| Avory Smith Ltd | Real estate | 2019 |
| Avots C.I.C. | Professional & scientific | 2026 |
| Avrix Ltd | Information & communication | 2025 |
| Avsun Properties Limited | Real estate | 2026 |
| Avtar & HL Estate Ltd | Financial services | 2026 |
| AVU Investments Limited | Real estate | 2012 |
| Avura Skincare Ltd | Manufacturing | 2026 |
| Avvanti Nepalese Tapas and Grill Ltd | Hospitality | 2025 |
| AVW Fabrications Limited | Manufacturing | 1988 |
| Avysia Healthcare Ltd | Wholesale & retail | 2025 |
| AW Digital Templating Services Ltd. | Construction | 2017 |
| AW Window Installations Limited | Manufacturing | 2010 |
| Awan Services Limited | Wholesale & retail | 1946 |
| Awano Ltd | Wholesale & retail | 2025 |
| Award Property Ltd | Real estate | 2024 |
| Awasum Services Limited | Administrative & support | 2019 |
| Awesome Chips Ltd | Hospitality | 2017 |
| AWK Barbers Ltd | Other services | 2023 |
| AWM Lettings Limited | Administrative & support | 2013 |
| Awty Maughan Design Ltd | Professional & scientific | 2026 |
| Awwal Accounts Limited | Professional & scientific | 2013 |
| Awwmybubba Ltd | Wholesale & retail | 2024 |
| AX Logistic Ltd | Transport & logistics | 2024 |
| AX400 Ltd | Wholesale & retail | 2023 |
| Axali Properties Ltd | Real estate | 2023 |
| Axcess Capital Ltd | Professional & scientific | 2016 |
| AXE & Angle Constructions Limited | Construction | 2026 |
| Axearise Ltd | Administrative & support | 2023 |
| Axel Books Limited | Wholesale & retail | 2020 |
| Axel Corporations Limited | Real estate | 2020 |
| Axel Homes Ltd | Real estate | 2024 |
| Axia Brands Ltd | Wholesale & retail | 2025 |
| Axilium Animis Ltd | Wholesale & retail | 2026 |
| Axiltia Consulting Limited | Administrative & support | 2015 |
| Axiom (Leicester) Limited | Financial services | 2008 |
| Axiom Energy Limited | Professional & scientific | 2021 |
| Axiom Retail Interiors Limited | Construction | 2006 |
| Axiom Wholesale Ltd | Wholesale & retail | 2025 |
| Axion Developments Ltd | Real estate | 2025 |
| Axionzonn Ltd | Wholesale & retail | 2026 |
| Axis Cargo Limited | Transport & logistics | 2024 |
| Axiscades UK Ltd | Professional & scientific | 1993 |
| Axle Developments Limited | Construction | 2021 |
| AXLR8 Alternative Education Provision Ltd | Education | 2026 |
| AXLR8 Road User Education Project CIC | Education | 2011 |
| Axon Architects Ltd | Professional & scientific | 2012 |
| Axon Steel Group Ltd | Financial services | 2026 |
| Axondale Ltd | Real estate | 2012 |
| Axunet Solutions Ltd | Information & communication | 2022 |
| Axxon Group Limited | Information & communication | 2023 |
| AY Capital Managment Ltd | Education | 2022 |
| AY Executive Search Ltd | Administrative & support | 2024 |
| AYA Foods Drinks Ltd | Wholesale & retail | 2024 |
| AYA Market Place Ltd | Wholesale & retail | 2025 |
| Ayaan Boutique Ltd | Wholesale & retail | 2024 |
| Ayaan Fabrics Ltd | Wholesale & retail | 2001 |
| Ayaan Investments Ltd | Construction | 2014 |
| Ayaana Investment Ltd | Real estate | 2026 |
| Ayada Properties Ltd | Real estate | 2024 |
| Ayah Legal Services Limited | Professional & scientific | 2025 |
| Ayan Development Ltd | Real estate | 2016 |
| Ayanpetku Ltd | Hospitality | 2024 |
| Aycem Textiles UK Limited | Wholesale & retail | 2018 |
| Aycie Limited | Construction | 2024 |
| Ayesha Iqra Limited | Health & social care | 2009 |
| Ayesha Jaspal Limited | Hospitality | 2017 |
| Ayeshaas Ltd | Health & social care | 2023 |
| AYI Locum Services Ltd | Health & social care | 2020 |
| AYK Advisory Limited | Financial services | 2026 |
| AYK Retail Ltd | Wholesale & retail | 2024 |
| Ayla Clinic Ltd | Health & social care | 2025 |
| Ayla London Limited | Wholesale & retail | 2023 |
| Ayla Travel Ltd | Transport & logistics | 2023 |
| Aylan Supermarket Ltd | Wholesale & retail | 2023 |
| Aylestone Angels Childcare Ltd | Health & social care | 2023 |
| Aylestone Athletic Rugby Football Club Limited | Arts & recreation | 2015 |
| Aylestone Grange Ltd | Health & social care | 2013 |
| Aylestone Mini Market Ltd | Wholesale & retail | 2026 |
| Aylestone Park FC Seniors Ltd | Other services | 2020 |
| Aylestone Park Sports Bar Limited | Wholesale & retail | 2022 |
| Aylestone Shop Ltd | Wholesale & retail | 2025 |
| Aylestone Spice Leicester Limited | Other services | 2020 |
| Aylestone Spice Ltd | Hospitality | 2025 |
| Aylestone ST James (Management) Rugby Football Club Limited | Arts & recreation | 2010 |
| Aylestone ST James Rugby Football Club Limited | Arts & recreation | 2010 |
| Aylestone Taxi Ltd | Transport & logistics | 2011 |
| Aylestone Transport Limited | Transport & logistics | 1966 |
| AYM Cars Ltd | Wholesale & retail | 2026 |
| AYM Marketing Ltd | Professional & scientific | 2026 |
| Ayma Investment Ltd | Real estate | 2025 |
| Aymestra Ltd | Wholesale & retail | 2025 |
| Aymro Mortors Ltd | Wholesale & retail | 2023 |
| Aymsmart Limited | Construction | 2013 |
| Ayoka Foods Ltd | Hospitality | 2026 |
| Ayonkosi Limited | Real estate | 2022 |
| Ayotol Company Ltd | Wholesale & retail | 2025 |
| AYP Importers Limited | Wholesale & retail | 2017 |
| AYR Accomplishments Ltd | Transport & logistics | 2015 |
| Ayra Tiles Ltd | Wholesale & retail | 2025 |
| Ayramara Limited | Financial services | 2025 |