| Aromatic Bouquets Ltd | Manufacturing | 2025 |
| Arthur Wood Limited | Wholesale & retail | 1997 |
| Asembli Limited | Information & communication | 2020 |
| Aslan TR Ltd | Hospitality | 2024 |
| Asob Commercial Ltd | Administrative & support | 2025 |
| Aspect Services Group Ltd | Manufacturing | 2020 |
| Aspect View Blinds & Carpets Limited | Wholesale & retail | 2013 |
| Astra Vehicle Technologies Limited | Manufacturing | 2005 |
| Astral Property Services Limited | Construction | 2024 |
| Atelier HS Limited | Administrative & support | 2024 |
| Attire Menswear Limited | Wholesale & retail | 2012 |
| Audiocosm Ltd | Other services | 2021 |
| Auto Defiance Ltd | Wholesale & retail | 2011 |
| Autoworx Motorsport Ltd | Wholesale & retail | 2025 |
| AV Dream Properties UK Limited | Real estate | 2025 |
| Avms Consulting Limited | Professional & scientific | 2026 |
| Avseren Ltd | Hospitality | 2023 |
| AW Consultancy (NW) Limited | Professional & scientific | 2013 |
| AWM Property Group Limited | Real estate | 2022 |
| Axiom Analytical Laboratories Limited | Professional & scientific | 2001 |
| Axis Talent Limited | Administrative & support | 2017 |
| Axys Investment Management Limited | Professional & scientific | 2012 |
| Ayia Management Limited | Professional & scientific | 2019 |
| AZB2 Limited | Wholesale & retail | 2019 |
| B G Rowlands Property Investments Ltd | Real estate | 2023 |
| B.C.A. Direct Limited | Health & social care | 1996 |
| Baby Scanning Boutique Ltd | Health & social care | 2020 |
| Bacchus Luxury Travel Limited | Administrative & support | 2024 |
| Balmane Developments Ltd | Construction | 2014 |
| Banklands Tactic Ltd | Transport & logistics | 2005 |
| Barber Boss Ltd | Other services | 2026 |
| Barbers Station Limited | Other services | 2015 |
| Barnes Commercial Finance Limited | Financial services | 2024 |
| Barry Property Developments Limited | Real estate | 2024 |
| Barry R Johnson Limited | Arts & recreation | 2004 |
| Baskit UK Ltd | Wholesale & retail | 2025 |
| Bawns Limited | Administrative & support | 2018 |
| Bawo Ltd | Construction | 2023 |
| Baytree Conservatories Limited | Construction | 2002 |
| Bboy Memo Limited | Transport & logistics | 2017 |
| BD Fine Foods Ltd | Hospitality | 2025 |
| Beachers Coaches Ltd | Transport & logistics | 2015 |
| Beatrice Dosgheas Ltd | Real estate | 2025 |
| Bedford Steel Fabrications Ltd | Manufacturing | 2012 |
| BEE Move Logistics Ltd | Administrative & support | 2024 |
| Beech House Deeside Limited | Construction | 2005 |
| Beeston Boats Ltd | Manufacturing | 2020 |
| Beezlogic Consulting Ltd | Information & communication | 2014 |
| Bejam Freezer Food Centres Limited | Professional & scientific | 1988 |
| Bejam Group Limited | Professional & scientific | 1967 |
| Belbeau Property Investments Ltd | Real estate | 2026 |
| Bell Automotive Limited | Wholesale & retail | 2014 |
| Bella's Hair and Beauty Limited | Other services | 2019 |
| Belli & Burns Limited | Administrative & support | 2019 |
| Belli & Jones Property Ltd | Hospitality | 2024 |
| BEN Eckard Civils Ltd | Construction | 2026 |
| Benjzico Ltd | Professional & scientific | 2025 |
| Benson Tree Services Limited | Administrative & support | 2025 |
| Berat Transport Limited | Transport & logistics | 2014 |
| Bespoke Asset Management Limited | Administrative & support | 2018 |
| Bespoke Mortgage & Protection Services Ltd | Financial services | 2019 |
| Bespoke Project Management Limited | Administrative & support | 2017 |
| Betts Associates Limited | Construction | 2003 |
| Betts GEO Environmental Limited | Construction | 2006 |
| Betts Hydro Limited | Professional & scientific | 2015 |
| Bevris Support Ltd | Health & social care | 2013 |
| Bhairava Limited | Real estate | 2025 |
| Bigbudbama Limited | Financial services | 2025 |
| BIM Project Solutions Ltd | Information & communication | 2021 |
| Bimsync Solutions Limited | Professional & scientific | 2024 |
| Bingora Ltd | Water & waste | 2017 |
| Biofortuna Limited | Manufacturing | 2008 |
| Black Oak Estates Ltd | Real estate | 2015 |
| Black Paul & Sons Ltd | Transport & logistics | 2022 |
| Blade Barber CH5 Ltd | Other services | 2026 |
| Blade Hair Style Wirral Ltd | Other services | 2026 |
| Blessed Brothers Ltd | Transport & logistics | 2021 |
| BLT International Ltd | Wholesale & retail | 2025 |
| Blue Rock NW Ltd | Construction | 2025 |
| Blue Sands Foundation | Agriculture & fishing | 2022 |
| Bobo Components Ltd | Administrative & support | 2024 |
| Boden Technical Design Management Ltd | Professional & scientific | 2026 |
| Booker Design Limited | Manufacturing | 2019 |
| Boomy Reactions Ltd | Information & communication | 2025 |
| Border Surveyors Limited | Professional & scientific | 2011 |
| Boss Inspections Limited | Professional & scientific | 2024 |
| Bowen Fisheries and Camping Ltd | Agriculture & fishing | 2023 |
| Bozkaya Ltd | Hospitality | 2022 |
| BP Operations Limited | Hospitality | 2026 |
| Bradgate - Unitech Limited | Professional & scientific | 1969 |
| Bram Estates Limited | Real estate | 2018 |
| Brambles Garden Services Limited | Administrative & support | 2016 |
| BRF Consulting Ltd | Information & communication | 2020 |
| Brickmatch Limited | Extraterritorial | 2008 |
| Brilliant Barbers Ltd | Other services | 2026 |
| Bromborough Plastics Limited | Water & waste | 1995 |
| Bromii Ltd | Transport & logistics | 2022 |
| Bryant Electrics (UK) Limited | Construction | 2009 |
| Buckleberg Group Ltd | Wholesale & retail | 2021 |
| Build Matcher Developments Ltd | Construction | 2025 |