| Ariya Courier Services Ltd | Transport & logistics | 2018 |
| ARIYA9 Limited | Real estate | 2021 |
| Ariyel Academy Ltd | Education | 2019 |
| Ariyola PVT Ltd | Households | 2018 |
| Arjan & Co Investments Ltd | Real estate | 2018 |
| ARK Asset Management Ltd | Extraterritorial | 2016 |
| ARK Commercial Motor Limited | Extraterritorial | 2016 |
| ARK Consulting PVT Ltd | Information & communication | 2025 |
| ARK Goods Ltd | Wholesale & retail | 2026 |
| ARK Insurance Group Limited | Financial services | 2014 |
| ARK Supermarket Limited | Wholesale & retail | 2013 |
| ARK Tiles Ltd | Wholesale & retail | 2025 |
| ARK Warranty Services Limited | Professional & scientific | 2019 |
| Arkey-Fs Limited | Manufacturing | 2021 |
| Arkman Limited | Administrative & support | 2003 |
| Arko Holding Limited | Financial services | 2018 |
| Arkount Financial Services Ltd | Professional & scientific | 2014 |
| Arley & ST. Michael`S Community Centre | Other services | 2008 |
| Arley Brickwork & Repairs Ltd | Construction | 2026 |
| Arlington Project Management Limited | Professional & scientific | 2007 |
| Arlington Renovations Ltd | Construction | 2019 |
| ARM Accountancy Limited | Professional & scientific | 2015 |
| ARM Dwellings Limited | Construction | 2014 |
| Armaan EV Sales & Services Ltd | Wholesale & retail | 2025 |
| Armadillo Build & Design Limited | Construction | 2002 |
| Armadillo Media Limited | Professional & scientific | 2011 |
| Arman Brothers (Kettering) Ltd | Wholesale & retail | 2023 |
| Armanda'Sweets Limited | Hospitality | 2026 |
| Armando KJS Ltd | Professional & scientific | 2019 |
| Armasppm Ltd | Information & communication | 2018 |
| Armiah Ltd | Wholesale & retail | 2024 |
| Armighorn Capital Limited | Health & social care | 2018 |
| Armighorn Healthcare Limited | Manufacturing | 2020 |
| Armighorn Services Limited | Administrative & support | 2018 |
| Armighorn Staffing Limited | Health & social care | 2020 |
| Armina Cleaning Ltd | Administrative & support | 2025 |
| Armitage GAS Services (West Midlands) Ltd | Construction | 2023 |
| Arms Khinda Limited | Manufacturing | 2008 |
| Armson-Boult Ltd | Manufacturing | 2015 |
| Armstrong Composites Limited | Manufacturing | 2023 |
| Armstrong Industries Limited | Manufacturing | 1996 |
| Armstrong Industries Trustees Limited | Professional & scientific | 2023 |
| Armstrong Property Management Services Limited | Real estate | 2017 |
| Armstrongs (Hinckley) Limited | Professional & scientific | 2019 |
| Armstrongs Accountancy Ltd | Professional & scientific | 2003 |
| Armstrongs Audit Limited | Professional & scientific | 2025 |
| Armstrongs Group Limited | Financial services | 2025 |
| Armstrongs Resources Limited | Administrative & support | 2021 |
| Armstrongs Wealth Planning Limited | Financial services | 2018 |
| Arndale Cakebox Ltd | Wholesale & retail | 2022 |
| Arniah Housing Ltd | Real estate | 2025 |
| Arno Consulting Limited | Professional & scientific | 2019 |
| Arnold Builders Limited | Construction | 2026 |
| Arnold Business and Engineering Consulting Ltd | Professional & scientific | 2010 |
| Arnold Contracts Limited | Administrative & support | 2010 |
| Arnold Group Limited | Construction | 2021 |
| Arnold Lane Service Centre (Notts) Ltd | Wholesale & retail | 2023 |
| Arogya's Hospitality Limited | Hospitality | 2022 |
| Aroha Trade Ltd | Wholesale & retail | 2025 |
| Aroma Coventry Takeaway Ltd | Hospitality | 2024 |
| Aroma Entertainment Ltd | Hospitality | 2014 |
| Aron Trans Limited | Transport & logistics | 2019 |
| Arora & Sons (WM) Ltd | Wholesale & retail | 2021 |
| Arora Brothers Ltd | Wholesale & retail | 2021 |
| Arora Prime Ventures Ltd | Manufacturing | 2026 |
| ARORA16 Limited | Transport & logistics | 2021 |
| Arora’S EN11 Ltd | Wholesale & retail | 2025 |
| Arpan Transport Ltd | Transport & logistics | 2015 |
| Arpana School of Arts Ltd | Arts & recreation | 2025 |
| ARR369 Ltd | Construction | 2025 |
| Arriba Arriba Ltd | Other services | 2024 |
| Arrow Accident and Injury Management Ltd | Professional & scientific | 2010 |
| Arrow CRM Limited | Information & communication | 2025 |
| Arrow Estate Agents Ltd | Real estate | 2020 |
| Arrow Estate Agents Midlands Ltd | Real estate | 2025 |
| Arrow Group Ltd. | Real estate | 2001 |
| Arrow Logistic Transport Limited | Transport & logistics | 2025 |
| Arrowood Limited | Health & social care | 2018 |
| Arrowsmith Engineering (Coventry) Limited | Manufacturing | 1967 |
| ARS Properties & Investments Ltd | Real estate | 2026 |
| Arsh Technical Services Ltd | Manufacturing | 2024 |
| Arshi Prime Limited | Wholesale & retail | 2026 |
| Arslan Property Lettings Ltd | Real estate | 2025 |
| Art of Creation Limited | Administrative & support | 2024 |
| Art Riot Collective C.I.C. | Administrative & support | 2022 |
| Artbloc Company Ltd | Manufacturing | 2005 |
| Artefekz Limited | Manufacturing | 2002 |
| Artek Trans Ltd | Transport & logistics | 2016 |
| Artemis Garage Ltd | Wholesale & retail | 2020 |
| Artemis Logistics Ltd | Transport & logistics | 2023 |
| Artemis Tyche Limited | Administrative & support | 2020 |
| Arten Design Ltd | Professional & scientific | 2025 |
| Artful Consulting Limited | Professional & scientific | 2023 |
| Artfully Promoted Limited | Professional & scientific | 2023 |
| Arthur Construction Limited | Construction | 2023 |
| Artifex-Uk Limited | Manufacturing | 2011 |
| Artisan Bar & Grill Limited | Hospitality | 2015 |
| Artisan Intelligent Hygiene Limited | Wholesale & retail | 2019 |
| Artistic Visions Ltd | Wholesale & retail | 2024 |
| Artistry Hair and Beauty Ltd | Other services | 2018 |