| AL Ansar Ltd | Hospitality | 2020 |
| AL Asam Enterprises Ltd | Wholesale & retail | 2026 |
| Al-Hilley Marine Services Limited | Professional & scientific | 2009 |
| Al-Kem Ltd | Real estate | 2026 |
| Aladin Ltd | Real estate | 2016 |
| Alagold Investments Ltd | Wholesale & retail | 2025 |
| Alan Mini Market (Blackpool) Ltd | Wholesale & retail | 2025 |
| Alan Thurley Roofing Contractors Limited | Construction | 2004 |
| Alan's Burgers Limited | Hospitality | 2018 |
| Aland Barber Blackpool Ltd | Other services | 2023 |
| Alaoui Property Group Ltd | Real estate | 2022 |
| Albert Hotel (Blackpool) Limited | Hospitality | 2019 |
| Alberts Hotel Suites Ltd | Hospitality | 2025 |
| Alberts Snacks Ltd | Wholesale & retail | 2025 |
| Albionarc Talent Ltd | Administrative & support | 2023 |
| ALC Roofing Ltd | Construction | 2022 |
| Alca Digital Ltd | Wholesale & retail | 2026 |
| Alcapone Ltd | Hospitality | 2014 |
| Alcf Cleveleys Limited | Hospitality | 2024 |
| Alder Vale Living Ltd | Health & social care | 2026 |
| Aldon Construction Company Limited | Extraterritorial | 1956 |
| Alen Marine Ltd | Extraterritorial | 2024 |
| Alert Brands Ltd | Other services | 2020 |
| Alessandro Pugi Ltd | Information & communication | 2015 |
| Alessys Limited | Other services | 2025 |
| Alexander Hotel Blackpool Ltd | Hospitality | 2021 |
| Alexander Hotel BPL Ltd | Hospitality | 2021 |
| Alexandra Care (Leicester) Limited | Health & social care | 2014 |
| Alexandra Court Management Company (Blackpool) Limited | Households | 1977 |
| Alexandra James Apartments Ltd | Real estate | 2020 |
| Alexandra James Properties Limited | Real estate | 2017 |
| Alexandra Nursing Home Limited | Health & social care | 2004 |
| Alexandra Specialist Care Limited | Health & social care | 2012 |
| Alexandra Sweet Hotel Limited | Hospitality | 2023 |
| Alexei's Data Consultancy Ltd | Information & communication | 2013 |
| Alfred James Consulting Ltd | Hospitality | 2018 |
| ALI Taylor Golf Ltd | Information & communication | 2021 |
| Alien Magic Limited | Manufacturing | 2016 |
| Alinaz Property Ltd | Real estate | 2020 |
| Alison Leigh Grundy Limited | Extraterritorial | 2025 |
| Alison's Catering Ltd | Hospitality | 2023 |
| Alisoncraine Limited | Extraterritorial | 2025 |
| Alkhashan Ltd | Administrative & support | 2012 |
| ALL 5 Star Facilities Ltd | Real estate | 2023 |
| ALL Build and Roof Limited | Construction | 2026 |
| ALL in Maintenance Services Limited | Administrative & support | 2007 |
| ALL in One (Blackpool) Limited | Construction | 2023 |
| ALL OUT Group Limited | Wholesale & retail | 2018 |
| ALL Pro Damp Proofing Blackpool Ltd | Construction | 2026 |
| ALL Star Tree & Landscapes Ltd | Administrative & support | 2025 |
| ALL Tax Rebates Ltd | Professional & scientific | 2022 |
| ALL Utilities Limited | Wholesale & retail | 2002 |
| ALL- Brite Cleaning Services (BPL) Ltd | Administrative & support | 2013 |
| All-Sparxx Ltd | Professional & scientific | 2026 |
| Allan Morris Transport Limited | Transport & logistics | 1982 |
| Allans Landscapes Ltd | Administrative & support | 2020 |
| Allets Ltd | Real estate | 2024 |
| Allfour Invested Ltd | Wholesale & retail | 2025 |
| Allied Metal Products Ltd | Wholesale & retail | 2025 |
| Allium Lending Group Limited | Financial services | 2016 |
| Allium Money Limited | Financial services | 2017 |
| Allplay Kinetics Ltd | Manufacturing | 2022 |
| Allserve Blackpool Limited | Other services | 2019 |
| Allthingzcute Ltd | Wholesale & retail | 2025 |
| Allton Distributions Ltd | Wholesale & retail | 2026 |
| Alltrade Logistics Ltd | Transport & logistics | 2024 |
| Alluri Consulting Ltd | Information & communication | 2018 |
| Allvisual Ltd | Other services | 2023 |
| ALM Mechanics Ltd | Information & communication | 2016 |
| Alpenhof (Preston) Limited | Hospitality | 1986 |
| Alpha Brothers International Ltd | Hospitality | 2025 |
| Alpha Building Refurbs Ltd | Construction | 2026 |
| Alpha Car Collections Ltd | Transport & logistics | 2018 |
| Alpha L.Y. Ltd | Information & communication | 2017 |
| Alpha Performance Limited | Wholesale & retail | 2019 |
| Alpha Property Company Limited | Real estate | 1996 |
| Alphas Property Ltd | Real estate | 2021 |
| Alpher Industries UK Ltd | Wholesale & retail | 2025 |
| Alpscool Industries UK Limited | Manufacturing | 2023 |
| Alrizq Solutions Ltd | Other services | 2013 |
| ALS Property Lettings Ltd | Real estate | 2020 |
| Alscotedna Ltd | Wholesale & retail | 2025 |
| Alshahebander Company Limited | Hospitality | 2023 |
| Alta Vita Events Ltd | Arts & recreation | 2024 |
| Alternative Access, Rigging & Scaffold Solutions Limited | Construction | 2017 |
| Alternative Illustrated Limited | Professional & scientific | 2024 |
| ALTERNATIVE3 Ltd | Hospitality | 2024 |
| Altos Properties Limited | Real estate | 2010 |
| Alvanley Properties Limited | Construction | 2017 |
| Alvanta Limited | Administrative & support | 2026 |
| Alvee Limited | Administrative & support | 2026 |
| Alvercrest Limited | Professional & scientific | 2012 |
| Alvson Ltd | Real estate | 2024 |
| Always With YOU Ltd | Wholesale & retail | 2020 |
| Alweb Limited | Information & communication | 2019 |
| Alyn's Garage Ltd | Wholesale & retail | 2024 |
| AM Labs Ltd | Manufacturing | 2025 |
| AM Transport (Holdings) Limited | Professional & scientific | 2020 |
| Amanda J Thompson Limited | Arts & recreation | 2008 |
| Amanda Towers and Company Accountants FT Limited | Professional & scientific | 2023 |