| Abrahams (Yorkshire) Ltd | Professional & scientific | 2020 |
| Absamc (UK) Ltd | Health & social care | 2013 |
| Absar's Limited | Wholesale & retail | 2020 |
| Absolute Bodycare Limited | Wholesale & retail | 2018 |
| Absolute Construction Works Limited | Construction | 2020 |
| Absolute Decorators Ltd | Administrative & support | 2019 |
| Absolute Locks Ltd | Administrative & support | 2024 |
| Absolute Transport Limited | Transport & logistics | 2025 |
| Absolutely Organic Skincare Ltd | Wholesale & retail | 2021 |
| ABU Bakar Baloch Limited | Wholesale & retail | 2025 |
| ABU Hanifah Books Limited | Wholesale & retail | 2021 |
| ABU Property Holdings Limited | Real estate | 2024 |
| Abugrillhouse Limited | Hospitality | 2023 |
| Abul Foyez Limited | Transport & logistics | 2025 |
| Abundant Life Resources Limited | Wholesale & retail | 2002 |
| Abush MED Ltd | Health & social care | 2022 |
| Abuza Limited | Wholesale & retail | 2025 |
| Abuzarkh Ltd | Transport & logistics | 2025 |
| Abuzz Training Limited | Professional & scientific | 2018 |
| Abvc Sports Limited | Wholesale & retail | 2026 |
| ABY Collection Limited | Manufacturing | 2024 |
| ABY Consultancy Limited | Professional & scientific | 2021 |
| ABZ & Sons Limited | Wholesale & retail | 2024 |
| AC Building Solutions Ltd | Construction | 2018 |
| AC Clerk of Works Services Limited | Construction | 2017 |
| AC Contracting Solutions Ltd | Professional & scientific | 2026 |
| AC Yorkshire Ltd | Hospitality | 2025 |
| Acacia Park Management Company Limited | Real estate | 2018 |
| Academi Online Ltd | Education | 2022 |
| Academia Schoolwear Ltd | Wholesale & retail | 2018 |
| Academy Contract Hire TA Eurocabs Ltd | Transport & logistics | 2024 |
| Acarrier Limited | Manufacturing | 2018 |
| Accent Capital PLC | Financial services | 2019 |
| Accent Group Pension Trustees Limited | Other services | 1992 |
| Accent Homemade Limited | Construction | 2005 |
| Access 24 Ltd | Real estate | 2009 |
| Access Accountancy Services Ltd | Professional & scientific | 2017 |
| Access Compensation Ltd | Wholesale & retail | 2009 |
| Access Garage Doors Yorkshire Limited | Construction | 2010 |
| Access HR Ltd | Administrative & support | 2021 |
| Access Office Services Ltd | Administrative & support | 2022 |
| Access Solutions Northern Limited | Construction | 2006 |
| Accident Information Centre Ltd | Administrative & support | 2015 |
| Accident Law Group Ltd | Professional & scientific | 2023 |
| Accm Services Ltd | Transport & logistics | 2017 |
| Accor Property Group Ltd | Real estate | 2024 |
| Accord Accounting and Book-Keeping Services Ltd | Professional & scientific | 2010 |
| Accord Mortgages Limited | Financial services | 1987 |
| Account 4 IT (UK) Limited | Professional & scientific | 2007 |
| Account-Ant (Yorkshire) Limited | Professional & scientific | 2021 |
| Accountancy Plus (UK) Limited | Professional & scientific | 1996 |
| Accountantly Ltd | Information & communication | 2022 |
| Accountax BFD Ltd | Professional & scientific | 2017 |
| Accountax Partners Limited | Professional & scientific | 2011 |
| Accounts Made Simple Limited | Construction | 2005 |
| Accounts Pro Ltd | Administrative & support | 2010 |
| ACD Easton Limited | Hospitality | 2016 |
| Ace 24/7 Ltd | Construction | 2025 |
| Ace Autos (West Yorkshire) Limited | Wholesale & retail | 2022 |
| Ace Autotek Ltd | Wholesale & retail | 2025 |
| Ace Cleaning Services Ltd | Administrative & support | 2024 |
| Ace Credit Hire Ltd | Administrative & support | 2021 |
| Ace Expertsz Ltd | Wholesale & retail | 2024 |
| Ace Forex Limited | Financial services | 2019 |
| Ace Gems Limited | Manufacturing | 2025 |
| Ace Logistics and Car Sales Ltd | Wholesale & retail | 2024 |
| Ace Luxury Deals Ltd | Wholesale & retail | 2025 |
| Ace of Fades Barbershop Bradford Ltd | Other services | 2024 |
| Ace Seamless Gutters Ltd | Construction | 2019 |
| Ace Tradehouse Ltd | Wholesale & retail | 2026 |
| Ace Traders (Yorkshire) Ltd | Wholesale & retail | 2026 |
| Ace Transports 247 Limited | Transport & logistics | 2024 |
| Acedia Properties Limited | Real estate | 2014 |
| Acer Rose Consultancy Limited | Administrative & support | 2024 |
| ACG Care Services Ltd | Households | 2017 |
| ACH Building Services Ltd | Construction | 2024 |
| Acksys Limited | Professional & scientific | 2015 |
| Acksys Properties Limited | Real estate | 2002 |
| ACL Highway Services Limited | Administrative & support | 2011 |
| Acme SL Ltd | Wholesale & retail | 2017 |
| Acorn Access Solutions Ltd | Construction | 2021 |
| Acorn Child Psychology Ltd | Education | 2023 |
| Acorn Group Yorkshire Limited | Real estate | 2025 |
| Acowtants Limited | Professional & scientific | 2023 |
| Acre Investments U.K Ltd | Construction | 2022 |
| Acre Projects UK Limited | Construction | 2020 |
| Acre Properties Development Limited | Real estate | 2006 |
| Acregate UB Ltd | Wholesale & retail | 2017 |
| ACS Sales Ltd | Wholesale & retail | 2025 |
| ACS Security Ltd | Other services | 2014 |
| ACT Locums Ltd | Health & social care | 2026 |
| Acta Assist Limited | Other services | 2020 |
| Action Economy Ltd | Information & communication | 2026 |
| Action for Business (Bradford) Limited | Administrative & support | 1992 |
| Action for Community Ltd. | Other services | 2009 |
| Action for Health CIC | Education | 2023 |
| Action IT Limited | Administrative & support | 2013 |
| Activate Medicals Limited | Health & social care | 2023 |
| Active Bradford Limited | Education | 2018 |
| Active Claims (UK) Ltd | Other services | 2006 |