015 |
| Aspiracloud Ltd | Information & communication | 2011 |
| Aspiraction Ltd | Administrative & support | 2019 |
| Aspire Academy (Coventry) Ltd | Education | 2026 |
| Aspire Collective CIC | Wholesale & retail | 2024 |
| Aspire Contract Services Ltd | Construction | 2015 |
| Aspire Design Solutions Ltd | Professional & scientific | 2022 |
| Aspire House to Home Ltd | Hospitality | 2016 |
| Aspire Housing Support CIC | Health & social care | 2026 |
| Aspire Interiors Limited | Extraterritorial | 2006 |
| Aspire Logistics Solutions Limited | Transport & logistics | 2025 |
| Aspire Medical Appraisals Ltd | Health & social care | 2026 |
| Aspire Smart Properties Ltd | Real estate | 2023 |
| Aspirus Ventures Limited | Professional & scientific | 2010 |
| ASR Interiors Ltd | Wholesale & retail | 2009 |
| ASR Peformance Ltd | Wholesale & retail | 2024 |
| ASR Premier Properties Ltd | Real estate | 2021 |
| ASR Product Technologies Ltd | Manufacturing | 2022 |
| Asser Neurodiagnostic Ltd | Health & social care | 2026 |
| Assessity Ltd | Information & communication | 2020 |
| Assessmind Ltd | Administrative & support | 2025 |
| Asset Axis Limited | Wholesale & retail | 2026 |
| Asset Care and Support Ltd | Administrative & support | 2024 |
| Asset Zone Ltd | Wholesale & retail | 2024 |