| Anytime Concrete (UK) Ltd | Other services | 2005 |
| Anytime Driving Ltd | Education | 2026 |
| Anytime Removals Ltd | Transport & logistics | 2020 |
| Anyu & Sons Ltd | Wholesale & retail | 2025 |
| Anyx Services Limited | Administrative & support | 2022 |
| ANZ Consulting Ltd | Financial services | 2025 |
| ANZ Property Limited | Real estate | 2022 |
| Anzan Immigration Lawyers Ltd | Professional & scientific | 2020 |
| Anzara Limited | Information & communication | 2007 |
| Anzila Event Management & Catering Services Ltd | Hospitality | 2015 |
| AO 168 Limited | Hospitality | 2026 |
| AO Care Service Limited | Public administration | 2020 |
| AO Radiology Ltd | Health & social care | 2025 |
| AO Trading Ltd | Wholesale & retail | 2017 |
| AO Tyres Ltd | Wholesale & retail | 2020 |
| AOA Logistics Ltd | Other services | 2025 |
| AOC Housing Solutions Ltd | Hospitality | 2026 |
| AOK General Trading Company Ltd | Wholesale & retail | 2019 |
| AOK Property Ltd | Financial services | 2021 |
| AON Group Limited | Real estate | 2025 |
| Aorta Events C.I.C. | Hospitality | 2024 |
| Aorta Solutions Limited | Information & communication | 2019 |
| AOS Air Conditioning and Engineering Holdings Limited | Financial services | 2024 |
| AOS Air Conditioning and Mechanical Services Limited | Construction | 2022 |
| AOS Contractor Ltd | Professional & scientific | 2023 |
| AOS Roofing Services Ltd | Construction | 2024 |
| Aostar Energy Limited | Wholesale & retail | 2023 |
| AOV Creatives Ltd | Construction | 2025 |
| AP Accountants - Medical & Property Ltd | Professional & scientific | 2024 |
| AP Alloys Limited | Wholesale & retail | 2013 |
| AP Athletics Ltd | Arts & recreation | 2017 |
| AP Commercial Services Limited | Professional & scientific | 2019 |
| AP Construct Ltd | Construction | 2024 |
| AP Enterprises (Chillington) Ltd | Real estate | 2013 |
| AP Imaging (UK) Limited | Health & social care | 2013 |
| AP Investment Properties Ltd | Real estate | 2025 |
| AP KAY Apnay Ltd | Wholesale & retail | 2026 |
| AP Lali Construction Ltd | Construction | 2023 |
| AP Locum Services Ltd | Health & social care | 2023 |
| AP Luxury Travel Ltd | Transport & logistics | 2024 |
| AP Midlands Limited | Hospitality | 2024 |
| AP Morgan Bromsgrove Limited | Real estate | 2013 |
| AP Morgan Halesowen Limited | Real estate | 2018 |
| AP Morgan Northfield Limited | Real estate | 2018 |
| AP Morgan Stourbridge Limited | Real estate | 2018 |
| AP Portfolio Limited | Real estate | 2020 |
| AP Premier Holdings Ltd | Financial services | 2020 |
| AP SD Thirty Three Limited | Wholesale & retail | 2025 |
| AP Talent Solutions Limited | Administrative & support | 2015 |
| AP Travel Limited | Transport & logistics | 2021 |
| AP8 Manager Ltd | Households | 2021 |
| Apache Distribution Limited | Transport & logistics | 2001 |
| Apache Engineering Solutions Limited | Information & communication | 2001 |
| Apache SIX Ltd | Real estate | 2017 |
| Apache Tech Limited | Wholesale & retail | 2025 |
| Apad Facades Limited | Construction | 2015 |
| Apaxtrade Ltd | Wholesale & retail | 2025 |
| APC Site Management Ltd | Construction | 2018 |
| Apco Technologies Services Ltd | Manufacturing | 2021 |
| APD Global Ltd | Transport & logistics | 2025 |
| APD Studios Worldwide Limited | Administrative & support | 2020 |
| Apdane Limited | Other services | 2020 |
| APE Finance Limited | Financial services | 2023 |
| Ape-X Performance and Fitness Limited | Wholesale & retail | 2024 |
| Apec Architects Limited | Professional & scientific | 2010 |
| Apec Engineers Limited | Construction | 2016 |
| Apec Limited | Wholesale & retail | 1965 |
| Apefo Ltd | Information & communication | 2025 |
| Apeh Heating Limited | Construction | 2020 |
| Apeirogon Services Ltd | Wholesale & retail | 2021 |
| Apeiron XXV Ltd | Wholesale & retail | 2024 |
| Apex (2020) Limited | Professional & scientific | 2020 |
| Apex Academy Consulting Limited | Education | 2025 |
| Apex Accommodation Limited | Hospitality | 2026 |
| Apex Adventures Tours Limited | Administrative & support | 2025 |
| Apex Applied Experience Limited | Administrative & support | 2010 |
| Apex ASC Ltd | Education | 2020 |
| Apex Auto Techs Ltd | Wholesale & retail | 2024 |
| Apex Autocentres Ltd | Wholesale & retail | 2011 |
| Apex Automotive Sales Ltd | Wholesale & retail | 2025 |
| Apex B & D Limited | Construction | 2019 |
| Apex Birmingham Limited | Other services | 2013 |
| Apex Brickwork Contractors Ltd | Construction | 2024 |
| Apex Business Supplies Limited | Wholesale & retail | 2022 |
| Apex Capital Management Limited | Real estate | 2026 |
| Apex Chauffeurs Ltd | Transport & logistics | 2022 |
| Apex City Housing Ltd | Real estate | 2025 |
| Apex Commercial Syndicate Ltd | Real estate | 2024 |
| Apex Connect Ltd | Administrative & support | 2019 |
| Apex Corporate Group Limited | Wholesale & retail | 2025 |
| Apex Craftsman Ltd | Construction | 2024 |
| Apex Creation Builders Ltd | Construction | 2026 |
| Apex Driving ADI Ltd | Education | 2026 |
| Apex Ecommerce Limited | Information & communication | 2013 |
| Apex Electrical Services Birmingham Ltd | Construction | 2025 |
| Apex Elite Security Ltd | Administrative & support | 2025 |
| Apex Engineering Solutions Ltd | Construction | 2024 |
| Apex Event Parking Ltd | Transport & logistics | 2026 |
| Apex Food & Supply Ltd | Wholesale & retail | 2026 |
| Apex FOX Ltd | Wholesale & retail | 2026 |