| Awesome Quotes Ltd | Manufacturing | 2023 |
| AWF Electrical Contractors Ltd | Construction | 2016 |
| AWF Property Limited | Real estate | 2024 |
| AWH Investments Limited | Real estate | 2023 |
| AWK Investments Group Limited | Real estate | 2022 |
| AWK Investments Limited | Real estate | 2020 |
| AWM Creations Ltd | Wholesale & retail | 2024 |
| Awm-Ifa Ltd | Professional & scientific | 2017 |
| AWO Igbani Healthcare Ltd | Health & social care | 2018 |
| Awoowe Ltd | Transport & logistics | 2024 |
| Awowe Ltd | Transport & logistics | 2025 |
| AWP Boiler Installations Ltd | Construction | 2015 |
| AWP Consultancy Limited | Information & communication | 2022 |
| Awps Property Services Ltd | Households | 2012 |
| AWS Recycling Ltd | Water & waste | 2003 |
| Awsm Global Services Ltd | Wholesale & retail | 2025 |
| Awspharm Limited | Health & social care | 2022 |
| AWT Hold Co Ltd | Construction | 2016 |
| Awuyahstar Transport Ltd | Transport & logistics | 2016 |
| AWY Limited | Real estate | 2026 |
| Awyas Ltd | Wholesale & retail | 2020 |
| AX Automotive Limited | Extraterritorial | 2004 |
| AX Group Ltd | Wholesale & retail | 2016 |
| AX Pharma Ltd | Wholesale & retail | 2023 |
| AX10 Group Ltd | Administrative & support | 2019 |
| AX3 Consulting Ltd | Professional & scientific | 2020 |
| AX3 Properties Ltd | Real estate | 2024 |
| Axanthis Ltd | Transport & logistics | 2022 |
| AXC Protection Ltd. | Transport & logistics | 2022 |
| Axcess TEN Limited | Information & communication | 2000 |
| Axco Insurance Information Services Limited | Financial services | 1995 |
| Axel Real Estate Limited | Real estate | 2025 |
| Axel's Property Services Ltd | Real estate | 2022 |
| Axel's Trading Company Limited | Wholesale & retail | 2005 |
| Axent Washrooms & Interiors Limited | Construction | 2019 |
| Axeperience Birmingham Limited | Administrative & support | 2023 |
| AXG Consulting Ltd | Professional & scientific | 2026 |
| AXH Heating Ltd | Construction | 2025 |
| AXH Housing Ltd | Real estate | 2024 |
| AXI Limited | Information & communication | 2004 |
| AXI Logistics Ltd | Wholesale & retail | 2022 |
| Aximia Solutions Limited | Information & communication | 2025 |
| Axiom Advisers Limited | Professional & scientific | 2016 |
| Axiom Construct Limited | Construction | 2018 |
| Axiom Damage Assessors Ltd | Other services | 2025 |
| Axiom Enterprises Limited | Health & social care | 2016 |
| Axiom Investments Limited | Real estate | 2018 |
| Axiom Nexus Ltd | Real estate | 2025 |
| Axiom Productions Ltd | Arts & recreation | 2014 |
| Axiom Special Advisory Services Ltd | Professional & scientific | 2013 |
| Axiom UK Topco Limited | Financial services | 2019 |
| Axion Automation Limited | Administrative & support | 2020 |
| Axion Carrier Services Ltd | Information & communication | 2025 |
| Axion Motors Limited | Wholesale & retail | 2026 |
| Axios Building Consultants Limited | Professional & scientific | 2014 |
| Axios Building Projects Ltd | Administrative & support | 2023 |
| Axios Care Homes Ltd | Health & social care | 2024 |
| Axiovest Limited | Financial services | 2024 |
| Axis Alliance Ltd | Information & communication | 2014 |
| Axis Asset Management Limited | Construction | 2026 |
| Axis Logistics Limited | Transport & logistics | 2019 |
| Axis Pentest Ltd | Information & communication | 2018 |
| Axis Security Ltd | Administrative & support | 2019 |
| Axis Studio Limited | Other services | 2011 |
| Axis Synergy Ltd | Wholesale & retail | 2024 |
| Axl-M Ltd | Other services | 2024 |
| Axlewood Investments Ltd | Construction | 2017 |
| AXN Fitness Ltd | Wholesale & retail | 2025 |
| Axolotl Clinic Ltd | Health & social care | 2025 |
| Axonar Ltd | Extraterritorial | 2015 |
| Axonify UK Ltd | Information & communication | 2024 |
| Axora Properties Ltd | Real estate | 2025 |
| AXS Designs Limited | Manufacturing | 2025 |
| AXS Labs Ltd | Information & communication | 2026 |
| Axten Ltd | Wholesale & retail | 2025 |
| Axuvo Ltd | Information & communication | 2019 |
| Axxco Ltd | Real estate | 2023 |
| AY Community Hub CIC | Real estate | 2025 |
| AY Holdings Ltd | Real estate | 2017 |
| AY Holdings Properties Ltd | Real estate | 2025 |
| AY Mercy Hub Limited | Health & social care | 2024 |
| AY Removal Services Ltd | Transport & logistics | 2023 |
| AY Therapy Services Ltd | Health & social care | 2025 |
| AY Trend Hub Ltd | Wholesale & retail | 2025 |
| AY UK Enterprises Limited | Real estate | 2024 |
| Ay&I Ltd | Professional & scientific | 2020 |
| AYA (Midlands) ) Ltd | Hospitality | 2017 |
| AYA Academy Ltd | Education | 2023 |
| AYA Builder Ltd | Construction | 2023 |
| AYA Consultancy Ltd | Information & communication | 2022 |
| AYA Estates Ltd | Real estate | 2026 |
| AYA Real Estate Limited | Real estate | 2017 |
| Aya.I Limited | Hospitality | 2025 |
| Ayaan Autos Ltd | Wholesale & retail | 2026 |
| Ayaan Costcutter Limited | Wholesale & retail | 2014 |
| Ayaan Fashion Ltd | Wholesale & retail | 2022 |
| Ayaan Management Ltd | Real estate | 2023 |
| Ayaan T Holdings Ltd | Financial services | 2022 |
| Ayaan Transport UK Ltd | Transport & logistics | 2017 |
| Ayaan's Investment Group Ltd | Financial services | 2020 |