| Based at Base Ltd | Other services | 2024 |
| Battswood Cabins Limited | Hospitality | 2025 |
| Bawn Lodge Limited | Hospitality | 2009 |
| Bayliss Baines Ltd | Professional & scientific | 1998 |
| Baynon Property Services Limited | Administrative & support | 2010 |
| Baynuul Limited | Hospitality | 2020 |
| BBA Associates Ltd | Professional & scientific | 2021 |
| Bbhs Installations Limited | Construction | 2018 |
| BBS Group Holdings Limited | Professional & scientific | 2024 |
| BC Construction (NW) Ltd | Construction | 2025 |
| BCC Property Rentals & Developments Limited | Real estate | 2015 |
| BD Group (WXM) Ltd | Wholesale & retail | 2025 |
| BD Kitchens Ltd | Wholesale & retail | 2026 |
| BDA Kitchens Ltd | Wholesale & retail | 2026 |
| BDL Contracts and Design Limited | Construction | 2014 |
| BDS Enterprises Limited | Administrative & support | 2006 |
| BDS Takeaway Ltd | Hospitality | 2026 |
| Bear RAM ELK Limited | Information & communication | 2015 |
| Beard & Aston Property Management Ltd | Real estate | 2012 |
| Beati Copia Trading Ltd | Wholesale & retail | 2024 |
| Beauty by Natasha Messaoud Ltd | Other services | 2020 |
| Bebbington & Williams Fishmongers Ltd | Wholesale & retail | 2015 |
| Becksdvds Limited | Information & communication | 2005 |
| Beckwith and Fuller Events Limited | Arts & recreation | 2019 |
| Beddlestead Limited | Hospitality | 2015 |
| BEE Energy Smart Ltd | Construction | 2024 |
| BEE Weave Ltd | Other services | 2019 |
| BEE Wordy Ltd | Arts & recreation | 2020 |
| Beechley Properties Wrexham Limited | Construction | 1959 |
| Beechwood Medical Ltd | Health & social care | 2013 |
| Beecroft & Hearfield Limited | Real estate | 2024 |
| Belgrave Wincham Limited | Financial services | 2019 |
| Bell Property Management Ltd | Households | 2024 |
| Bell Waste Management Limited | Water & waste | 2014 |
| Bellbrick Properties Limited | Real estate | 2026 |
| Bellevue Grill & Fish Ltd | Hospitality | 2022 |
| Bellikli Mobile Chef Ltd | Hospitality | 2025 |
| Belmont House WXM Management Company Limited | Real estate | 2018 |
| Belter Deals Ltd | Wholesale & retail | 2024 |
| BEN Griffiths Saddlery Ltd | Wholesale & retail | 2026 |
| BEN Owen Services Ltd | Transport & logistics | 2022 |
| BEN Wilson Cardiac Ltd | Health & social care | 2024 |
| Benco Safety Limited | Wholesale & retail | 2019 |
| Bennett & Associates Wealth Management Limited | Financial services | 2023 |
| Benoy Consulting Ltd | Professional & scientific | 2021 |
| Bersham Solutions Limited | Professional & scientific | 2025 |
| Berwyn Forestry LLP | | 2020 |
| Bespoke AI Solutions Ltd | Information & communication | 2025 |
| Bespoke PC Builds Limited | Wholesale & retail | 2023 |
| Bespoke Review Ltd | Financial services | 2019 |
| Best Companies Consulting Limited | Professional & scientific | 2002 |
| Best CUT Barber Wrexham Limited | Other services | 2026 |
| Best Cuts 1 Barber Limited | Other services | 2025 |
| Best Cuts Wrexham Ltd | Other services | 2024 |
| Best Motor Works UK Limited | Wholesale & retail | 2025 |
| Bevans Jewellery & Watch Workshop Limited | Other services | 2024 |
| BH Associates Limited | Professional & scientific | 2022 |
| BH Black Peppers Ltd | Hospitality | 2025 |
| Bharti Gittins Limited | Administrative & support | 2014 |
| BIB Solutions Limited | Administrative & support | 2024 |
| Bicks Chicks Limited | Wholesale & retail | 2006 |
| Bien Invest Ltd | Real estate | 2019 |
| Big Guy's Kitchen Ltd | Hospitality | 2016 |
| Big Hand ALE Houses Ltd | Hospitality | 2001 |
| BIL Installations Ltd | Construction | 2011 |
| Billington Autos Ltd | Wholesale & retail | 2012 |
| Billington Farms Limited | Agriculture & fishing | 2021 |
| Billington Haulage Ltd | Wholesale & retail | 2025 |
| Billington Land and Property Limited | Real estate | 2025 |
| Billington Stud Farms Limited | Agriculture & fishing | 2021 |
| Billington Trading Limited | Financial services | 2025 |
| Birchdane Business Services Limited | Administrative & support | 2015 |
| Birchdane Consulting Ltd | Other services | 2012 |
| Birdie Freaks Ltd | Arts & recreation | 2025 |
| Bistro Lafant Ltd | Hospitality | 2025 |
| BJH Contracting Solutions Ltd | Financial services | 2012 |
| BJJ Contracts Limited | Construction | 2014 |
| BL Complete Flooring Ltd | Construction | 2017 |
| Black Park Chapel Trust Limited | Health & social care | 2009 |
| Black Park Community Centre Ltd | Arts & recreation | 2014 |
| Black Seven Holdings Ltd | Financial services | 2025 |
| Black Seven Music Ltd | Information & communication | 2020 |
| Black's Pies Limited | Manufacturing | 2017 |
| Blackhaus Events Ltd | Arts & recreation | 2025 |
| Blacklane Ltd | Real estate | 2010 |
| Blaze the Lash Room Ltd | Other services | 2019 |
| BLEND52 Limited | Professional & scientific | 2014 |
| Bliss Wealth Estates Limited | Real estate | 2024 |
| Bljs Holdings Limited | Hospitality | 2024 |
| Block B Erddig Road Management Company Limited | Real estate | 2016 |
| Bloomers Wellbeing / Lles Blodau CIC | Health & social care | 2025 |
| Blooming Payroll Limited | Professional & scientific | 2026 |
| Blossom Hill Estates Ltd | Professional & scientific | 2020 |
| Blowby Chester Ltd | Other services | 2016 |
| Blowing UP Big Time Limited | Arts & recreation | 2022 |
| Blue Arrow Leadership Limited | Other services | 2024 |
| Blue Door Software Limited | Information & communication | 2006 |
| Blue Mini Market REX Ltd | Wholesale & retail | 2025 |
| Blue Mustard Ventures Limited | Financial services | 2026 |
| Blueprint Planning and Building Design Limited | Professional & scientific | 2005 |