| Apex Trading Cards Limited | Wholesale & retail | 2024 |
| APEX8 Holdings Limited | Real estate | 2026 |
| Apexa Transit Ltd | Transport & logistics | 2025 |
| Apexcore Supply Ltd | Wholesale & retail | 2026 |
| Apexline Logistics Ltd | Transport & logistics | 2026 |
| Apexx Craft Limited | Manufacturing | 2025 |
| APG Cleaning Services Ltd | Administrative & support | 2018 |
| Apgerbu Paradize Ltd | Wholesale & retail | 2022 |
| Apgv Properties Limited | Real estate | 2023 |
| APH Project Management Ltd | Professional & scientific | 2026 |
| API Energy Ltd. | Manufacturing | 2021 |
| APK Retail Ltd | Wholesale & retail | 2026 |
| APK Tech Limited | Information & communication | 2026 |
| APM Investing Ltd | Real estate | 2019 |
| Apmcconstruction Ltd | Construction | 2026 |
| Apmm Ltd | Health & social care | 2016 |
| Apna Holdings Limited | Financial services | 2024 |
| Apna LET Ltd | Real estate | 2014 |
| Apna Skip Hire Limited | Water & waste | 2025 |
| Apoccyber Ltd | Information & communication | 2023 |
| Apollix Medias Ltd | Professional & scientific | 2017 |
| Apollo Brothers Limited | Wholesale & retail | 2025 |
| Apollo Coventry Limited | Professional & scientific | 2000 |
| Apollo Gym (Coventry) Limited | Arts & recreation | 2012 |
| Apollo Tyres Ltd | Wholesale & retail | 2019 |
| Apolo P&D Construction Ltd | Construction | 2025 |
| Apostille Limited | Administrative & support | 2017 |
| Apostolic Evangelical Ministries Limited | Other services | 2018 |
| Apostolic Faith Mission International Ministries UK Coventry City Fellowship CIC | Education | 2023 |
| Apostrophe Accounted Limited | Professional & scientific | 2022 |
| App Excellence Technologies Ltd | Information & communication | 2018 |
| Appachyfastfoods Limited | Hospitality | 2022 |
| Appcountancy Limited | Information & communication | 2025 |
| Appetra Ltd | Information & communication | 2017 |
| Appietite Limited | Professional & scientific | 2019 |
| Apple and Android Games Ltd | Information & communication | 2022 |
| Apple and BEE Photography Ltd | Professional & scientific | 2021 |
| Apple Construction Training Limited | Administrative & support | 2009 |
| Apple Tree Recruitment Limited | Administrative & support | 2019 |
| Applewood Country Store Ltd | Wholesale & retail | 2020 |
| Appliansys Limited | Manufacturing | 2011 |
| Appliansys Ventures Limited | Professional & scientific | 2024 |
| Applied BI Services Ltd | Professional & scientific | 2023 |
| Applied Mathematics Corporation Ltd | Information & communication | 2024 |
| Appointed Times Properties Ltd | Real estate | 2025 |
| Apprise Consulting Ltd | Professional & scientific | 2003 |
| Approve Network Installations Limited | Construction | 2011 |
| Approved GAS Solutions Ltd | Construction | 2019 |
| Approved Maintenance Limited | Manufacturing | 2026 |
| Approved Used Vehicles Limited | Financial services | 2008 |
| Apps Living Limited | Real estate | 2013 |
| Appsolute Technology Limited | Information & communication | 2014 |
| APR Finance Limited | Financial services | 2011 |
| April Clothing Online Ltd | Wholesale & retail | 2012 |
| Aproste Ltd | Extraterritorial | 2024 |
| APS Accountants (UK) Ltd. | Professional & scientific | 2003 |
| APS Express Logistics Ltd | Transport & logistics | 2025 |
| APS Integration Limited | Information & communication | 2010 |
| APS Risk Ltd | Administrative & support | 2026 |
| APS Services Consultants Limited | Professional & scientific | 2011 |
| APS Services Pro Ltd | Professional & scientific | 2016 |
| Apsaras Aesthetic Clinic Limited | Health & social care | 2003 |
| APT Electrics Limited | Construction | 2001 |
| APT Venture Ltd | Administrative & support | 2024 |
| Aptemus Limited | Information & communication | 2015 |
| Aptitude Organisation CIC | Health & social care | 2017 |
| Aptiv European Holdings (UK) Limited | Professional & scientific | 2015 |
| Aptlysafe Ltd | Professional & scientific | 2022 |
| Aptware Limited | Information & communication | 2019 |
| Apyovia Ltd | Professional & scientific | 2024 |
| AQ Legal Limited | Professional & scientific | 2015 |
| Aqua Horizon Ltd | Professional & scientific | 2020 |
| Aqua JET Profiles Limited | Professional & scientific | 2001 |
| Aqua Laboratories Limited | Manufacturing | 2013 |
| Aqua Pro Roofing Service Ltd | Construction | 2025 |
| Aqua Seduction Limited | Wholesale & retail | 2014 |
| Aqua Vida Services Limited | Administrative & support | 2025 |
| Aquallis Plumbing Ltd | Construction | 2019 |
| Aquarius Property Group Limited | Real estate | 2024 |
| Aquenture Ltd | Wholesale & retail | 2020 |
| Aqueous Irrigation Limited | Manufacturing | 2016 |
| Aqueozone Solutions Ltd | Wholesale & retail | 2020 |
| Aqui TE Espero Ltd | Hospitality | 2025 |
| Aquinas Innovations Limited | Other services | 2014 |
| Aqulia Ltd | Real estate | 2020 |
| AR Exclusively Online Ltd | Wholesale & retail | 2022 |
| AR Rehman Logistics Ltd | Wholesale & retail | 2025 |
| AR Shanker Ltd | Wholesale & retail | 2018 |
| AR Tech Security Ltd | Administrative & support | 2025 |
| AR Toys & Collectables LLP | | 2018 |
| AR Trading (Midlands) Limited | Hospitality | 2018 |
| Ar'Wah & Atheelah Properties Limited | Real estate | 2024 |
| Ar'Wah Housing Holdings Ltd | Financial services | 2025 |
| ARA Consulting (Coventry) Limited | Professional & scientific | 2022 |
| Ara&Ra Construction Limited | Construction | 2025 |
| Ara'Nbe Africa Limited | Wholesale & retail | 2023 |
| Arabesque School of Dance Limited | Arts & recreation | 2009 |
| Arabian Nights Ltd | Wholesale & retail | 2025 |
| Aragorn Ltd | Real estate | 2025 |
| Arai Technologies Ltd | Information & communication | 2025 |