| AKM Transport Limited | Transport & logistics | 2016 |
| Akmeja Ltd | Transport & logistics | 2025 |
| AKN Partners London Ltd | Real estate | 2025 |
| AKN Partners Ltd | Hospitality | 2024 |
| Aknm Holdings Ltd | Real estate | 2025 |
| AKO Event Services Ltd | Administrative & support | 2022 |
| AKO Property Group Limited | Real estate | 2018 |
| AKO Wedding Photography Ltd | Professional & scientific | 2025 |
| AKR Property Developments Ltd | Real estate | 2024 |
| Akram Recruitment Ltd | Administrative & support | 2023 |
| Akrv Tranport Ltd | Transport & logistics | 2024 |
| AKS Consultancy Services Limited | Administrative & support | 2022 |
| AKS Legacy Limited | Wholesale & retail | 2026 |
| AKS Wealth Management Limited | Administrative & support | 2016 |
| Akte Cleaning (Cambridge) Limited | Administrative & support | 2025 |
| Akus Trans Ltd | Transport & logistics | 2021 |
| AKV Investments Limited | Information & communication | 2009 |
| AL Aara' a Building Contg.Uk Ltd | Construction | 2021 |
| AL Furqan Tuition Ltd | Education | 2020 |
| AL Ghani Properties Ltd | Real estate | 2026 |
| AL Majd Ltd | Hospitality | 2020 |
| AL Mayeda Foods Ltd | Hospitality | 2023 |
| AL Mayeda Properties Limited | Real estate | 2026 |
| AL Mehdi Investment Ltd | Real estate | 2018 |
| AL Mehdi Investment PVT Ltd | Real estate | 2024 |
| AL Mehraj Currency Exchange Limited | Administrative & support | 2008 |
| AL Noor Traders Ltd | Wholesale & retail | 2019 |
| AL Rafay Group Limited | Wholesale & retail | 2026 |
| AL Rahi Developments Limited | Real estate | 2025 |
| AL Rayyan UK Ltd | Households | 2023 |
| AL Rehman Halal Meat and Grocery Store Ltd | Wholesale & retail | 2024 |
| AL Sharaf Education | Professional & scientific | 2025 |
| AL Zahra Investment Ltd | Construction | 2020 |
| AL Zahra Medical Ltd | Health & social care | 2020 |
| Al-Bord Al-Kafi International Company for Medical Training and Consulting Ltd | Education | 2026 |
| Al-Burhan Welfare Trust | Professional & scientific | 2012 |
| Al-Fattah Trading Limited | Wholesale & retail | 2025 |
| Al-Hakim Limited | Professional & scientific | 2021 |
| Al-Huda Travels Limited | Administrative & support | 2021 |
| Al-Kareem Property Limited | Construction | 2019 |
| Al-Qaadir Builders Ltd | Construction | 2025 |
| Al-Qibla Food Store Ltd | Hospitality | 2025 |
| Al-Shifa Health Ltd | Wholesale & retail | 2023 |
| Alabama Property Holdings Ltd | Real estate | 2025 |
| Alali Healthcare Ltd | Health & social care | 2024 |
| Alamdar Ltd | Real estate | 2024 |
| Alameda Peptides Ltd | Wholesale & retail | 2026 |
| Alan Bush Installations Ltd | Transport & logistics | 1997 |
| Alan Graham Consultants Limited | Professional & scientific | 2014 |
| Alan Investments Limited | Real estate | 2021 |
| Alan R Convenience Store Limited | Wholesale & retail | 2022 |
| Alan Symonds & Company Limited | Wholesale & retail | 1979 |
| Alan Trans Ltd | Transport & logistics | 2018 |
| Alanta Power Engineering (UK) Co., Ltd | Manufacturing | 2017 |
| Alas Construct Ltd | Construction | 2019 |
| Alaskan (UK) Limited | Construction | 2003 |
| Alayna Ltd | Hospitality | 2025 |
| Albany Garden Services Ltd | Administrative & support | 2022 |
| Albany Walk Management (Plots 39-53) Limited | Households | 1991 |
| Albatrosos Ltd | Transport & logistics | 2021 |
| Albert Auto Services Ltd | Wholesale & retail | 2018 |
| Albert Vincent Group Limited | Health & social care | 2008 |
| Alberton Motorcycles Limited | Wholesale & retail | 2023 |
| Albertyn Construction Ltd | Construction | 2022 |
| Albi Auto Care Ltd | Wholesale & retail | 2024 |
| Albi Properties Ltd | Real estate | 2020 |
| Albin Trans Ltd | Transport & logistics | 2020 |
| Albis Trans Ltd | Transport & logistics | 2017 |
| Albus Limited | Professional & scientific | 2007 |
| Alby's Plastering Limited | Construction | 2021 |
| ALC Consultancy Limited | Professional & scientific | 2024 |
| Alchemy International Ltd | Professional & scientific | 2019 |
| Alchemy. PD Ltd | Construction | 2020 |
| Alco Logistics Ltd | Transport & logistics | 2025 |
| Alec Wills Limited | | 1943 |
| Aleem Properties Ltd | Real estate | 2016 |
| Aleitrans Ltd | Transport & logistics | 2021 |
| ALEKSANDAR11 Ltd | Construction | 2013 |
| Alekxx Limited | Transport & logistics | 2024 |
| Alendo Group Ltd | Agriculture & fishing | 2023 |
| Alert Cascade Limited | Information & communication | 2015 |
| Alessandro Vardaro Bespoke Estate Agents Ltd | Real estate | 2023 |
| Alethia Media Ltd | Administrative & support | 2011 |
| Alex Alex Limited | Construction | 2015 |
| Alex Andy Ltd | Transport & logistics | 2018 |
| Alex David Ltd | Construction | 2018 |
| Alex Driving Ltd | Transport & logistics | 2012 |
| Alex PE Trans Ltd | Transport & logistics | 2024 |
| Alex Property Ltd | Real estate | 2024 |
| Alex V Transfer Ltd | Transport & logistics | 2026 |
| Alex W15DOM Ltd | Transport & logistics | 2020 |
| Alex&Co Builders Limited | Construction | 2023 |
| Alexacvtrans Ltd | Transport & logistics | 2025 |
| Alexander Charles Real Estate Consultants Limited | Real estate | 2013 |
| Alexander Peter Property Services Limited | Professional & scientific | 2023 |
| Alexander Rodway Building Contractors Limited | Construction | 2017 |
| Alexanderjoe Ltd | Health & social care | 2015 |
| Alexandra Fern Ltd | Real estate | 2018 |
| Alexandra Mini Market Limited | Wholesale & retail | 2020 |
| Alexandra Road Peterborough Management Limited | Real estate | 2005 |