| 12 Steps Brewery Ltd | Manufacturing | 2020 |
| 18 Tradings Ltd | Real estate | 2019 |
| 1823 Deus Ltd | Financial services | 2025 |
| 1823DEUS Software Technologies Ltd | Information & communication | 2026 |
| 1HC Investments Ltd | Real estate | 2024 |
| 20:20 Optical Warehouse Limited | Health & social care | 2003 |
| 24/7 Fire and Security Protection Ltd | Administrative & support | 2018 |
| 24HRS Ltd | Wholesale & retail | 2015 |
| 3K Transport International Haulage Ltd | Transport & logistics | 2025 |
| 3TNCK Limited | Transport & logistics | 2024 |
| 4201 / DS17 Limited | Real estate | 2021 |
| 4BZ Ltd | Wholesale & retail | 2026 |
| 531 Parts Ltd | Wholesale & retail | 2018 |
| 5750 Components Limited | Manufacturing | 1994 |
| 7 Smart Deals & Logistics UK Ltd | Transport & logistics | 2026 |
| 799 Properties Limited | Real estate | 2023 |
| 7ELOGICS Ltd | Information & communication | 2025 |
| 88 Fitness Education and Training LP | | 2022 |
| A Care SOLUTION5 Ltd | Health & social care | 2022 |
| A Dadhiwala Limited | Health & social care | 2010 |
| A G Stout Optometric Services Limited | Health & social care | 2006 |
| A Kelbie Motors Ltd | Wholesale & retail | 2018 |
| A Little Wilde Ltd | Real estate | 2024 |
| A P M Design Ltd | Professional & scientific | 2002 |
| A T & J B Roberts Limited | Health & social care | 2004 |
| A&N (Thornbury) Limited | Wholesale & retail | 2026 |
| A&N (W&D) Limited | Wholesale & retail | 2026 |
| A&N (Yate) Limited | Wholesale & retail | 2026 |
| A-Line Motors Limited | Wholesale & retail | 2026 |
| A.S Commercials Ltd | Wholesale & retail | 2022 |
| A1 Quality Paving & Drives Ltd | Construction | 2022 |
| A1 Quality Paving Solutions Ltd | Construction | 2022 |
| AA Property and Estates Limited | Real estate | 2025 |
| Aailaa & Co Ltd | Wholesale & retail | 2023 |
| AAM Property Management Ltd | Real estate | 2023 |
| Aaron Optometrists Limited | Health & social care | 2009 |
| AAU Medical Ltd | Health & social care | 2024 |
| AB Hearing Limited | Wholesale & retail | 2020 |
| AB Legal Services Ltd | Other services | 2025 |
| AB RENOV8 Ltd | Construction | 2025 |
| ABJ Holdings Limited | Financial services | 2019 |
| Abode Services Ltd | Real estate | 2017 |
| ABP Contracting Ltd | Professional & scientific | 2025 |
| Abra 1 Ltd | Wholesale & retail | 2023 |
| Abra 3 Ltd | Other services | 2003 |
| Abra 9 Ltd | Wholesale & retail | 1999 |
| Abson Office Furniture Ltd | Manufacturing | 2023 |
| ACCELER8 Media Limited | Professional & scientific | 2014 |
| Accessory Boxx Limited | Wholesale & retail | 2018 |
| Accrington Gardens and Allotments Limited | Extraterritorial | 1989 |
| Accrington UK Ltd | Construction | 2019 |
| Accura Joinery and Building Limited | Construction | 2017 |
| Ace Cars NW Ltd | Wholesale & retail | 2025 |
| Acorn Door Systems Limited | Manufacturing | 2000 |
| Acorns of Lancashire Accrington Limited | Other services | 2024 |
| ACS Contracts Ltd | Construction | 2026 |
| ACS Corporate Management Limited | Administrative & support | 2014 |
| Action Plus Services | | 1999 |
| Acuminds CIC | Health & social care | 2026 |
| Acutance Consulting Ltd | Information & communication | 2012 |
| AD Living Ltd | Wholesale & retail | 2023 |
| Adam Hassan Limited | Wholesale & retail | 2025 |
| Adastra Property Management Ltd | Households | 2024 |
| Addbuild Contracts Ltd | Wholesale & retail | 2023 |
| Adhd Creative Solutions Limited | Health & social care | 2020 |
| Adlam and Coomber Optometrists Limited | Health & social care | 2010 |
| Adrian's Auto's Ltd | Real estate | 2023 |
| Advocasey Advisory Limited | Professional & scientific | 2025 |
| Aesthetic Artistry North West Ltd | Other services | 2020 |
| AFA Medical Ltd | Wholesale & retail | 2025 |
| AFB Flooring Solutions Limited | Construction | 2011 |
| Afinbe Ltd | Extraterritorial | 2023 |
| Afro Music Awards and Event Ltd | Arts & recreation | 2023 |
| After Dawn Ltd | Wholesale & retail | 2024 |
| AGC Properties Limited | Real estate | 2019 |
| Agnostic Solutions Limited | Information & communication | 2026 |
| AI Embedded Ltd | Information & communication | 2025 |
| Aima Living Ltd | Wholesale & retail | 2023 |
| Air Conditioning Solutions Ltd | Construction | 2020 |
| Aj's OUT of School Care Limited | Health & social care | 2017 |
| AJK NW Limited | Wholesale & retail | 2021 |
| AJM Tree Surgery & Landscaping Ltd | Administrative & support | 2023 |
| Ajmc Homes Ltd | Real estate | 2025 |
| AK Audiology Ltd | Wholesale & retail | 2019 |
| AK Casa Properties Ltd | Real estate | 2020 |
| Akay & Turnbull Visioncare Limited | Wholesale & retail | 2011 |
| Akira Brand Ltd | Wholesale & retail | 2017 |
| AL Mahdi Traders Ltd | Wholesale & retail | 2025 |
| Alan Brown Cars Limited | Wholesale & retail | 2010 |
| Alan O'Malley Ltd | Construction | 2018 |
| Alan Walsh (Engineering Services) Limited | | 1983 |
| Alcc Propertys Limited | Real estate | 2025 |
| Aldan Enterprises UK Ltd | Wholesale & retail | 2023 |
| Alexander Carus & Sons Limited | Real estate | 1906 |
| Alexander Gage Opticians Limited | Wholesale & retail | 1996 |
| Alexander Kobrin Limited | Health & social care | 2001 |
| Alexander RAO Limited | Health & social care | 2003 |
| Alexandersantosh Limited | Health & social care | 2018 |
| ALF the Mailman Ltd | Wholesale & retail | 2011 |
| ALI Sarfraz Ltd | Wholesale & retail | 2024 |