| Alchita Care Limited | Health & social care | 2014 |
| ALD Auctions Ltd | Wholesale & retail | 2021 |
| Alderson Holdings Ltd | Real estate | 2025 |
| ALE Mary Limited | Hospitality | 2025 |
| Alea Holdings Limited | Real estate | 2021 |
| Alectrifix Limited | Construction | 2015 |
| Aleema X Ltd | Real estate | 2024 |
| Aleena & Hamaad Ahmed Ltd | Administrative & support | 2017 |
| Aleevery Care Services Ltd | Health & social care | 2025 |
| Aleeza Alam Limited | Health & social care | 2022 |
| Aleks Smiles Ltd | Health & social care | 2024 |
| Alertzone Limited | Wholesale & retail | 2024 |
| Alex Reid Limited | Other services | 1971 |
| Alex Transp BV Limited | Transport & logistics | 2016 |
| Alex Truck Ltd | Transport & logistics | 2018 |
| Alexander Commercial Ltd | Real estate | 2019 |
| Alexander Financial Solutions Ltd | Financial services | 2018 |
| Alexander Heath Fielding Ltd | Hospitality | 2025 |
| Alexander House BFD Limited | Real estate | 2020 |
| Alexander House Management Ltd | Real estate | 2021 |
| Alexander Noble Ltd | Real estate | 2010 |
| Alexanders Motors Limited | Administrative & support | 2020 |
| Alexandra Erleigh Ltd | Real estate | 2026 |
| Alexandras Palace Ltd | Hospitality | 2022 |
| Alexia Logistics Ltd | Transport & logistics | 2019 |
| Alexian Properties Ltd | Real estate | 2025 |
| Alfa Echarge Ltd | Manufacturing | 2017 |
| Alfa H3 Ltd | Real estate | 2025 |
| Alfa HG Ltd | Real estate | 2025 |
| Alfa Smart Energy Ltd | Administrative & support | 2017 |
| Alfafado Limited | Administrative & support | 2008 |
| Alfie Maxwell Limited | Wholesale & retail | 2025 |
| Alfies Stores Ltd | Wholesale & retail | 2021 |
| Alfiman Limited | Administrative & support | 2007 |
| Alfredo Heras Limited | Wholesale & retail | 2018 |
| Alfurat Building Ltd | Construction | 2025 |
| ALG Caravans & Motorhomes Ltd | Wholesale & retail | 2025 |
| Algorithm Marketing BFD Limited | Professional & scientific | 2022 |
| Algorithmi Research Ltd | Education | 2021 |
| Algorithmic Ltd | Professional & scientific | 2026 |
| Algulhar Ltd | Wholesale & retail | 2025 |
| Alhajaz Travel Ltd | Administrative & support | 2025 |
| Alhamad Courier Ltd | Transport & logistics | 2024 |
| Alhuda Bradford Ltd | Education | 2017 |
| Alhuda Logistics Limited | Wholesale & retail | 2025 |
| ALI & Co Solicitors Ltd | Professional & scientific | 2018 |
| ALI & Co Travels Ltd | Transport & logistics | 2023 |
| ALI Asghar Properties Ltd | Real estate | 2025 |
| ALI Baba Carpets & Furniture Limited | Extraterritorial | 2016 |
| ALI Baba Furniture Limited | Wholesale & retail | 2012 |
| ALI Bokhari Ince Ltd | Transport & logistics | 2024 |
| ALI Bros Foods Ltd | Wholesale & retail | 2025 |
| ALI Eyecare Limited | Health & social care | 2025 |
| ALI Healthcare Resources Limited | Health & social care | 2015 |
| ALI Pharmahealth Limited | Health & social care | 2019 |
| ALI Place Ltd | Real estate | 2024 |
| ALI Plumbing & Building Ltd | Construction | 2023 |
| ALI Raza Consultancy Limited | Professional & scientific | 2025 |
| ALI Raza Rajput Ltd | Wholesale & retail | 2024 |
| ALI Red Limited | Administrative & support | 2017 |
| ALI Sher Ltd | Professional & scientific | 2023 |
| ALI Software Consultancy Ltd | Information & communication | 2021 |
| Ali's Desi Catering Ltd | Hospitality | 2024 |
| Ali's Food (Yorkshire) Limited | Wholesale & retail | 2017 |
| Ali's Sweets Limited | Wholesale & retail | 2023 |
| Ali's Takeaway Bradford Ltd | Hospitality | 2025 |
| Ali-Asghar Group Ltd | Real estate | 2024 |
| Alibaaziz Holdings PVT Ltd | Real estate | 2024 |
| Alibargainstore Ltd | Wholesale & retail | 2026 |
| Alicore Limited | Administrative & support | 2026 |
| Alieu Baldeh Delivery Ltd | Transport & logistics | 2026 |
| Alif Accounting and Tax Consultants Limited | Information & communication | 2025 |
| Alif Properties Services Ltd | Other services | 2015 |
| Alif&Son Ltd | Professional & scientific | 2026 |
| Aliga Ltd | Health & social care | 2025 |
| Alina Quality Care Ltd | Public administration | 2025 |
| Alis Butchers Ltd | Wholesale & retail | 2025 |
| Alishaan Limited | Hospitality | 2019 |
| Alishanawaz Ltd | Wholesale & retail | 2025 |
| Alisoncare Ltd | Health & social care | 2023 |
| Alisons Desserts Limited | Wholesale & retail | 2021 |
| Alisons Food Limited | Manufacturing | 2025 |
| Alisons Ice-Cream Limited | Hospitality | 2012 |
| Alisto Limited | Real estate | 2019 |
| Aliumblue LLP | | 2021 |
| Alivision Optics Ltd | Wholesale & retail | 2023 |
| Aliyanas Official Ltd | Wholesale & retail | 2024 |
| Alizah Group Limited | Wholesale & retail | 2019 |
| Alizai Ltd | Hospitality | 2020 |
| Alizan Mortgages Ltd | Financial services | 2021 |
| Alka Kumar Ltd | Health & social care | 2016 |
| Alkaline Innovations Ltd | Information & communication | 2018 |
| Alkatrade Ltd | Wholesale & retail | 2019 |
| ALL 4 One Autocare Limited | Wholesale & retail | 2026 |
| ALL About Electrics Ltd | Construction | 2022 |
| ALL Access Entry Systems Limited | Manufacturing | 2024 |
| ALL Alone Road Garage Limited | Wholesale & retail | 2004 |
| ALL Angles Roofing (Yorkshire) Limited | Construction | 2025 |
| ALL Area Car Rental Ltd | Administrative & support | 2019 |
| ALL Around MOT Center Ltd | Wholesale & retail | 2026 |