| Avidavit Production Limited | Arts & recreation | 2018 |
| Avig Limited | Real estate | 2023 |
| Avigail Properties Limited | Real estate | 2020 |
| Aville Services Ltd | Information & communication | 2022 |
| Avimax Limited | Wholesale & retail | 2019 |
| Avimmerse Ltd | Information & communication | 2019 |
| Aviora Trading Ltd | Other services | 2025 |
| Avisco Limited | Wholesale & retail | 2013 |
| Avisen Consulting Ltd | Professional & scientific | 2025 |
| Aviv Global Relocations Ltd | Administrative & support | 2023 |
| Aviva Finley Limited | Professional & scientific | 2005 |
| Aviva Investors Pensions Limited | Financial services | 1972 |
| Aviva Liverpool Church Ltd | Education | 2023 |
| Aviva Manchester Church Ltd | Education | 2020 |
| Aviva Properties Limited | Real estate | 2011 |
| AVJ Clothing Limited | Wholesale & retail | 2025 |
| Avjcm Ltd | Health & social care | 2020 |
| AVK Joiners Ltd | Construction | 2021 |
| AVK Ltd | Health & social care | 2007 |
| AVK Realty Ltd | Real estate | 2026 |
| AVK Solutions Ltd | Professional & scientific | 2023 |
| AVL Services Limited | Professional & scientific | 2025 |
| Avlos Stay Ltd | Hospitality | 2025 |
| AVM Capital Limited | Information & communication | 2016 |
| Avmdc Limited | Administrative & support | 2026 |
| Avmn Enterprise Ltd | Hospitality | 2019 |
| Avner Sayada Accountants (Edgware) Limited | Extraterritorial | 2017 |
| Avner Sayada Accountants Ltd | Extraterritorial | 2008 |
| Avoca Motor Products Limited | Wholesale & retail | 2004 |
| Avocate Legal French Services Ltd | Professional & scientific | 2020 |
| Avocet Clearance Limited | Transport & logistics | 2020 |
| Avocet Group Holdings Limited | Financial services | 2025 |
| Avoir Couture Ltd | Wholesale & retail | 2013 |
| Avolza Ltd | Wholesale & retail | 2026 |
| Avon Carpentry Ltd | Manufacturing | 2022 |
| Avondale Advanced Waste Treatment Limited | Water & waste | 2008 |
| Avondale Holdings Limited | Water & waste | 1993 |
| Avondale Motors (NE) Limited | Wholesale & retail | 2011 |
| Avondale Properties (Southport) Ltd | Construction | 2017 |
| Avora Construction Limited | Construction | 2020 |
| Avora Healthcare Ltd | Health & social care | 2023 |
| Avora Housing Ltd | Other services | 2023 |
| Avora Services Limited | Health & social care | 2025 |
| Avora Trading Limited | Wholesale & retail | 2026 |
| Avorsoft Ltd | Information & communication | 2021 |
| Avplacements Ltd | Administrative & support | 2021 |
| Avrac (NO 1) Limited | Financial services | 2022 |
| Avrex Limited | Hospitality | 2023 |
| Avriki Estates Limited | Real estate | 2017 |
| Avriki Estates SUB Ltd | Real estate | 2026 |
| Avril Rodrigues Limited | Health & social care | 2005 |
| Avril's Fortunes Limited | Other services | 2011 |
| Avrio World Ltd | Administrative & support | 2024 |
| Avrk Investment Limited | Real estate | 2022 |
| Avro Building Management Company Limited | Households | 2018 |
| Avro Calveley Limited | Administrative & support | 2018 |
| Avro Hollows Tenant Management Organisation Limited | Households | 2007 |
| Avro Owners (Manchester) Limited | Real estate | 2023 |
| Avro UK Aerospace Ltd | Transport & logistics | 2013 |
| Avromat Ltd | Real estate | 2025 |
| AVS Construction Ltd | Construction | 2014 |
| AVS Fire Protection Limited | Construction | 2014 |
| AVS Properties Manchester Limited | Real estate | 2018 |
| Avscd Limited | Administrative & support | 2026 |
| Avsen Limited | Wholesale & retail | 2023 |
| Avsl (Asia) Ltd | Extraterritorial | 2009 |
| Avsl (HK) Ltd | Extraterritorial | 2009 |
| Avsl Group (Holdings) Limited | Financial services | 2018 |
| Avsl Group Limited | Wholesale & retail | 1998 |
| Avtec Flight Training Europe Limited | Transport & logistics | 2018 |
| AVV. Spitali Ltd | Real estate | 2014 |
| Avyelle International Media Ltd | Other services | 2022 |
| AW (Berwick) Ltd | Wholesale & retail | 2023 |
| AW (Bovey Tracey) Limited | Wholesale & retail | 2023 |
| AW (Cramlington) Limited | Wholesale & retail | 2023 |
| AW (Healey) Limited | Wholesale & retail | 2023 |
| AW (Longhill) Limited | Wholesale & retail | 2023 |
| AW (Mount Road) Ltd | Wholesale & retail | 2024 |
| AW (Shepway) Ltd | Wholesale & retail | 2024 |
| AW (Skipton) Limited | Wholesale & retail | 2024 |
| AW (Swindon) Limited | Health & social care | 2023 |
| AW (Tweedmouth) Ltd | Wholesale & retail | 2024 |
| AW (Wallasey) Limited | Health & social care | 2023 |
| AW Capital Limited | Professional & scientific | 2019 |
| AW Communication Global Ltd | Information & communication | 2021 |
| AW Construction Management Services Ltd | Construction | 2024 |
| AW Demolition Limited | Construction | 2013 |
| AW Fashion Limited | Wholesale & retail | 2024 |
| AW Joinery (Building Services) Ltd | Construction | 1999 |
| AW Real Estate 2 Limited | Real estate | 2022 |
| AW Real Estate 3 Limited | Real estate | 2024 |
| AW Real Estate 4 Limited | Real estate | 2025 |
| AW Real Estate Limited | Financial services | 2020 |
| AWA Industry Parts Ltd | Wholesale & retail | 2024 |
| AWA Props Ltd | Real estate | 2021 |
| AWAAWAA2 Foundation Ltd | Education | 2024 |
| Awaaz Enterprises Ltd | Education | 2000 |
| Awad Pharma Limited | Wholesale & retail | 2024 |
| Awaden IT Solutions Ltd | Information & communication | 2024 |
| Awadh Mohammed Hussein Fulais and Partner Ltd | Wholesale & retail | 2025 |