| A & M Harland Plumbing & Heating Limited | Construction | 2015 |
| A & M Kempster Ltd | Construction | 2024 |
| A & M Nield Property Limited | Real estate | 2023 |
| A & P Properties (Leeds) Limited | Real estate | 2025 |
| A & Q Hill Limited | Education | 2011 |
| A & Q Vietnamese Foods Ltd | Wholesale & retail | 2024 |
| A & R Accountancy Limited | Professional & scientific | 2006 |
| A & R Consultant Specialists Ltd | Administrative & support | 2024 |
| A & R Sheet Metal Limited | Administrative & support | 2001 |
| A & S Decorators Limited | Construction | 2003 |
| A & S Electrical Holdings Limited | Construction | 1995 |
| A & S Electrical Leeds Ltd | Construction | 2020 |
| A & S Home Garden Pet Supplies Ltd | Wholesale & retail | 2025 |
| A & S Homes Limited | Construction | 2015 |
| A & S Investment Property Limited | Real estate | 2023 |
| A & T Security Ltd | Administrative & support | 2023 |
| A & V Premium Ltd | Construction | 2024 |
| A & V Transitional Homes Ltd | Real estate | 2017 |
| A & Y Food Products Limited | Hospitality | 2016 |
| A & Y Properties Management Ltd | Real estate | 2025 |
| A & Z Heating Solutions Ltd | Construction | 2025 |
| A a H Planning Consultants Ltd | Professional & scientific | 2006 |
| A and a Utilities Ltd | Administrative & support | 2022 |
| A and Nice Limited | Information & communication | 2007 |
| A and R Construction Yorkshire Ltd | Construction | 2025 |
| A and ZEE Ltd | Health & social care | 2019 |
| A B Beds (Yorkshire) Ltd | Wholesale & retail | 2020 |
| A B Developments (Yorkshire) Limited | Construction | 2012 |
| A B Driveways Limited | Administrative & support | 2026 |
| A B Heritage Roofing Limited | Construction | 2014 |
| A B I Design Partnership Limited | Professional & scientific | 2012 |
| A B Interiors (Leeds) Limited | Construction | 2016 |
| A B Outsourcing Limited | Professional & scientific | 1997 |
| A B Properties Leeds Ltd | Real estate | 2025 |
| A B Tunkara Kaira Ltd | Transport & logistics | 2017 |
| A Better Place Music Ltd | Information & communication | 2024 |
| A Biddles Ltd | Administrative & support | 2015 |
| A Bite Ltd | Wholesale & retail | 2022 |
| A Bravo Electrical Ltd | Construction | 2019 |
| A C Howson Ltd | Health & social care | 2025 |
| A C Roofing (Yorkshire) Ltd | Construction | 2022 |
| A C Smith Metals Ltd | Wholesale & retail | 2023 |
| A C Superior Services Limited | Construction | 2026 |
| A Change of Tack Limited | Professional & scientific | 2012 |
| A Charlton Mechanical Services Limited | Professional & scientific | 2012 |
| A Cheng Consulting Limited | Information & communication | 2025 |
| A Constant Home Ltd | Real estate | 2022 |
| A D Golf Management Limited | Arts & recreation | 2004 |
| A D J Installations Limited | Construction | 2008 |
| A D Metal Spinning (Halifax) Limited | Manufacturing | 2004 |
| A D S Fleet Services Ltd | Wholesale & retail | 2011 |
| A D Tiling & SON Limited | Construction | 2020 |
| A Davy Consulting Limited | Professional & scientific | 2022 |
| A Deal Limited | Wholesale & retail | 2007 |
| A Devine Ltd | Wholesale & retail | 2024 |
| A Different Brand (ADB) Limited | Extraterritorial | 2020 |
| A DIN Property Ltd | Real estate | 2024 |
| A Duffield Marketing Limited | Administrative & support | 2025 |
| A E Joinery Group Limited | Construction | 2018 |
| A Esgate Property Limited | Construction | 2018 |
| A Fawcett Holdings Limited | Financial services | 2007 |
| A Fawcett Precision Engineering Limited | Manufacturing | 1983 |
| A G Joinery & Plumbing Ltd | Construction | 2024 |
| A G Vision Care Ltd | Wholesale & retail | 2025 |
| A Geldart Brickwork Limited | Construction | 2017 |
| A Geoghegan Ltd | Manufacturing | 2023 |
| A H Assessors Limited | Professional & scientific | 2022 |
| A H Electrical Contractors Grimsby Limited | Construction | 2025 |
| A H Keystone Property Ltd | Real estate | 2026 |
| A H Leeds Developments Limited | Real estate | 2023 |
| A H Rentals Ltd | Construction | 2020 |
| A Heald Limited | Professional & scientific | 1975 |
| A Husn Co Ltd | Wholesale & retail | 2024 |
| A I K Electronics Ltd | Wholesale & retail | 2009 |
| A J Building (Leeds) Limited | Construction | 2020 |
| A J Harriman Construction Ltd | Construction | 2026 |
| A J Intelligence Solutions Ltd | Information & communication | 2017 |
| A J J LEE Limited | Real estate | 2004 |
| A J Landscapes Ltd | Administrative & support | 2026 |
| A J Shooter Decorators Limited | Construction | 2017 |
| A J Solway Limited | Professional & scientific | 2005 |
| A J Sports Wear Limited | Wholesale & retail | 2019 |
| A J Tiling (Leeds) Limited | Construction | 2010 |
| A J Toys Ltd Limited | Wholesale & retail | 2025 |
| A Jean Cake Production Ltd | Arts & recreation | 2023 |
| A Jeffers Logistics Ltd | Transport & logistics | 2023 |
| A K R M Consultants Limited | Administrative & support | 2015 |
| A K W Engineering Limited | Manufacturing | 2016 |
| A KEW Consultancy Limited | Information & communication | 2015 |
| A L Smith Capital Ltd | Real estate | 2019 |
| A Legendary Enterprise Limited | Information & communication | 2022 |
| A Little Green Interior Designs Ltd | Professional & scientific | 2023 |
| A Little Something Extra Limited | Education | 2007 |
| A Logistics Ltd | Transport & logistics | 2015 |
| A M Delivery Ltd | Transport & logistics | 2025 |
| A M Gardening Services (Yorks) Ltd | Administrative & support | 2017 |
| A M Gilhome Joinery and Building Limited | Construction | 2009 |
| A M Gillett and Associates Limited | Professional & scientific | 2011 |
| A M Jones Limited | Other services | 2003 |
| A M Landscaping & Driveway Specialists Limited | Construction | 2017 |