| A W Styling Ltd | Professional & scientific | 2025 |
| A Waites 408157 Sipp Limited | Administrative & support | 2021 |
| A Walkes Property's Ltd | Real estate | 2023 |
| A Walsh Projects Ltd | Construction | 2022 |
| A Walters Limited | Construction | 2003 |
| A Warritay Childcare Ltd | Health & social care | 2026 |
| A Waters & Sons Ltd | Transport & logistics | 2023 |
| A Way Forward Consulting Ltd | Professional & scientific | 2016 |
| A Way With Tax Limited | Professional & scientific | 2002 |
| A Wealth of Health Ltd | Other services | 2021 |
| A Wealthier Way Limited | Education | 2025 |
| A Weathered Penny Limited | Manufacturing | 2015 |
| A West Urology Ltd | Health & social care | 2023 |
| A Whitaker Trading Limited | Other services | 2014 |
| A Whitney Consulting Ltd | Information & communication | 2015 |
| A Whole Different World Ltd | Arts & recreation | 2020 |
| A Wholesale UK Ltd | Wholesale & retail | 2022 |
| A Widow's Way Forward CIC | Education | 2022 |
| A Williams Property Investments Limited | Real estate | 2017 |
| A Williams&Son Ltd | Professional & scientific | 2026 |
| A Wilson Plastering Ltd | Construction | 2018 |
| A WIN Brothers' Property Limited | Real estate | 2020 |
| A Windmill Electrics Limited | Construction | 2016 |
| A Wise Consultancy Ltd | Administrative & support | 2023 |
| A Wissen Ltd | Professional & scientific | 2025 |
| A Woman Walks Limited | Information & communication | 2023 |
| A Wong Catering Ltd | Wholesale & retail | 2023 |
| A Wong Limited | Hospitality | 2018 |
| A Woodhouse & SON Limited | Wholesale & retail | 2018 |
| A Woods Trading Limited | Wholesale & retail | 2021 |
| A Woodward Aviation Ltd. | Transport & logistics | 2017 |
| A Word in Your EAR Productions Ltd | Information & communication | 2011 |
| A Workspace Management Limited | Real estate | 2024 |
| A World Alive Ltd | Health & social care | 2020 |
| A World to Sense Ltd. | Real estate | 2025 |
| A World Without Walls Ltd | Professional & scientific | 2026 |
| A Worm Company Ltd | Professional & scientific | 2023 |
| A Wright Decs Ltd | Construction | 2019 |
| A X Partners Ltd | Construction | 2019 |
| A Y K Estates Limited | Real estate | 2026 |
| A Yadav Ltd | Wholesale & retail | 2025 |
| A Year in London Ltd | Information & communication | 2022 |
| A Yellow Boat Limited | Health & social care | 2023 |
| A Z a World Wide Ltd | Wholesale & retail | 2020 |
| A Z Accountancy Services (UK) Limited | Professional & scientific | 2005 |
| A Z Accounting London Ltd | Administrative & support | 2020 |
| A Z Barber Limited | Other services | 2018 |
| A Z Nail Ltd | Other services | 2017 |
| A Z Optics Ltd | Health & social care | 2011 |
| A Z Real Estate Limited | Real estate | 2012 |
| A Zafar Trading Ltd | Wholesale & retail | 2025 |
| A Zakaria Limited | Transport & logistics | 2020 |
| A Zebari Ltd | Professional & scientific | 2024 |
| A Zeldin Theatre Company Ltd | Arts & recreation | 2019 |
| A Zooom Partnership | | 1997 |
| A& T Duncan Holdings Limited | Real estate | 2020 |
| A&1 Holdings Limited | Financial services | 2021 |
| A&A Driving UK Ltd | Education | 2025 |
| A&A 24/7 Service Ltd | Transport & logistics | 2024 |
| A&A Accountancy Studio Ltd | Professional & scientific | 2018 |
| A&A Adagha Ltd | Manufacturing | 2024 |
| A&A Allegra Limited | Information & communication | 2021 |
| A&A Art and Investments Ltd | Arts & recreation | 2026 |
| A&A Assets Management Ltd | Real estate | 2023 |
| A&A Associates (London) Limited | Hospitality | 2019 |
| A&A Bakery Ltd | Hospitality | 2025 |
| A&A Best at First Ltd | Construction | 2018 |
| A&A Best Food Ltd | Hospitality | 2011 |
| A&A Brands Limited | Wholesale & retail | 2025 |
| A&A Brothers Vehicle Ltd | Wholesale & retail | 2022 |
| A&A Build and Design Ltd | Construction | 2023 |
| A&A Builders Cleaning Services Limited | Administrative & support | 2026 |
| A&A Building Electrical and Lift Services Ltd | Construction | 2025 |
| A&A Builds Ltd | Manufacturing | 2023 |
| A&A Business Group Ltd | Hospitality | 2024 |
| A&A Butcher Ltd | Manufacturing | 2019 |
| A&A Capital Holdings Ltd | Financial services | 2023 |
| A&A Car Service Ltd | Wholesale & retail | 2025 |
| A&A Care & Cleaning Services Ltd | Administrative & support | 2026 |
| A&A Cladding Ltd | Construction | 2026 |
| A&A Clinics Ltd | Health & social care | 2025 |
| A&A Clothing Ltd | Wholesale & retail | 2025 |
| A&A Coffee & Desserts Ltd | Hospitality | 2026 |
| A&A Collection Hubs Ltd | Wholesale & retail | 2025 |
| A&A Collective Ltd. | Professional & scientific | 2014 |
| A&A Commercium Ltd | Wholesale & retail | 2012 |
| A&A Communication Ltd | Wholesale & retail | 2015 |
| A&A Companies Limited | Real estate | 2025 |
| A&A Connects Ltd | Professional & scientific | 2025 |
| A&A Contract Services Ltd | Professional & scientific | 2021 |
| A&A Dawadees Ltd | Real estate | 2021 |
| A&A Digital Ltd | Administrative & support | 2025 |
| A&A Divine Living Ltd | Hospitality | 2026 |
| A&A E Commerce Ltd | Wholesale & retail | 2025 |
| A&A East Services Ltd | Construction | 2018 |
| A&A Ecom Ltd | Wholesale & retail | 2025 |
| A&A Electrical Distributors Limited | Wholesale & retail | 2017 |
| A&A Empire Holdings Ltd | Real estate | 2022 |
| A&A Enterprise and IT Consulting Ltd | Information & communication | 2023 |
| A&A Enterprises London Ltd | Wholesale & retail | 2020 |