| Auvesta UK Limited | Other services | 2016 |
| Auxiliary First Care Ltd | Public administration | 2021 |
| Auzaro Ventures Ltd | Wholesale & retail | 2025 |
| AV Drywall Ltd | Construction | 2020 |
| AV Investments (Midlands) Limited | Real estate | 2009 |
| Ava's CUT Ltd | Other services | 2025 |
| Avalon Snus Ltd | Wholesale & retail | 2026 |
| Avan Health Group Limited | Other services | 2021 |
| Avant Accounting UK Limited | Professional & scientific | 2025 |
| Avante Midlands Limited | Manufacturing | 2009 |
| Avantglamp Holdings Ltd | Other services | 2023 |
| Avantglamp Mullion Ltd | Hospitality | 2024 |
| Avantglamp Resorts Limited | Hospitality | 2023 |
| Avanti Catering Recruitment Limited | Hospitality | 2018 |
| Avaro Electrical Limited | Construction | 2022 |
| Avautomotivs Ltd | Wholesale & retail | 2017 |
| AVC (Investments) Limited | Real estate | 2019 |
| AVD Fire Limited | Public administration | 2023 |
| Avdec Limited | Information & communication | 2001 |
| Avenea Ltd | Wholesale & retail | 2025 |
| Aventa Travels Limited | Administrative & support | 2024 |
| Aventine Consultancy Ltd | Information & communication | 2025 |
| Avenue Road Doncaster Ltd | Real estate | 2018 |
| Aviadics Ltd | Information & communication | 2025 |
| Aviator Express Ltd | Transport & logistics | 2019 |
| Avory Shire Ltd | Wholesale & retail | 2003 |
| Avroplus Ltd | Wholesale & retail | 2025 |
| AVT Property Ltd | Real estate | 2017 |
| AVW Property Services Ltd | Construction | 2025 |
| AW & BL Property Holdings Limited | Real estate | 2025 |
| AW Anaesthesia Services Ltd | Manufacturing | 2012 |
| AW Heritage Limited | Real estate | 2016 |
| AW Holdings INT Ltd | Financial services | 2024 |
| AW Quality Care Consultant, Learning Disability, and Autism Services Ltd | Health & social care | 2025 |
| Awal & Sons Ltd | Administrative & support | 2012 |
| Awan Carpet and Furniture Limited | Wholesale & retail | 2018 |
| Awan's Travel Ltd | Transport & logistics | 2026 |
| Awan@Transport Ltd | Manufacturing | 2025 |
| Awarding Body Ltd | Information & communication | 2025 |
| Aware Digital Ltd | Information & communication | 2018 |
| Aware Group Ltd | Extraterritorial | 2023 |
| Aware Hosting Ltd | Extraterritorial | 2023 |
| Aware Marketing Ltd | Information & communication | 2023 |
| Aware Property Ltd | Real estate | 2021 |
| Awat Trading Ltd | Wholesale & retail | 2022 |
| AWD Customs Ltd | Wholesale & retail | 2023 |
| AWE Direct Limited | Manufacturing | 2001 |
| Awehome Investments Ltd | Real estate | 2019 |
| Awexia Ltd | Wholesale & retail | 2025 |
| AWL Consulting Ltd | Administrative & support | 2017 |
| AWN Cars Ltd | Wholesale & retail | 2024 |
| Awour Limited | Health & social care | 2022 |
| Awscape Ltd | Professional & scientific | 2018 |
| AXE Sports Ltd | Wholesale & retail | 2026 |
| Axion Nexus Ltd | Information & communication | 2018 |
| Axis Dimensions Ltd | Professional & scientific | 2018 |
| Axo-Met Ltd | Wholesale & retail | 2016 |
| Axon Build Ltd | Construction | 2026 |
| Axon Projects Ltd | Construction | 2026 |
| AY UP Duck Media Ltd | Information & communication | 2020 |
| Ayesha Boutique Ltd | Wholesale & retail | 2025 |
| Ayna B Ltd | Wholesale & retail | 2024 |
| Ayna Stoke Ltd | Hospitality | 2024 |
| Aynsley Blue Limited | Real estate | 2018 |
| Aynsley Business Park Limited | Real estate | 2023 |
| Aynsley Commercial Limited | Real estate | 2017 |
| Aynsley Lodge Limited | Real estate | 2018 |
| Aynsley Retail Limited | Real estate | 2017 |
| Aynsley Square Limited | Real estate | 2017 |
| Ayre-Flow CRM Consulting Ltd | Information & communication | 2026 |
| AYS Academic Services Limited | Education | 2020 |
| Aysak Ltd | Wholesale & retail | 2025 |
| Azadi Apparel Ltd | Wholesale & retail | 2025 |
| Azaria Care Services Limited | Health & social care | 2015 |
| Azarve Limited | Information & communication | 2013 |
| AZR Group Ltd | Financial services | 2026 |
| Azure Inspection Ltd | Professional & scientific | 2022 |
| Azure Professional Services Limited | Professional & scientific | 2013 |
| Azure TAN Ltd | Other services | 2023 |
| AZZ Investings Limited | Wholesale & retail | 2021 |
| B & a Daniels & Sons Ltd | Agriculture & fishing | 2023 |
| B & D Home Improvements Ltd | Construction | 2019 |
| B & E Engineering Ltd | Manufacturing | 2006 |
| B & R Properties Stoke Limited | Real estate | 2018 |
| B & T Properties Ltd | Real estate | 2024 |
| B a Property Investments Ltd | Hospitality | 2022 |
| B and L Electrical (Holdings) Limited | Financial services | 2012 |
| B and L Electrical Group Limited | Financial services | 2023 |
| B and R Builders Ltd | Manufacturing | 2026 |
| B D S (Stoke-On-Trent) Limited | Administrative & support | 2001 |
| B Flare Limited | Wholesale & retail | 2024 |
| B Flawless Ltd | Other services | 2017 |
| B Gee's Landscaping, Groundworks & Roofing Limited | Construction | 2026 |
| B Grindey Limited | Wholesale & retail | 2018 |
| B Hygienic Limited | Water & waste | 1999 |
| B Morton Holdings Ltd | Information & communication | 2020 |
| B P S.Com Ltd | Manufacturing | 2008 |
| B R Staffs Group Ltd | Manufacturing | 2022 |
| B S Limer Haulage Ltd | Transport & logistics | 2022 |
| B Spoke Fragrancing Limited | Wholesale & retail | 2025 |