| Assure Estates Ltd | Wholesale & retail | 2019 |
| Assured Claims Group Ltd | Administrative & support | 2022 |
| Astec Electrical Services Limited | Construction | 2007 |
| AT Large Visuals Ltd | Professional & scientific | 2023 |
| AT Your Leisure Ltd | Real estate | 2023 |
| Ataf Group Limited | Wholesale & retail | 2025 |
| Atrina Drilling Limited | Mining & quarrying | 2013 |
| ATT Fashion Ltd | Wholesale & retail | 2022 |
| Atticus Consult Ltd | Professional & scientific | 2024 |
| Atzi Patzi Ltd | Wholesale & retail | 2026 |
| Audio With Intelligence Limited | Manufacturing | 2022 |
| Aughton Consulting Limited | Professional & scientific | 2021 |
| Aughton Heating & Plumbing Limited | Construction | 2021 |
| Aughton Institute Limited (the) | Arts & recreation | 1907 |
| Aughton Lawn Tennis Club Limited | Arts & recreation | 2021 |
| Aughton Street Leisure Ltd | Hospitality | 2025 |
| Aughton Street Wholesalers Ltd | Hospitality | 2024 |
| Aughton Wellness Limited | Other services | 2024 |
| Autumn Wealth Ltd | Administrative & support | 2023 |
| AVM Aesthetics Ltd | Other services | 2017 |
| AVT Services Limited | Construction | 2001 |
| Awaken (Aughton) Limited | Arts & recreation | 2025 |
| Azzurri Business Services Limited | Professional & scientific | 2020 |
| B a Corporation Limited | Professional & scientific | 2008 |
| B Madden Training Ltd | Education | 2021 |
| B3 the Adventure Ltd | Wholesale & retail | 2024 |
| Baba Burgerz Ltd | Hospitality | 2022 |
| Baby Blythe Investments | Financial services | 2025 |
| Back Moss Investments Limited | Real estate | 2018 |
| Backdoors Ltd | Real estate | 2024 |
| Bailey & Johnston Ltd | Professional & scientific | 2022 |
| Bakers Green Consultancy Limited | Financial services | 2016 |
| Balanced Health & Fitness Limited | Arts & recreation | 2026 |
| Balanced Heath & Fitness Ltd | Arts & recreation | 2026 |
| Balkan Treasures Ltd | Wholesale & retail | 2021 |
| Ballast London Holdings Limited | Professional & scientific | 2026 |
| Balloon and Party Warehouse Ltd | Wholesale & retail | 2024 |
| Bandhu Limited | Health & social care | 2014 |
| BAR1 Brands Limited | Manufacturing | 2022 |
| Barefoot Products Ltd | Construction | 2025 |
| Barley Mere RTM Company Ltd | Households | 2012 |
| Barlow Developments Limited | Construction | 2010 |
| Barnet O' Brien LLP | | 2006 |
| Barracuda Business Park Management Company Ltd | Extraterritorial | 2021 |
| Barrow Nook Sanctuary Ltd | Agriculture & fishing | 2025 |
| Baseline Elevators Ltd | Professional & scientific | 2023 |
| Bastion Value Creation Limited | Professional & scientific | 2021 |
| Baxy Electrics Limited | Construction | 1996 |
| Baybutt & Sons Limited | Agriculture & fishing | 1982 |
| Baybutt Farms Limited | Agriculture & fishing | 2017 |
| BBO Spencer Limited | Real estate | 2020 |
| BDL Rentals Limited | Real estate | 2026 |
| Beacon Financial Training Limited | Education | 2007 |
| Beacon Fold Property Services Limited | Real estate | 2013 |
| Beautification Limited | Other services | 2024 |
| Beautiful Beginnings Day Nursery Ltd | Education | 2009 |
| Beauty by Olivia Ltd | Other services | 2019 |
| Beauty Worx Aesthetics Ltd | Other services | 2019 |
| Beesley Fabrication & Welding Services Limited | Manufacturing | 2011 |
| Beesley Group Holdings Ltd | Financial services | 2024 |
| Before Public Limited | Financial services | 2021 |
| Bella Boutique Ormskirk Ltd | Wholesale & retail | 2019 |
| Bellissimerch Limited | Manufacturing | 2023 |
| Belvedere Entertainments UK Ltd | Arts & recreation | 2017 |
| BEN Binns Development Ltd | Construction | 2016 |
| BEN Carbery Limited | Construction | 2025 |
| Bendy Wendy Ltd | Wholesale & retail | 2025 |
| Berry House Management Limited | Households | 2002 |
| Berry UK Bidco Limited | Information & communication | 2021 |
| Bescar Croft Manco Limited | Households | 2020 |
| Bespoke Blinds and Furnishings Ltd | Wholesale & retail | 2023 |
| Best Easy Books Ltd | Information & communication | 2017 |
| Beyond Beautiful Slimming Limited | Arts & recreation | 2019 |
| BF Supplements Ltd | Wholesale & retail | 2020 |
| BFS Timber Ltd | Construction | 2026 |
| BIC Technology Limited | Professional & scientific | 2007 |
| Big Bird Corporation Eight | | 1996 |
| Big Bird Corporation Five | | 1995 |
| Big Bird Corporation Four | | 1996 |
| Big Bird Corporation One | | 1995 |
| Big Bird Corporation Seven | | 1996 |
| Big Bird Corporation SIX | | 1996 |
| Big Bird Corporation Three | | 1997 |
| Big Bird Corporation Two | | 1995 |
| Bijou Property Ltd | Real estate | 2024 |
| Bikesport UK Ltd | Wholesale & retail | 2023 |
| Billinge Transport Ltd | Transport & logistics | 2015 |
| Biomass Woodchip Limited | Manufacturing | 2016 |
| Biopower Solutions Ltd | Extraterritorial | 2017 |
| Birkdale Village Developments Limited | Construction | 2019 |
| Birrell Associates Ltd | Health & social care | 2020 |
| Bishop Finance Limited | | 2009 |
| Bishops Senior Care Limited | Other services | 2011 |
| Bisp Solutions Ltd | Arts & recreation | 2020 |
| BKR Engineering Services Limited | Professional & scientific | 2011 |
| BL Chauffeurs Limited | Transport & logistics | 2025 |
| Black Cat Medicines Limited | Wholesale & retail | 2013 |
| Blackacre Newco 2 Limited | Financial services | 2025 |
| Blackacre Propco Limited | Real estate | 2025 |
| Blair ES Limited | Professional & scientific | 2025 |