| Aarif Gija Co Ltd | Health & social care | 2019 |
| Aarna Handicrafts Limited | Wholesale & retail | 2019 |
| Aaron Holland's Fairground Attractions Limited | Arts & recreation | 2026 |
| Aarontraining Ltd | Education | 2020 |
| Aash Property Limited | Real estate | 2023 |
| Aasons Limited | Construction | 2022 |
| AAT Preston Ltd | Manufacturing | 2024 |
| Aauk Self Drive Ltd | Transport & logistics | 2018 |
| AAW Sports Therapy Ltd | Health & social care | 2019 |
| Aawlm Ltd | Information & communication | 2019 |
| Aayat Store Ltd | Wholesale & retail | 2023 |
| Aaytsel Ltd | Wholesale & retail | 2025 |
| AAZ Estates Limited | Real estate | 2018 |
| Aazeen Properties Ltd | Real estate | 2023 |
| AB & T Ltd | Wholesale & retail | 2020 |
| AB BRANDS4EVER Ltd | Wholesale & retail | 2023 |
| AB Change Solutions Limited | Information & communication | 2022 |
| AB Distribution NW Ltd | Wholesale & retail | 2017 |
| AB Global Business Ltd | Real estate | 2015 |
| AB Investment Projects Ltd | Households | 2021 |
| AB Joinery and Maintenance Ltd | Construction | 2023 |
| AB Organisation Ltd | Wholesale & retail | 2006 |
| AB Property Services(North West) Ltd | Households | 2022 |
| AB Sports Development CIC | Education | 2025 |
| AB Traders AJK Ltd | Wholesale & retail | 2025 |
| AB Training Services Limited | Other services | 2016 |
| AB Transport Logistics Ltd | Transport & logistics | 2025 |
| AB UK Services Limited | Other services | 2021 |
| AB Vehicle Logistics Ltd | Wholesale & retail | 2014 |
| ABA Travels Ltd | Administrative & support | 2020 |
| Abacco Limited | Professional & scientific | 2015 |
| Abacus (2018) Holdings Limited | Financial services | 2018 |
| Abacus (NW) Powder Coatings Limited | Administrative & support | 2007 |
| Abacus Joinery Ltd | Manufacturing | 2020 |
| Abacus Minibuses Ltd | Transport & logistics | 2010 |
| Abacus Play Limited | Education | 2016 |
| Abacus Sheet Metal Ltd | Administrative & support | 2011 |
| Abacusorange Limited | Wholesale & retail | 2014 |
| Abando Consulting Ltd | Health & social care | 2022 |
| ABB Enterprises Limited | Professional & scientific | 2019 |
| Abbalux Logistics Ltd | Transport & logistics | 2025 |
| Abbas Services Limited | Wholesale & retail | 2019 |
| Abbasi Medics Limited | Health & social care | 2009 |
| Abbasi’S Properties Limited | Real estate | 2024 |
| Abbey & Co Associates Limited | Professional & scientific | 2003 |
| Abbey Attachments Group Limited | Professional & scientific | 2026 |
| Abbey Attachments Holdings Limited | Professional & scientific | 1992 |
| Abbey Investment Solutions Ltd | Financial services | 2008 |
| Abbey Kaftans Limited | Health & social care | 2014 |
| Abbey LN Ltd | Real estate | 2020 |
| Abbey Meadows (Chorley) Management Limited | Households | 2021 |
| Abbey Property Solutions Limited | Real estate | 2003 |
| Abbey Secure Solutions Ltd | Administrative & support | 2014 |
| Abbey Tax Limited | Professional & scientific | 2025 |
| Abbey Village Management Company Limited | Households | 2023 |
| Abbeybright Ltd. | Professional & scientific | 2015 |
| Abbeydale Holding Limited | Wholesale & retail | 2020 |
| Abbeygate Search Ltd | Administrative & support | 2026 |
| Abbeyride Limited | Professional & scientific | 2008 |
| Abbeyville Holdings Limited | Financial services | 2026 |
| Abbfab Services Limited | Manufacturing | 1992 |
| Abbie Care Limited | Health & social care | 2020 |
| Abbott Fresh Eats Limited | Hospitality | 2025 |
| Abbys Minibuses Ltd | Transport & logistics | 2021 |
| ABC Apartments Ltd | Real estate | 2008 |
| ABC Debt Solutions Limited | Professional & scientific | 2018 |
| ABC Wholesale Ltd | Wholesale & retail | 2026 |
| Abca Electrical Services Limited | Construction | 2019 |
| ABD Ceramics Limited | Construction | 1997 |
| ABD Motors Ltd | Wholesale & retail | 2023 |
| Abdul Ahmed Foods Limited | Hospitality | 2023 |
| Abdul Estates Ltd | Real estate | 2025 |
| Abdul Khan Boxing Limited | Arts & recreation | 2025 |
| Abdullah Property Maintenance Limited | Construction | 2025 |
| Abdullah Uzair Ltd | Transport & logistics | 2025 |
| Abeeha's Fashion & Beauty Ltd | Wholesale & retail | 2022 |
| Abel Utilities Ltd | Energy | 2024 |
| Abena's Helping Hands CIC | Hospitality | 2026 |
| Abersoch Development Limited | Construction | 2021 |
| ABG Automation Limited | Manufacturing | 2022 |
| Abgoods NW Ltd | Wholesale & retail | 2025 |
| Abhi Import & Export (UK) Ltd | Wholesale & retail | 2025 |
| Abhys Limited | Other services | 2015 |
| ABI Aluminium Limited | Construction | 2014 |
| ABI Glow Clinic Ltd | Other services | 2026 |
| ABI Transport Logistics Ltd | Transport & logistics | 2026 |
| Abify UK Ltd | Real estate | 2020 |
| Abigold Property Limited | Real estate | 2024 |
| Ability Beyond Vision Limited | Administrative & support | 2026 |
| Ability Paper Limited | Wholesale & retail | 2005 |
| Abilodge Limited | Other services | 2003 |
| Abiodun O.N Ltd | Health & social care | 2023 |
| Abiora Limited | Health & social care | 2022 |
| Abipau Limited | Transport & logistics | 2025 |
| Abis Heating and Plumbing Ltd | Construction | 2023 |
| ABJ (Assisted by Jehovah) Limited | Professional & scientific | 2016 |
| ABL Health Limited | Health & social care | 2009 |
| ABL789 Holdings Limited | Extraterritorial | 2018 |
| Able AI Ltd | Professional & scientific | 2025 |
| Able Skip Hire (Leyland) Limited | Transport & logistics | 2022 |