| Andrew James Homewares (UK) Limited | Wholesale & retail | 2020 |
| Andrew Mines Limited | Extraterritorial | 2011 |
| Andrew Mottram Construction & Maintenance Limited | Construction | 2003 |
| Andrew Sherratt Limited | Construction | 2009 |
| Andrew Wade Osteopath Limited | Health & social care | 2015 |
| Andrew Ward Ltd | Professional & scientific | 2013 |
| Andrew Yates Photography Ltd | Professional & scientific | 2017 |
| Andrews Hydraulics Limited | Manufacturing | 1983 |
| Andrews Ventures Ltd | Real estate | 2022 |
| Andrhal Welfare Trust | Administrative & support | 2009 |
| Andy Mullock Auto's Limited | Wholesale & retail | 2018 |
| Andy Nelms Carpentry Ltd | Construction | 2021 |
| Andy Smith Ltd | Wholesale & retail | 2003 |
| Andy's Building & Renovation Ltd | Construction | 2011 |
| Andy's Butchers Ltd | Wholesale & retail | 2024 |
| Andygo Ltd | Transport & logistics | 2020 |
| Angelic Home Ltd | Health & social care | 2023 |
| Angelicare Limited | Administrative & support | 2026 |
| Angeljinna Ltd | Health & social care | 2017 |
| Anghelyna Studio Ltd | Information & communication | 2025 |
| Anglia & Charter Legal Services Ltd | Professional & scientific | 2026 |
| Anglo Arab Trading UK Ltd | Administrative & support | 2022 |
| Anglo Building and Consultancy Ltd | Construction | 2024 |
| Anglo Clays and Minerals Limited | Wholesale & retail | 1991 |
| Angstrom Limited | Manufacturing | 2003 |
| Animalco Limited | Administrative & support | 2020 |
| Anis MED Ltd | Health & social care | 2025 |
| Anitec Ltd | Professional & scientific | 2025 |
| Anjumxpert Limited | Information & communication | 2025 |
| Anmol Fashions Ltd | Wholesale & retail | 2024 |
| Anna Gold Ltd. | Other services | 2019 |
| Annamk Ltd | Health & social care | 2024 |
| Annandale Construction Services Limited | Construction | 2017 |
| Annax Utilities Ltd | Administrative & support | 2024 |
| Annex (Ceilings & Partitions) Limited | Construction | 2005 |
| Annies Wellbeing Ltd | Administrative & support | 2018 |
| Anokaba Ltd | Transport & logistics | 2026 |
| Anonymous Costume Limited | Arts & recreation | 2016 |
| ANQ Legal Limited | Professional & scientific | 2024 |
| ANS Kitchens Ltd | Manufacturing | 2024 |
| ANS Primevista Ltd | Wholesale & retail | 2025 |
| Ansrd! Solutions Ltd | Information & communication | 2025 |
| Answer My Calls Limited | Administrative & support | 2024 |
| Answerflix Ltd | Education | 2024 |
| ANT Morris Ltd | Extraterritorial | 2021 |
| ANT Retail Ltd | Hospitality | 2023 |
| Antalya Barbers ST Ltd | Other services | 2024 |
| Antam Healthcare Limited | Health & social care | 2016 |
| Antey Limited | Transport & logistics | 2019 |
| Anthony Castrey Limited | Financial services | 2012 |
| Anthony John Finney Ltd | Extraterritorial | 2025 |
| Antik-Front Ltd | Information & communication | 2025 |
| Antofy Ltd | Wholesale & retail | 2023 |
| ANTONIA2018 Expert Ltd | Transport & logistics | 2022 |
| Antonio Removals Ltd | Transport & logistics | 2025 |
| ANU Holdings Limited | Construction | 2017 |
| Anubla Ltd | Real estate | 2023 |
| Anudara Ltd | Hospitality | 2025 |
| Anvi Trading Limited | Wholesale & retail | 2026 |
| Anvul Ltd | Information & communication | 2026 |
| Anwan Ltd | Wholesale & retail | 2024 |
| Anymove Limited | Transport & logistics | 2018 |
| Anyone. Anywhere. Ltd | Professional & scientific | 2023 |
| Anything 4 Home Ltd | Manufacturing | 2012 |
| AOA (2019) Limited | Arts & recreation | 2019 |
| AP Agricultural Limited | Professional & scientific | 2025 |
| AP Innovate Ltd | Information & communication | 2026 |
| AP SD Forty Two Limited | Wholesale & retail | 2025 |
| AP SD SIX Limited | Wholesale & retail | 2025 |
| AP Technology Services Limited | Information & communication | 2021 |
| Aparta Maydestone Ltd | Water & waste | 2022 |
| APB Group Holdings Limited | Financial services | 2020 |
| APB Services (Staffs) Ltd | Wholesale & retail | 2009 |
| APB Shopfitters Limited | Construction | 2014 |
| APB Ventures Limited | Real estate | 2025 |
| Apds Properties Ltd | Real estate | 2004 |
| Apex Automobiles Ltd | Wholesale & retail | 2026 |
| Apex Brick Ltd | Construction | 2025 |
| Apex Business Communications Limited | Information & communication | 2026 |
| Apex Ecology Limited | Other services | 2006 |
| Apex MOT Test Centre Limited | Wholesale & retail | 2019 |
| Apex Repair Centre Limited | Wholesale & retail | 2019 |
| Apex Security Direct Ltd | Administrative & support | 2026 |
| Apex Watts Trading Ltd | Wholesale & retail | 2026 |
| Apexe Hallton Ltd | Construction | 2021 |
| Apexline Property Ltd | Real estate | 2026 |
| Apexvol Ltd | Information & communication | 2026 |
| APH (Staffs) Limited | Other services | 2023 |
| Apis Landscaping Ltd | Construction | 2022 |
| Apismeritas (TM) Ltd | Professional & scientific | 2026 |
| Apjp Investments Limited | Financial services | 2023 |
| Aplus Catering Ltd | Hospitality | 2026 |
| Aplus Hospitality Ltd | Hospitality | 2024 |
| Aplus Structures Ltd | Professional & scientific | 2022 |
| Apollo Exchange Ltd | Extraterritorial | 2020 |
| Apollo GAS and Heating Services Ltd | Construction | 2017 |
| Apollo Retail Limited | Other services | 2023 |
| Apostolic Praise Centre Limited | Other services | 2026 |
| Appexe Developments Ltd | Construction | 2022 |
| Apple IT Solution Limited | Information & communication | 2023 |