| AL Elec Ltd | Construction | 2025 |
| AL Faisal Import & Export (Smc-Private) Ltd | Wholesale & retail | 2025 |
| AL Habeeb Travels & Tours Ltd | Administrative & support | 2018 |
| AL Huda Group CIC | Education | 2023 |
| AL Imaan by Jubbas.Com Ltd | Wholesale & retail | 2016 |
| AL Noor Bargain Ltd | Wholesale & retail | 2024 |
| AL Saati Properties Ltd | Real estate | 2024 |
| AL Sawafi Ltd | Real estate | 2025 |
| Al'Zayn Limited | Wholesale & retail | 2013 |
| Al-Hayat Meat Ltd | Wholesale & retail | 2024 |
| Al-Imdaad Foundation UK | Health & social care | 2011 |
| Al-Imdaad UK (Trading) Limited | Real estate | 2013 |
| Al-Jibran&Co Ltd | Health & social care | 2018 |
| Al-Jubail Properties Ltd | Real estate | 2026 |
| Al-Kamil Limited | Other services | 2024 |
| Al-Karim Incense & Fragrance Ltd | Wholesale & retail | 2024 |
| Al-Mansur Travel Ltd | Administrative & support | 2014 |
| Al-Medina Properties Ltd | Administrative & support | 2020 |
| Al-Quran Foundation (UK) Ltd | Education | 2012 |
| Al-Qādirī Ltd | Education | 2025 |
| Al-Raheem Storess Ltd | Wholesale & retail | 2025 |
| Al-Rakab Plumbing Services Ltd | Wholesale & retail | 2022 |
| Al-Sufi Property Assets Limited | Real estate | 2026 |
| Al-Sufi Tours Limited | Administrative & support | 2025 |
| Aladdin's Cave (Takeaway) Ltd | Hospitality | 2024 |
| Alam Food Store Ltd | Wholesale & retail | 2026 |
| Alam Global Traders Limited | Wholesale & retail | 2026 |
| Alamo ICT Limited | Information & communication | 2004 |
| Alams Group Limited | Construction | 2022 |
| Alan Price Automobile Services Limited | Wholesale & retail | 2015 |
| Alaris Holdings Ltd | Real estate | 2021 |
| ALASI781 Ltd | Wholesale & retail | 2021 |
| Alayna & Aldrich Anthony Limited | Health & social care | 2023 |
| Albabridge Limited | Real estate | 1996 |
| Albucasis Healthcare Ltd | Health & social care | 2025 |
| Alchemy Direct Ltd | Wholesale & retail | 2023 |
| Alchemy Pharma Limited | Health & social care | 2012 |
| Alcor Holdings Limited | Financial services | 2020 |
| Aldec Ltd | Construction | 2010 |
| Alder & Grey Ltd | Real estate | 2026 |
| Alderson Developments Limited | Administrative & support | 2012 |
| Aldrock Properties Limited | Financial services | 2017 |
| Aldrock Renewables Limited | Construction | 2023 |
| Aldrock Surveyors Limited | Professional & scientific | 2008 |
| ALE Properties Limited | Construction | 2019 |
| Aleaf Holding Limited | Real estate | 2021 |
| Aleeza Properties Ltd | Real estate | 2022 |
| Aletheo Limited | Information & communication | 2024 |
| Alex Builder Ltd | Construction | 2025 |
| Alexa AI Productions Limited | Wholesale & retail | 2024 |
| Alexander GOW Ltd | Professional & scientific | 2004 |
| Alexander Investments (NW) Ltd | Real estate | 2025 |
| ALF Trading Ltd | Real estate | 2026 |
| Alfalah Group Ltd | Construction | 2018 |
| Alfie Electrician Ltd | Energy | 2019 |
| Alfred Marley Investments Limited | Real estate | 2017 |
| Alfresco Darwen Ltd | Hospitality | 2026 |
| Algarve Coast Villas Ltd | Administrative & support | 2015 |
| Algk & Co Limited | Financial services | 2017 |
| Alhayat Languages Ltd | Education | 2010 |
| ALI Basvi Ltd | Wholesale & retail | 2025 |
| ALI Gutters Ltd | Construction | 2024 |
| ALI RAJ Takeaway Limited | Hospitality | 2018 |
| Alice Retail Ltd | Hospitality | 2025 |
| Alico Supplies Ltd | Wholesale & retail | 2022 |
| Align Ltd | Professional & scientific | 2021 |
| Align Wellness Group Ltd | Health & social care | 2026 |
| Alishauk Limited | Wholesale & retail | 2024 |
| Alistair Almond Ltd | Information & communication | 2026 |
| Aliyan Mart Ltd | Wholesale & retail | 2025 |
| Ali’S Investment Ltd | Real estate | 2020 |
| Alkafit Ltd | Administrative & support | 2025 |
| Alkrington Village Property Ltd | Real estate | 2021 |
| Alkron Group Limited | Financial services | 2023 |
| ALL Amanjy Ltd | Real estate | 2025 |
| ALL Aspects Flooring Ltd | Construction | 2021 |
| ALL Cars Garage Ltd | Wholesale & retail | 2009 |
| ALL Elec. Ltd | Construction | 2016 |
| ALL in One Bargain Ltd | Wholesale & retail | 2024 |
| ALL Over Global Ltd | Wholesale & retail | 2019 |
| ALL Point Mobility Ltd | Other services | 2007 |
| ALL Rack Limited | Wholesale & retail | 2014 |
| ALL Seasons Driveways Ltd | Manufacturing | 2025 |
| ALL Seasonz Ltd | Wholesale & retail | 2025 |
| ALL Trades (GB) Limited | Construction | 2002 |
| ALL Trades (Network) Ltd | Extraterritorial | 2004 |
| Allaboard (Clitheroe) Ltd | Hospitality | 2025 |
| Allandor Ltd | Construction | 2009 |
| Allcare Nurses Agency Limited | Health & social care | 2002 |
| Allcoms Services Limited | Professional & scientific | 2019 |
| Allen Motor Company Limited | Wholesale & retail | 2016 |
| Allgoods Outlet Ltd | Wholesale & retail | 2025 |
| Alliance Fire Systems Limited | Manufacturing | 1990 |
| Allina Optical Ltd | Health & social care | 2023 |
| Alloy Motorsport Ltd | Wholesale & retail | 2022 |
| Allsec Ltd | Construction | 2021 |
| Allspectrum Trading Ltd | Wholesale & retail | 2025 |
| Allspeeds Engineering Solutions Limited | Financial services | 2018 |
| Allspeeds Group Limited | Financial services | 2024 |
| Allspeeds Limited | Manufacturing | 2003 |