| Allied London Developments Two Limited | Construction | 2022 |
| Allied London Fire Station Developments Limited | Real estate | 2016 |
| Allied London Fire Station Holdco Limited | Real estate | 2016 |
| Allied London Fire Station Holdco One Limited | Real estate | 2016 |
| Allied London Fire Station Holdco Two Limited | Real estate | 2016 |
| Allied London Fire Station Limited | Real estate | 2014 |
| Allied London Fire Station Management Company Limited | Real estate | 2018 |
| Allied London Fire Station Opco Limited | Real estate | 2018 |
| Allied London Firestation Holding Company Limited | Real estate | 2016 |
| Allied London Group Management Limited | Real estate | 2026 |
| Allied London Holdco Limited | Real estate | 2012 |
| Allied London Holdco Two Limited | Real estate | 2012 |
| Allied London Investments Limited | Real estate | 1951 |
| Allied London Leeds Holdco 1 Limited | Real estate | 2019 |
| Allied London Leeds Holdco 2 Limited | Real estate | 2019 |
| Allied London Leeds Holding Company One Limited | Real estate | 2015 |
| Allied London Leeds Holding Company Two Limited | Real estate | 2015 |
| Allied London LLP | | 2010 |
| Allied London Lower Campfield Limited | Real estate | 2022 |
| Allied London Piccadilly Warehouse Limited | Real estate | 2012 |
| Allied London Properties Limited | Real estate | 2012 |
| Allied London Property Investments Limited | Construction | 1970 |
| Allied London Quay House Developments Limited | Construction | 2017 |
| Allied London Quay Street Holdco Limited | Real estate | 2017 |
| Allied London Quay Street Limited | Real estate | 2017 |
| Allied London Quay Street One Limited | Real estate | 2017 |
| Allied London Quay Street Two Limited | Real estate | 2017 |
| Allied London Upper Campfield Limited | Real estate | 2022 |
| Allied Managed Services Limited | Extraterritorial | 2014 |
| Allied Management Solutions Ltd | Administrative & support | 2016 |
| Allied Phoenix Limited | Administrative & support | 2015 |
| Allied Property MCR Ltd | Real estate | 2023 |
| Allied Solicitors Limited | Professional & scientific | 2017 |
| Allied Trades Ltd | Extraterritorial | 2025 |
| Allied Travel & Tours Ltd | Administrative & support | 2026 |
| Allied TS Ltd | Transport & logistics | 2012 |
| Allin One Vinted Limited | Wholesale & retail | 2025 |
| Allington Management Advisory Ltd. | Professional & scientific | 2005 |
| Allinonebazaar Ltd | Wholesale & retail | 2025 |
| Allison Allcott Ltd | Administrative & support | 2017 |
| Allison CPC Ltd | Education | 2026 |
| Allison’S Bakery Ltd | Manufacturing | 2023 |
| Allister Group Limited | Administrative & support | 2017 |
| Allistoncare Ltd | Professional & scientific | 2023 |
| Allman Brown Limited | Arts & recreation | 2017 |
| Allman Builders Limited | Construction | 2007 |
| Allmart by Chirag Limited | Wholesale & retail | 2025 |
| Allmee Limited | Public administration | 2021 |
| Allnet Solutions Limited | Wholesale & retail | 2014 |
| Allofus PVT Ltd | Health & social care | 2018 |
| Allot Solutions Limited | Professional & scientific | 2015 |
| Allotey Holdings Limited | Real estate | 2020 |
| Allotment Vegan Manchester Limited | Wholesale & retail | 2019 |
| Allow Greatness Ltd. | Administrative & support | 2026 |
| Alloway Care Solutions Limited | Health & social care | 2022 |
| Allowed Music Opco Ltd | Arts & recreation | 2026 |
| Alloy Bodies Limited | Manufacturing | 2005 |
| Alloy Core Trading Partners Ltd | Extraterritorial | 2026 |
| Alls Trading Ltd | Wholesale & retail | 2025 |
| Allscott Ltd | Wholesale & retail | 2026 |
| Allsetsport Limited | Arts & recreation | 2025 |
| Allsite Services Ltd | Administrative & support | 2022 |
| Allsof Global Limited | Professional & scientific | 2023 |
| Allsof Limited | Information & communication | 2023 |
| Allsorted Management & Production Limited | Administrative & support | 2012 |
| Allsorts 4 U Limited | Wholesale & retail | 2013 |
| Allsparks Electrical (NW) Ltd | Construction | 2019 |
| Allstar Agents (UK) Ltd | Administrative & support | 2012 |
| Allstars Staff Limited | Administrative & support | 2011 |
| Alltami Truck and Plant Sales Ltd | Wholesale & retail | 2015 |
| Alltech Industrial Ltd | Energy | 2004 |
| Alltextiles Agencies Limited | Wholesale & retail | 2009 |
| Alltite Roller Shutters Limited | Administrative & support | 2007 |
| Alltix One Group Limited | Information & communication | 2025 |
| Allucion Ltd | Wholesale & retail | 2023 |
| Allura Aesthetics Limited | Health & social care | 2026 |
| Allura Mart Ltd | Wholesale & retail | 2026 |
| Allure Beauty Group Limited | Education | 2017 |
| Allure Fashion & Bedding Limited | Wholesale & retail | 2021 |
| Allure MCR Hair Ltd | Other services | 2022 |
| Allure MCR Lashes Ltd | Other services | 2022 |
| Allure Sports Ltd | Wholesale & retail | 2025 |
| Allurehub Limited | Wholesale & retail | 2022 |
| Alluremcr Ltd | Other services | 2019 |
| Alluringproducts Ltd | Wholesale & retail | 2024 |
| Allways Shipping Limited | Transport & logistics | 1991 |
| Allwood Recycling Solutions Limited | Water & waste | 2010 |
| Allwood Stone Fireplaces Ltd | Wholesale & retail | 2026 |
| Ally Global Forwarding Limited | Transport & logistics | 2020 |
| Allyboost Ltd | Health & social care | 2025 |
| ALM Architect Ltd | Professional & scientific | 2024 |
| ALM Capital Limited | Real estate | 2023 |
| ALM Commerce Group Ltd | Wholesale & retail | 2025 |
| ALM Foods Limited | Hospitality | 2014 |
| ALM Global LLC Ltd | Hospitality | 2022 |
| ALM Homes Limited | Construction | 2014 |
| ALM MCR Ltd | Wholesale & retail | 2025 |
| ALM Meat & Poultry Traders Limited | Manufacturing | 2024 |
| ALM Simpson Ltd | Real estate | 2026 |
| Alma Content Ltd | Information & communication | 2024 |