| Aircabio Limited | Transport & logistics | 2024 |
| Aireo Media Ltd | Professional & scientific | 2025 |
| Airma Limited | Transport & logistics | 2019 |
| Airport Travel Plus Limited | Other services | 2020 |
| Aitechsystems Ltd | Wholesale & retail | 2026 |
| AIW Electrical and Property Services Limited | Construction | 2026 |
| Aiza's Goods Ltd | Wholesale & retail | 2021 |
| Aizahsbazaar Ltd | Wholesale & retail | 2026 |
| AJ Ales LLP | | 2014 |
| AJ Alloys Ltd | Wholesale & retail | 2021 |
| AJ Boss Ltd | Wholesale & retail | 2023 |
| AJ COUTURE202 Ltd | Wholesale & retail | 2024 |
| AJ Decoratorions Ltd | Wholesale & retail | 2025 |
| AJ Fine Foods Ltd | Hospitality | 2026 |
| AJ Home Essence Ltd | Wholesale & retail | 2025 |
| AJ Properties (Midlands) Ltd | Real estate | 2023 |
| AJ Tasty Bites Ltd | Wholesale & retail | 2024 |
| AJA Carpentry & Joinery Ltd | Construction | 2026 |
| AJA Properties (Midlands) Ltd | Real estate | 2019 |
| AJC Haulage Ltd | Extraterritorial | 2023 |
| AJC Landscape Services Limited | Administrative & support | 2024 |
| Ajecare Support Services Limited | Health & social care | 2026 |
| AJK Garments Ltd | Wholesale & retail | 2018 |
| Ajla Consultancy Ltd | Professional & scientific | 2024 |
| Ajon Properties Limited | Construction | 2016 |
| Ajoti Properties Limited | Real estate | 2021 |
| AJS Commercial Services Ltd | Professional & scientific | 2019 |
| AJV Medical Ltd | Health & social care | 2018 |
| AK Barbershop Ltd | Other services | 2026 |
| AK Courier Services Limited | Transport & logistics | 2024 |
| AK Food and Hospitality Ltd | Hospitality | 2026 |
| AK MJ Food Services Ltd | Hospitality | 2020 |
| AK Mortgages Limited | Financial services | 2015 |
| AK Nursing Ltd | Health & social care | 2024 |
| AK Real Estate Properties Limited | Real estate | 2022 |
| AKA - Implants, Oral Surgery and Sedation Limited | Health & social care | 2024 |
| AKA Property Development Ltd | Real estate | 2019 |
| Akaal Healthcare Ltd | Health & social care | 2025 |
| Akan Services Ltd | Professional & scientific | 2020 |
| AKB Landmark Ltd | Real estate | 2017 |
| Akbar JAN Turab Ltd | Wholesale & retail | 2025 |
| Akdistros Ltd | Wholesale & retail | 2026 |
| Akeju Flips Ltd | Real estate | 2021 |
| Akeju Pappoe Freehold Limited | Real estate | 2025 |
| Akeju Pappoe Limited | Real estate | 2024 |
| Akheilos Racing Limited | Arts & recreation | 2022 |
| AKI Hospitality Ltd | Hospitality | 2026 |
| Akiel Younis Ltd | Construction | 2025 |
| Akka Holdings Limited | Real estate | 2019 |
| Akmsquare Ltd | Wholesale & retail | 2021 |
| Akos Turkish Barber Club BS Limited | Other services | 2025 |
| Akos Turkish Barber Park ST Ltd | Other services | 2023 |
| Akwantuo Global Connect Limited | Administrative & support | 2026 |
| AL Aafiya Mental Health and Wellbeing Services CIC | Hospitality | 2021 |
| AL Baaz Trading Ltd | Wholesale & retail | 2020 |
| AL Coombs Construction Limited | Construction | 2009 |
| AL Hadi Tools Ltd | Wholesale & retail | 2025 |
| AL Hameed Ltd | Wholesale & retail | 2026 |
| AL Haram 324 Supermarket Ltd | Wholesale & retail | 2022 |
| AL Haram Supermarket Ltd | Wholesale & retail | 2019 |
| AL ILM Ltd | Real estate | 2025 |
| AL Muneer Welfare UK Limited | Administrative & support | 2026 |
| AL Sher Limited | Wholesale & retail | 2025 |
| AL Waheed Ltd | Other services | 2025 |
| AL Wasl Investments Limited | Hospitality | 2025 |
| Al-Badar Cash & Carry Supermarket Ltd | Wholesale & retail | 2026 |
| Al-Barakah Exports Ltd | Wholesale & retail | 2021 |
| Al-Farooq International Limited | Information & communication | 2003 |
| Al-Husnaa Ltd | Education | 2024 |
| Al-Mustafa GP Services Ltd | Health & social care | 2022 |
| Al-Nazzar Barakah Group Limited | Wholesale & retail | 2026 |
| Al-Qadir Medical Ltd | Health & social care | 2023 |
| Alam & Gray Limited | Administrative & support | 2022 |
| Alamgeer Foods Limited | Wholesale & retail | 2001 |
| Alamins Kitchen Ltd | Hospitality | 2023 |
| Alan Jones Limited | Professional & scientific | 2010 |
| Alanto Limited | Manufacturing | 2002 |
| ALB Property Investments Ltd | Real estate | 2025 |
| Alban Quality Care Limited | Health & social care | 1998 |
| Albatross Construction Ltd | Construction | 2025 |
| Albert Barns Development Limited | Construction | 2021 |
| Albert Glaze,Limited | Real estate | 1932 |
| Albert Jagger Holdings Limited | Professional & scientific | 2002 |
| Albert Swann Ltd | Hospitality | 2018 |
| Albion BID Co. Limited | Administrative & support | 2006 |
| Albourz Consulting Ltd | Health & social care | 2024 |
| ALC Leisure Ltd | Hospitality | 2016 |
| ALC Property Ltd | Real estate | 2017 |
| Alchemy Construction Solutions Ltd | Construction | 2007 |
| Alchemy Locum & Consultancy Services (West Midlands) Ltd | Health & social care | 2014 |
| Alchemy System Integration Ltd | Information & communication | 2023 |
| Alcme Limited | Manufacturing | 2013 |
| Alcom Trading Ltd | Wholesale & retail | 2024 |
| Alcombe House Limited | Health & social care | 1993 |
| Alcombe Properties Ltd | Hospitality | 1997 |
| Alcombe Supported Housing Ltd | Hospitality | 2009 |
| Alcoraluk Ltd | Transport & logistics | 2024 |
| Alder & Oak Limited | Wholesale & retail | 2025 |
| Alder Grange Management Ltd | Households | 2022 |
| Alderwood Property Investments Ltd | Real estate | 2025 |