| Ayric Limited | Wholesale & retail | 2025 |
| Ayrs Investments Ltd | Financial services | 2019 |
| Ayrshire Elements Windows and Doors Limited | Real estate | 2021 |
| Ayub Accountancy Ltd | Professional & scientific | 2018 |
| Ayub Consulting Services Ltd | Professional & scientific | 2021 |
| Ayub Investments (Holdings) Ltd | Financial services | 2021 |
| Ayzel Emaan Ltd | Wholesale & retail | 2025 |
| AZ Code Ltd | Information & communication | 2024 |
| AZ Distributors Ltd | Wholesale & retail | 2024 |
| AZ Freight Services Ltd | Transport & logistics | 2016 |
| AZ Gujjar Ltd | Wholesale & retail | 2024 |
| AZ Inclusive Limited | Wholesale & retail | 2017 |
| AZ Portfolio (NW) Ltd | Real estate | 2024 |
| AZ Property Services Ltd | Real estate | 2005 |
| AZ Property Ventures Ltd | Real estate | 2026 |
| AZ Sellertree Ltd | Wholesale & retail | 2023 |
| AZ Tech Solutions (NW) Ltd | Information & communication | 2025 |
| AZA Couriers Ltd | Transport & logistics | 2021 |
| AZA Healthcare Limited | Health & social care | 2019 |
| AZA Minibuses Ltd | Education | 2025 |
| Azaan Lettings Ltd | Wholesale & retail | 2020 |
| Azeem House Ltd | Real estate | 2025 |
| Azendiv Limited | Households | 2017 |
| Azera Homes Ltd | Construction | 2018 |
| AZH Consultancy Ltd | Professional & scientific | 2011 |
| AZH Investments Limited | Professional & scientific | 2010 |
| Azhar Academy (Newlands) Ltd | Real estate | 2025 |
| Azhar Atcha Limited | Health & social care | 2015 |
| Azhar Sweets and Bakers Ltd | Hospitality | 2023 |
| Azido Group Ltd | Information & communication | 2023 |
| Azifa Optical Ltd | Health & social care | 2023 |
| Azimy Property Services Limited | Real estate | 2006 |
| Aziz Travels Ltd | Administrative & support | 2024 |
| Aziza KP Limited | Health & social care | 2015 |
| AZK Trading Ltd | Wholesale & retail | 2025 |
| Azka Advisors Ltd | Professional & scientific | 2025 |
| Azlan Hashmi Limited | Wholesale & retail | 2025 |
| Azon Paradise Ltd | Wholesale & retail | 2023 |
| AZP Holdings Limited | Financial services | 2026 |
| Azpo Investments Ltd | Real estate | 2018 |
| Aztechsolutions Limited | Information & communication | 2018 |
| Aztek Consultancy Limited | Information & communication | 2023 |
| Aztek Management Ltd | Financial services | 2023 |
| Aztex Designs Limited | Manufacturing | 2003 |
| Aztrax Limited | Information & communication | 2013 |
| Aztrax Solutions Limited | Information & communication | 2022 |
| AZU Pharma Limited | Health & social care | 2025 |
| Azure Electrical Services Ltd | Construction | 2024 |
| Azure Insights Ltd | Professional & scientific | 2014 |
| AZY Foods Ltd | Hospitality | 2025 |
| Azygos Medical Ltd | Information & communication | 2024 |
| B & B Foods Limited | Wholesale & retail | 2003 |
| B & C Design & Build Ltd | Construction | 2017 |
| B & D Trade Ltd | Wholesale & retail | 2019 |
| B & F Traders UK Ltd | Wholesale & retail | 2017 |
| B & H News Limited | Wholesale & retail | 2010 |
| B & I International Limited | Wholesale & retail | 1997 |
| B a Asset Holdings Ltd | Financial services | 2019 |
| B a N Super Car Wash Limited | Administrative & support | 2023 |
| B Ahmed Management Ltd | Real estate | 2025 |
| B Bros Tilling & Plumbing Limited | Construction | 2025 |
| B C Mason & Sons Ltd | Construction | 2024 |
| B Daniels Limited | Construction | 2002 |
| B Dixon Ltd | Transport & logistics | 2024 |
| B Frank Properties Limited | Financial services | 2019 |
| B H W Floor Screeders Ltd | Construction | 2019 |
| B J Gosai Holding Ltd | Real estate | 2024 |
| B Johnson Consulting Limited | Administrative & support | 2017 |
| B Jones Plastering & Damp Ltd | Construction | 2023 |
| B Q GJ Limited | Administrative & support | 2017 |
| B R Excavations and Groundwork Ltd | Construction | 2018 |
| B R Williamson Transport Limited | Transport & logistics | 2026 |
| B Top Barbers Ltd | Other services | 2019 |
| B Town Automotive Ltd | Wholesale & retail | 2023 |
| B V Properties (Bolton) Ltd | Construction | 2020 |
| B Whittaker Ltd | Health & social care | 2016 |
| B&B Mini Store Ltd | Wholesale & retail | 2025 |
| B&B Vekaria Ltd | Real estate | 2024 |
| B&G Property Holdings Ltd | Real estate | 2023 |
| B&L Ventures Ltd | Wholesale & retail | 2025 |
| B&S Plastics Ltd | Manufacturing | 2019 |
| B&T Forever Ltd | Administrative & support | 2026 |
| B,Bechat Ltd | Wholesale & retail | 2020 |
| B-Field Consulting Ltd | Administrative & support | 2018 |
| B-Live Digital Limited | Wholesale & retail | 2017 |
| B-Seated Ltd | Manufacturing | 2009 |
| B-Spoke Group Ltd | Financial services | 2020 |
| B-Spoke Investing Ltd | Real estate | 2024 |
| B-Transformed Mission Agency | Information & communication | 2023 |
| B. Electrical and Property Maintenance Limited | Construction | 2026 |
| B. Hobson (Contractors) Limited | Water & waste | 1974 |
| B.A.K.R Transport Ltd | Transport & logistics | 2018 |
| B.C. Metal Finishing Services Limited | Manufacturing | 1987 |
| B.E. Design Engineering Limited | Professional & scientific | 2018 |
| B.H.E.Services(Bolton)Limited | Construction | 1971 |
| B.L.G.C. Trading Company Limited | Hospitality | 2003 |
| B.S. Transport Contractors Limited | Transport & logistics | 2026 |
| B.S.M.W. (Holdings) Limited | Real estate | 1963 |
| B.Walkden Properties Ltd | Real estate | 2025 |
| B128 Ltd | Real estate | 2025 |