| AL Plumbing and Bathrooms Ltd | Construction | 2020 |
| Al-Hram Pharma Ltd | Wholesale & retail | 2012 |
| Al-Karim Logistics Limited | Wholesale & retail | 2025 |
| Al-Liabi Health Limited | Wholesale & retail | 2020 |
| Al-Liabi Limited | Real estate | 2019 |
| Al.Zulfa Ltd | Wholesale & retail | 2023 |
| Alalwy Trading Limited | Wholesale & retail | 2023 |
| Alam Exclusive Limited | Wholesale & retail | 2019 |
| Alam Investments & Sons Ltd | Wholesale & retail | 2019 |
| Alamdaar Properties Limited | Real estate | 2024 |
| Alan Barnes Music Limited | Arts & recreation | 2013 |
| Alan Bell and Associates Limited | Professional & scientific | 2002 |
| Alan C Davis & Associates Limited | Construction | 2004 |
| Alan Lawrence Ltd | Professional & scientific | 2021 |
| Alan Mottram Engineering Services Limited | Professional & scientific | 2006 |
| Alan Rashleigh and Associates Limited | Financial services | 2003 |
| Alan's Super Store Ltd | Wholesale & retail | 2021 |
| Alani Limited | Wholesale & retail | 2023 |
| Alani Wellness Limited | Health & social care | 2025 |
| Alare Productions Limited | Arts & recreation | 2023 |
| Alasasyah Development UK Ltd | Real estate | 2017 |
| Alayna Land Limited | Real estate | 2000 |
| Alayna Trading Limited | Hospitality | 2002 |
| Alaïa House of Beauty Ltd | Other services | 2018 |
| Albany Court (Urmston) Management Limited | Real estate | 1998 |
| Albany Veterinary Clinic Limited | Professional & scientific | 2011 |
| Albert Gardens Limited | Households | 2024 |
| Albert Place Management Limited | Households | 2024 |
| Albion House Management Co Limited | Real estate | 2023 |
| Albion Works (Freehold) Limited | Real estate | 2025 |
| Alborz Persian Cuisine Limited | Hospitality | 2017 |
| Albrite Commercial Cleaners Limited | Administrative & support | 2006 |
| ALC Associates Ltd | Professional & scientific | 2022 |
| Alcae Solutions Limited | Financial services | 2018 |
| Alcamay Management Services Limited | Households | 2003 |
| Alchemise Media Ltd | Information & communication | 2024 |
| Alco Solutions Ltd | Administrative & support | 2011 |
| Alcohol Monitoring Systems Limited | Other services | 2012 |
| Aldassist Ltd | Information & communication | 2025 |
| Alderley Architecture Limited | Professional & scientific | 2017 |
| Alderley Edge Construction Limited | Real estate | 2009 |
| Alderley Way 91119 Ltd | Households | 2019 |
| Alderley&Co Properties Ltd | Extraterritorial | 2024 |
| Aldersgate Management Company Limited | Real estate | 2025 |
| Aldstone Property Ltd | Real estate | 2021 |
| Alea G.P. Ltd | Information & communication | 2024 |
| Alejandro's Wines Limited | Manufacturing | 2018 |
| Aleks Food Limited | Other services | 2018 |
| Alemu Housekeeping Company Ltd | Administrative & support | 2024 |
| Alessandro Ferrero Limited | Health & social care | 2006 |
| Alex Barber Catering Ltd | Hospitality | 2026 |
| Alex Construction (Cheshire) Limited | Construction | 2017 |
| Alex Hunt Estates (Sales) Ltd. | Real estate | 2012 |
| Alex Stroud Property Consultants Limited | Administrative & support | 2010 |
| Alex Walker Personal Training Ltd | Arts & recreation | 2023 |
| Alex Worth Hairstylist Ltd | Other services | 2023 |
| Alexander (Stockport) LLP | | 2016 |
| Alexander Innovations Limited | Construction | 2018 |
| Alexander James Kitchens Limited | Construction | 2024 |
| Alexander Quality Associates Ltd | Administrative & support | 2017 |
| Alexander Vincent Ltd | Real estate | 2018 |
| Alexander Windows Holdings Limited | Financial services | 2017 |
| Alexander Wood Autos Limited | Wholesale & retail | 2010 |
| Alexandra Mews RTM Company Limited | Households | 2009 |
| Alexandra Road Properties Limited | Real estate | 2020 |
| Alexandra Securities Ltd | Professional & scientific | 2015 |
| Alexoria Limited | Professional & scientific | 2007 |
| Alfas Corporation Limited | Wholesale & retail | 2024 |
| Alfie's Electrical Services Limited | Construction | 2009 |
| Alfred Gans Ltd | Real estate | 2013 |
| Alfvenic Ltd | Information & communication | 2024 |
| Algate Walker Limited | Professional & scientific | 2021 |
| ALH Property Investments Ltd | Real estate | 2026 |
| ALI and Grandsons Limited | Wholesale & retail | 2026 |
| ALI Rehman & Co UK Limited | Professional & scientific | 2016 |
| ALI Rehman Properties Ltd | Construction | 2025 |
| Alice Event Limited | Hospitality | 2020 |
| Alice Garance Ltd | Wholesale & retail | 2019 |
| Alick Barlow Ltd | Professional & scientific | 2019 |
| Align Manchester Ltd | Arts & recreation | 2023 |
| Aliman Group Transport Ltd | Transport & logistics | 2025 |
| Aline Cars Ltd | Wholesale & retail | 2019 |
| Alisa Development Ltd | Real estate | 2025 |
| Alish Realty Ltd | Real estate | 2022 |
| ALL About Shopping Ltd | Wholesale & retail | 2018 |
| ALL About Time Limited | Real estate | 2019 |
| ALL Aspects Build Limited | Construction | 2018 |
| ALL Caps Media Ltd | Professional & scientific | 2024 |
| ALL Connections Ltd | Administrative & support | 2025 |
| ALL Crafted Creations Ltd | Manufacturing | 2025 |
| ALL Day Medical Group LLP | | 2010 |
| ALL Door Engineering (UK) Limited | Administrative & support | 2009 |
| ALL Door Engineering Ltd | Construction | 2004 |
| ALL Ears Media Ltd | Information & communication | 2021 |
| ALL Eyes on YOU Ltd | Other services | 2019 |
| ALL for Cycling Limited | Other services | 2001 |
| ALL Fruits Ripe Ltd | Professional & scientific | 2019 |
| ALL Glass and Glazing Installations Ltd | Construction | 2024 |
| ALL Green Cabs Limited | Transport & logistics | 2021 |
| ALL Home Repairs 24/7 Ltd | Other services | 2024 |