| Annapurna Catering Services Ltd | Hospitality | 2025 |
| Annekom Limited | Professional & scientific | 2014 |
| ANP Technology Limited | Information & communication | 2015 |
| Ansh & Saniv Ltd | Wholesale & retail | 2017 |
| Antares One Ltd | Manufacturing | 2025 |
| Antera Ruchulu Foods Limited | Hospitality | 2024 |
| Anthony Bricklaying Services Ltd | Construction | 2016 |
| Anthonyvarg Holdings Ltd | Other services | 2021 |
| Antilia Travels Limited | Information & communication | 2025 |
| Antipode Limited | Wholesale & retail | 2020 |
| Antipode Projects Limited | Wholesale & retail | 2026 |
| Antipodespresso Limited | Wholesale & retail | 2013 |
| Antofie Ltd | Transport & logistics | 2019 |
| ANU Spice Limited | Hospitality | 2025 |
| Anuyu Hair & Beauty Ltd | Other services | 2010 |
| Anvira Limited | Information & communication | 2016 |
| Anwita Technologies Limited | Information & communication | 2015 |
| ANY AGE Home Care Ltd | Health & social care | 2024 |
| ANY Products Ltd | Wholesale & retail | 2022 |
| Anya M Staniak Ltd | Hospitality | 2025 |
| Aones Construction Ltd | Construction | 2019 |
| AOO Global Limited | Professional & scientific | 2021 |
| AOS Global Limited | Information & communication | 2021 |
| AP & RS Property Ltd | Real estate | 2022 |
| AP Discounts Ltd | Wholesale & retail | 2023 |
| AP FBA Ltd | Wholesale & retail | 2023 |
| AP1 Construction Ltd | Construction | 2024 |
| Apache Strategic Group Ltd | Professional & scientific | 2011 |
| Apart Traders Limited | Wholesale & retail | 2020 |
| APARTMENTS24 Ltd | Real estate | 2023 |
| APC Demolition Ltd | | 2015 |
| Apekama UK Ltd | Administrative & support | 2024 |
| Apex Commerce Trading Ltd | Wholesale & retail | 2026 |
| Apex Eleven Limited | Wholesale & retail | 2025 |
| Apex Fighting Club Limited | Administrative & support | 2025 |
| Apex Freight Logistics Ltd | Transport & logistics | 2025 |
| Apex IND Limited | Transport & logistics | 2026 |
| Apex International Services Limited | Information & communication | 2012 |
| Apex Liquid Roofing Ltd | Construction | 2026 |
| Apex R Ltd | Administrative & support | 2026 |
| Apex Repair & Maintenance Ltd | Manufacturing | 2022 |
| Apex Transformation Ltd | Information & communication | 2026 |
| Apex Vapes Ltd | Wholesale & retail | 2026 |
| Apexera Limited | Construction | 2026 |
| Apeza Ltd | Extraterritorial | 2023 |
| APG Group Limited | Wholesale & retail | 2019 |
| APG Pharma Limited | Wholesale & retail | 2025 |
| APK Homes Ltd | Real estate | 2017 |
| Aplus Vehicles Ltd | Administrative & support | 2018 |
| Apna Construction Ltd | Construction | 2017 |
| Apna Carpets Ltd | Wholesale & retail | 2013 |
| Apna Desh Ltd | Wholesale & retail | 2020 |
| Apna Store Ltd | Hospitality | 2019 |
| Apoli Ltd | Administrative & support | 2003 |
| Apollo Centre Limited | Other services | 2012 |
| Apollo Collection Limited | Administrative & support | 2025 |
| Apollo Intl Logistics Ltd | Transport & logistics | 2025 |
| Apollo Secure Air Ltd | Construction | 2025 |
| Apoorva Foods Limited | Wholesale & retail | 2019 |
| Appetite Warriors Ltd | Hospitality | 2018 |
| Appleblade Limited | Administrative & support | 2024 |
| Applexus Technologies Ltd | Information & communication | 2014 |
| Apprenticeship Staff Ltd | Administrative & support | 2022 |
| Approach Design Ltd | Construction | 2026 |
| Approximate Limited | Wholesale & retail | 2024 |
| Apricus Spaces Limited | Construction | 2022 |
| Apxcel Freight Services Ltd | Administrative & support | 2020 |
| Apxl Limited | Education | 2020 |
| AQ Beads UK Ltd | Wholesale & retail | 2015 |
| Aqam Limited | Transport & logistics | 2016 |
| Aqret Accounting & Consultancy Services Limited | Professional & scientific | 2008 |
| Aqua Basil Shipping Line UK Ltd | Transport & logistics | 2026 |
| Aqua Karma Properties Limited | Real estate | 2014 |
| Aqua Lotus Ltd | Health & social care | 2018 |
| Aqua Organics Limited | Wholesale & retail | 2025 |
| Aqua Technologies (Europe) Limited | Construction | 2010 |
| Aqua Technologies (M&E) Limited | Construction | 2011 |
| Aquilax Group Ltd | Information & communication | 2026 |
| AR Bhatia Ltd | Wholesale & retail | 2013 |
| AR Build Ltd | Construction | 2018 |
| AR Cars Club Limited | Wholesale & retail | 2017 |
| AR Chaat and Dessert Ltd | Hospitality | 2022 |
| AR Design & Building Ltd | Construction | 2024 |
| AR Holistics Ltd | Other services | 2022 |
| AR Information Technology Ltd | Information & communication | 2018 |
| AR Real Estate Group Limited | Real estate | 2024 |
| AR Spin LAB Ltd | Education | 2026 |
| AR Tradline Ltd | Wholesale & retail | 2017 |
| AR14 Services Ltd | Professional & scientific | 2022 |
| AR3 Ltd | Professional & scientific | 2025 |
| Araj London Investments Ltd | Construction | 2025 |
| Arama Partners Ltd | Professional & scientific | 2018 |
| Arasha Limited | Wholesale & retail | 2025 |
| Aravind Constructions Limited | Construction | 2025 |
| Arban Construction Ltd | Construction | 2022 |
| ARC ROC Ltd | Administrative & support | 2024 |
| ARCADES2U Ltd | Administrative & support | 2024 |
| Arch Estate Ltd | Real estate | 2020 |
| Arch Global Consulting Ltd | Information & communication | 2014 |
| Arch Properties Ltd | Real estate | 2014 |