| Bavarian Automotive Limited | Wholesale & retail | 2022 |
| Bawuah Estate Ltd | Financial services | 2025 |
| Bay Horse PUB & Restaurant Ltd | Hospitality | 2024 |
| Bay Learning Academy CIC | Education | 2022 |
| Baya Blanca Ltd | Construction | 2025 |
| Bayleaf Investments Limited | Wholesale & retail | 2002 |
| Bayleaf Property Limited | Real estate | 2007 |
| Bayt SA Limited | Real estate | 2024 |
| Bayz Yard Ltd | Hospitality | 2026 |
| BAZ Mobiles Limited | Wholesale & retail | 2016 |
| BB Freight Ltd | Transport & logistics | 2013 |
| BBN Trade Ltd | Hospitality | 2020 |
| BBQ 44 Grill Ltd | Hospitality | 2024 |
| BBQ House Hull Limited | Hospitality | 2018 |
| BCA Corporate Finance Limited | Financial services | 2006 |
| BCA Hull 1 Limited | Professional & scientific | 2018 |
| Bcca (Building Control Competency Assessment) Ltd | Extraterritorial | 2023 |
| BCH Blade Repairs Ltd | Manufacturing | 2026 |
| BCH Wind Services Ltd | Manufacturing | 2026 |
| Bcjd Ltd | Health & social care | 2021 |
| BCK Windows Ltd | Construction | 2019 |
| Bckp Properties Limited | Real estate | 2018 |
| BCP 101 Limited | Financial services | 2024 |
| BCS Management Accountancy Ltd | Professional & scientific | 2010 |
| BD Food Hull Limited | Wholesale & retail | 2018 |
| BD Hull Ltd | Hospitality | 2019 |
| BD Leisure Ltd | Hospitality | 2024 |
| BDJ Wind Services Limited | Manufacturing | 2025 |
| BDP Inc International Limited | Information & communication | 2015 |
| BDW Insurance Solutions Ltd | Financial services | 2011 |
| BE YOU Co Limited | Education | 2026 |
| BE YOU Education (Post 16) Limited | Education | 2026 |
| BE YOU Education Group Limited | Financial services | 2026 |
| BE YOU Education Limited | Education | 2025 |
| Be&Jonature Ltd | Manufacturing | 2024 |
| Beaconbright Ltd | Construction | 2018 |
| Beadle Marine & Subsea Limited | Manufacturing | 2020 |
| Bealnews Limited | Information & communication | 2009 |
| Bean Group Limited | Information & communication | 2020 |
| Beans Please Ltd | Wholesale & retail | 2023 |
| Bear and Willow HR Ltd | Administrative & support | 2025 |
| Bear Construction Hull Ltd | Professional & scientific | 2023 |
| Bear Developments Ltd | Real estate | 2023 |
| Beard Monsters Limited | Wholesale & retail | 2019 |
| Beau Developments Ltd | Professional & scientific | 2013 |
| Beaulah Woodworking Limited | Manufacturing | 2008 |
| Beaumonts Grounds Maintenance Limited | Administrative & support | 2024 |
| Beaute 21 Limited | Other services | 2013 |
| Beautiful Corner Ltd | Hospitality | 2023 |
| Beautique Learning and Training Academy Ltd | Education | 2023 |
| Beauty Academy by Debbie Askey Ltd | Education | 2024 |
| Beauty Bar by Jane Ltd | Wholesale & retail | 2025 |
| Beauty Brow Bar Hull Ltd | Other services | 2023 |
| Beauty by Farrah Limited | Other services | 2024 |
| Beauty Design Hub Limited | Information & communication | 2019 |
| Beauty Planet Hair Salon Limited | Other services | 2018 |
| Beauty Principles Limited | Other services | 2025 |
| Beauty Retreat (Hull) Limited | Other services | 2018 |
| BEAUTY8 Limited | Other services | 2017 |
| Beautybyleeyah Ltd | Other services | 2025 |
| Becker U K Limited | Manufacturing | 1982 |
| Beckery Construction Company Limited | Construction | 2022 |
| Becks Outfitters Limited | Manufacturing | 2021 |
| Becks Property Investment Ltd | Real estate | 2024 |
| Beckside Events Ltd | Administrative & support | 2014 |
| BED World (Holdings) Limited | Financial services | 2025 |
| Bedding & Linen Ltd | Wholesale & retail | 2014 |
| Bedroomworks Limited | Extraterritorial | 2014 |
| Beds Away Ltd | Real estate | 2021 |
| Beds on Legs Ltd | Wholesale & retail | 2009 |
| BEE & ROO Ltd | Manufacturing | 2024 |
| BEE Fire Protection Limited | Construction | 2022 |
| BEE Interiors Limited | Construction | 2016 |
| Beech Inspection Services Limited | Professional & scientific | 2026 |
| Beech Lawn | | 2003 |
| Beech Solar Limited | Construction | 2023 |
| Beechwood Joinery and Management Services Limited | Professional & scientific | 2016 |
| Beechwood Mobility Limited | Wholesale & retail | 2003 |
| Beercocks Limited | Real estate | 2003 |
| Beetle Tree Ltd | Agriculture & fishing | 2025 |
| Before Earth Limited | Wholesale & retail | 2023 |
| Beggars Belief Distribution Limited | Wholesale & retail | 2009 |
| Begreen Developments Ltd | Construction | 2025 |
| BEK Investments Hull Limited | Financial services | 2020 |
| Bekhal 1 International Ltd | Wholesale & retail | 2026 |
| Bekhal International Foods Ltd | Wholesale & retail | 2025 |
| Bekhal International Foodz Ltd | Wholesale & retail | 2021 |
| Belcroft Consulting Limited | Professional & scientific | 2019 |
| Belectric Limited | Construction | 1997 |
| Beleza Beauty Hull Ltd | Other services | 2020 |
| Bell House Bradford Ltd | Real estate | 2023 |
| Bell Lifting Services Ltd | Professional & scientific | 2022 |
| Bella & Bertie's Ltd | Wholesale & retail | 2019 |
| Bella Cataleya Ltd | Transport & logistics | 2025 |
| Bella's Bar Hull Ltd | Professional & scientific | 2024 |
| Bella's Room Ltd | Real estate | 2025 |
| Belleisle Tailoring Limited | Manufacturing | 2024 |
| Bellenotion Limited | Wholesale & retail | 2024 |
| Bellfield GAS Services Ltd | Construction | 2023 |
| Bellfield Joinery Limited | Construction | 2026 |