| ABC Cafe West London Limited | Hospitality | 2018 |
| ABC Digital Entertainment Limited | Administrative & support | 2024 |
| ABC Digital Limited | Financial services | 2022 |
| ABC Digital Marketing Limited | Professional & scientific | 2024 |
| ABC Mobil Ltd | Wholesale & retail | 2019 |
| ABC Music London Limited | Information & communication | 1966 |
| ABC Tech Link Ltd | Information & communication | 2026 |
| Abclink Ltd | Information & communication | 2019 |
| ABD Ecom Ventures Ltd | Wholesale & retail | 2026 |
| Abdullahbodyshopuk Ltd | Wholesale & retail | 2025 |
| Aberdeen Coffee Ltd. | Hospitality | 2017 |
| Abex Logistics Limited | Transport & logistics | 2021 |
| ABF E-Zone Limited | Wholesale & retail | 2023 |
| Abha Limited | Wholesale & retail | 2007 |
| Abhi's Barber Limited | Other services | 2025 |
| Abhiraj Homes Ltd | Real estate | 2024 |
| Abhishek Madhu Ltd | Construction | 2026 |
| Abir Enterprise Limited | Real estate | 2025 |
| Able Connect Limited | Transport & logistics | 2004 |
| Abless Limited | Wholesale & retail | 2025 |
| Abmart.Uk Ltd | Wholesale & retail | 2025 |
| About Your Fit Ltd | Wholesale & retail | 2025 |
| Abrar Sports Ltd | Wholesale & retail | 2026 |
| Absolute Books Limited | Professional & scientific | 2009 |
| ABU Qumash Group Ltd | Wholesale & retail | 2025 |
| Abucur Trans Ltd | Transport & logistics | 2023 |
| Abuzar Autos Limited | Wholesale & retail | 2023 |
| ABX Mobile Ltd | Wholesale & retail | 2023 |
| AC Protect Building Services Limited | Administrative & support | 2026 |
| Academy Fabrics Limited | Manufacturing | 1996 |
| Academy Productions Limited | Information & communication | 2021 |
| Accessory Master Limited | Wholesale & retail | 2010 |
| Accident Assist London Ltd | Administrative & support | 2019 |
| Accident Watch Limited | Wholesale & retail | 2003 |
| Accmede Pharmaceuticals Limited | Wholesale & retail | 2014 |
| Accord Fragrance Bar Limited | Wholesale & retail | 2025 |
| Accordant Recruiting Limited | Information & communication | 2022 |
| Accountant on Duty Limited | Professional & scientific | 2018 |
| Accounts Expert Ltd | Professional & scientific | 2024 |
| Accounts Management Ltd | Professional & scientific | 2016 |
| Accountstech Solutions Ltd | Professional & scientific | 2022 |
| Ace Plumbing Services Ltd | Construction | 2024 |
| Ace Security and Services Limited | Administrative & support | 2010 |
| ACL Motors Ltd | Wholesale & retail | 2025 |
| Acme Engineering Ltd | Manufacturing | 2021 |
| Acquire Prime Ltd | Wholesale & retail | 2022 |
| ACR Management Company Limited | Real estate | 2016 |
| Acre Real Estate Limited | Real estate | 2021 |
| ACS Reverse Logistics Ltd | Transport & logistics | 2006 |
| AD25 Ltd | Wholesale & retail | 2025 |
| Adam Assets Investment Ltd | Real estate | 2022 |
| Adam Halal Meat Limited | Wholesale & retail | 2021 |
| Adam Plumbing Limited | Construction | 2018 |
| Adam SY Limited | Wholesale & retail | 2025 |
| Adamson Tours Ltd | Administrative & support | 2024 |
| Adar Homes Limited | Real estate | 2024 |
| Addey & Garrett Ltd | Real estate | 2022 |
| Addicted Vape Limited | Wholesale & retail | 2018 |
| Adens Venture Limited | Real estate | 2026 |
| ADI Window Tinting Ltd | Wholesale & retail | 2023 |
| Adilfarz Limited | Information & communication | 2025 |
| Adivox Limited | Professional & scientific | 2025 |
| ADK Project Management Ltd | Construction | 2017 |
| ADM Cash & Carry Ltd | Wholesale & retail | 2024 |
| Admin Bookings Ltd | Public administration | 2024 |
| Admire Security Ltd | Other services | 2018 |
| ADN Worldwide Ltd | Wholesale & retail | 2026 |
| Adnan Jahangir Limited | Professional & scientific | 2019 |
| Adrass Fast Courier Service Ltd | Transport & logistics | 2025 |
| Adreamz Events Limited | Hospitality | 2023 |
| Adreamz International Limited | Education | 2025 |
| Adri Foods Ltd | Wholesale & retail | 2019 |
| ADS Retail Limited | Wholesale & retail | 2026 |
| Adult Training Network Limited | Administrative & support | 2001 |
| Advance Glazing Ltd | Construction | 2011 |
| Advanced Law Tutors Ltd | Education | 2012 |
| Advanced Medical Aesthetics Academy Ltd | Other services | 2025 |
| Advansolutions Limited | Transport & logistics | 2024 |
| Adverique Ltd | Professional & scientific | 2026 |
| Adverza Ltd | Wholesale & retail | 2026 |
| Aeropick Airport Transfer Limited | Construction | 2022 |
| AES GAS & Electric Ltd | Construction | 2021 |
| Aesthetics Bar Ltd | Other services | 2020 |
| Aesthetics Wholesale Ltd | Other services | 2022 |
| AF Property and Investments Ltd | Real estate | 2025 |
| AF Traders Limited | Wholesale & retail | 2016 |
| Afaq UR Rehman Ltd | Wholesale & retail | 2025 |
| Affinity Cars 2026 Ltd | Wholesale & retail | 2026 |
| Affluence Wedding Services Ltd | Hospitality | 2019 |
| Affordable Foods Limited | Wholesale & retail | 2016 |
| Africa Brooke International Ltd | Information & communication | 2019 |
| African Businesslink Ltd | Information & communication | 2008 |
| Afrooz Ltd | Real estate | 2022 |
| Afrowholesaledirect Ltd | Wholesale & retail | 2022 |
| AFS Motors Ltd | Wholesale & retail | 2014 |
| AG Jewel Hub Limited | Wholesale & retail | 2023 |
| AG Remote Ltd | Information & communication | 2024 |
| AGA Capital Ltd | Wholesale & retail | 2020 |
| Agam Gosai Manav Seva Foundation Ltd | Health & social care | 2007 |
| AGD Scaffolding Ltd | Construction | 2020 |