| Aarav JAY Ltd | Real estate | 2021 |
| Aarc Ventures Limited | Financial services | 2023 |
| AB Urology Limited | Health & social care | 2018 |
| Abaan Medics Ltd | Health & social care | 2015 |
| Abacus Associates Consultants Limited | Professional & scientific | 2011 |
| Abacus Time Services Ltd | Professional & scientific | 2022 |
| Abbasian Limited | Health & social care | 2014 |
| Abdlolo Ltd | Health & social care | 2022 |
| Abel of Hertford Limited | Real estate | 2015 |
| Abelo Consulting Limited | Professional & scientific | 2024 |
| ABK UK Holdings Limited | Financial services | 2024 |
| ABK UK Trading Limited | Construction | 2024 |
| Ableme Ltd | Information & communication | 2018 |
| Abode Asset Management Limited | Administrative & support | 2018 |
| Abode Birmingham Limited | Construction | 2023 |
| Abode Contracting Limited | Real estate | 2014 |
| Abode Hanley Freehold Limited | Real estate | 2022 |
| Abode Hanley Limited | Real estate | 2022 |
| Abode Home Products Limited | Wholesale & retail | 2002 |
| Abode Huddersfield Limited | Real estate | 2022 |
| Abode Keele Limited | Real estate | 2014 |
| Abode Leatherworks Limited | Real estate | 2024 |
| Abode Manchester 3 Ltd | Administrative & support | 2018 |
| Abode Manchester 4 Ltd | Administrative & support | 2019 |
| Abode Manchester 5 Ltd | Administrative & support | 2019 |
| Abode Manchester Holdings Limited | Administrative & support | 2018 |
| Abode Manchester Limited | Real estate | 2016 |
| Abode the Villas Ltd | Construction | 2018 |
| Abode the Villas Management Company Limited | Administrative & support | 2024 |
| Abode Wireworks Limited | Real estate | 2023 |
| Abood Medical Reporting Ltd | Health & social care | 2021 |
| Abood Treatment Centres Ltd | Health & social care | 2022 |
| ABR Toys & Stationary Limited | Wholesale & retail | 2016 |
| Abramis Limited | Real estate | 2008 |
| Absolute Eco Ltd | Professional & scientific | 2018 |
| Absolute Media Limited | Information & communication | 2026 |
| ABSONE1 Ltd | Administrative & support | 2022 |
| Absurd Holdings Limited | Administrative & support | 2018 |
| Absurd Hospitality Limited | Hospitality | 2022 |
| Absurd Ltd | Information & communication | 2016 |
| Absurd Stays Limited | Real estate | 2020 |
| AC Surgical Limited | Health & social care | 2025 |
| Acacia Accountancy Limited | Real estate | 2019 |
| Academia Manchester United Ltd | Professional & scientific | 2025 |
| Academy for Dentists Limited | Health & social care | 2025 |
| ACB Orthopaedics Limited | Health & social care | 2023 |
| Acca Property Group Ltd | Real estate | 2021 |
| Acca Property Group Newco Ltd | Real estate | 2022 |
| Accelerate Website Agency Ltd | Information & communication | 2013 |
| Accelerated Ventures Ltd | Administrative & support | 2024 |
| Access Utilities (UK) Limited | Water & waste | 2012 |
| Accounts by Alison Limited | Professional & scientific | 2025 |
| Accounts Tax Solutions Limited | Professional & scientific | 2006 |
| Accucounts Pro Ltd | Professional & scientific | 2025 |
| Accumulative Limited | Financial services | 2017 |
| Acemed Enterprise Ltd | Education | 2023 |
| Acestone Limited | Financial services | 2019 |
| Achyut Technologies Ltd | Information & communication | 2021 |
| Acorn 31 Ltd | Administrative & support | 2024 |
| Acorn 33 Ltd | Wholesale & retail | 2025 |
| Acorn 34 Ltd | Professional & scientific | 2026 |
| Acorn Boar Lane Trust Limited Partnership | | 2004 |
| Acorn Capital Resources Limited | Professional & scientific | 2011 |
| Acorn Capital Support Services Ltd | Administrative & support | 2025 |
| Acorn High Income Limited Partnership | | 2010 |
| Acorn Income & Capital Growth Limited Partnership | | 2010 |
| Acorn Jewellery Ltd | Wholesale & retail | 2026 |
| Acorn Regency Court Limited Partnership | | 2005 |
| Acorn Scipion Limited Partnership | | 2010 |
| Acorn West Five Centre Limited Partnership | | 2005 |
| Acroft Digital Ltd | Professional & scientific | 2024 |
| Actech Recruitment Limited | Administrative & support | 2020 |
| Activeage UK CIC | Health & social care | 2024 |
| Actualise Business Psychology Limited | Professional & scientific | 2003 |
| Actuwize Ltd | Professional & scientific | 2008 |
| Acumen Accountancy Solutions Ltd | Professional & scientific | 2008 |
| Acute Properties Limited | Real estate | 2014 |
| ACW Orthopaedics Limited | Health & social care | 2019 |
| Adam Dobson Ltd | Health & social care | 2016 |
| Adam IT Consultancy Ltd | Information & communication | 2022 |
| Adamson & Adamson Limited | Information & communication | 2012 |
| Adansonia Consulting Limited | Health & social care | 2018 |
| Adapt Global Group UK Limited | Wholesale & retail | 2025 |
| Adaptive Challenge Ltd | Arts & recreation | 2017 |
| ADD on TV Limited | Information & communication | 2014 |
| ADH Services (Electrical) Limited | Construction | 2014 |
| Adhd Specialist Limited | Health & social care | 2021 |
| Adincentives Ltd. | Extraterritorial | 2010 |
| Adlington Developments Limited | Construction | 2025 |
| Adnova Clinic Limited | Health & social care | 2021 |
| Adsaro Consulting Limited | Administrative & support | 2023 |
| Advance Leap Limited | Information & communication | 2016 |
| Advance Test Management Ltd | Real estate | 2011 |
| Advanced Design & Detailers Ltd | Professional & scientific | 2024 |
| Advanced Medicine Limited | Professional & scientific | 2010 |
| Advanced Skin Limited | Health & social care | 2015 |
| Adwradiology Limited | Health & social care | 2023 |
| AE Solutions (AES) Ltd | Construction | 2023 |
| AEC Advice Limited | Professional & scientific | 2021 |
| Aerohalo Innovations Ltd | Professional & scientific | 2025 |