| Bibby Financial Services (UK) Limited | Financial services | 2014 |
| Bibby Financial Services Limited | Financial services | 1998 |
| Bibby Foreign Exchange Limited | Financial services | 2014 |
| Bibby FS (Holdings) Limited | Financial services | 1995 |
| Bibby Holdings Limited | Financial services | 1970 |
| Bibby Invoice Discounting Limited | Financial services | 2000 |
| Bibby Invoice Finance UK Limited | Financial services | 2014 |
| Bibby Leasing Limited | Financial services | 1957 |
| Bibby Line Group Limited | Financial services | 1891 |
| Bibby Line Group Pension Trustee Limited | Financial services | 2018 |
| Bibby Line Limited | Transport & logistics | 2007 |
| Bibby Marine Limited | Transport & logistics | 1884 |
| Bibby Marine Management Limited | Transport & logistics | 2016 |
| Bibby Marine Services Limited | Transport & logistics | 2015 |
| Bibby Maritime Crewing Services Limited | Administrative & support | 2015 |
| Bibby Maritime Limited | Transport & logistics | 1975 |
| Bibby Payroll Services Ltd | Professional & scientific | 2008 |
| Bibby Pioneer Limited | Transport & logistics | 2016 |
| Bibby Progress Limited | Transport & logistics | 2015 |
| Bibby Revolving Finance Limited | Financial services | 2011 |
| Bibby Taurus Limited | Financial services | 2008 |
| Bibby Trade Factors Limited | Financial services | 2004 |
| Bibby Trade Services Limited | Financial services | 1998 |
| Bibby Trader Limited | Extraterritorial | 1993 |
| Bibby Wavemaster 2 Limited | Transport & logistics | 2017 |
| Bibby Wavemaster 3 Limited | Transport & logistics | 2024 |
| Bibby Wavemaster I Limited | Transport & logistics | 2015 |
| Bickerstaffe Boat Company Limited | Manufacturing | 2014 |
| Bickerstaffe Children's Services Limited | Education | 2005 |
| Bickerton Poacher PUB Co Limited | Hospitality | 2011 |
| Bics DIY Limited | Wholesale & retail | 2023 |
| BID Management Services Limited | Professional & scientific | 2018 |
| Bidability (South) Limited | Professional & scientific | 2015 |
| Bidability Limited | Professional & scientific | 2010 |
| Biddebuy Ltd | Wholesale & retail | 2026 |
| Bidston FOX Ltd | Information & communication | 2026 |
| Bidwai Medical Limited | Health & social care | 2026 |
| Bidyland Ltd | Administrative & support | 2018 |
| Bien & Myrna Express Cargo UK Ltd | Other services | 2017 |
| Bientecs Ltd | Other services | 2008 |
| Bier Stein Tavern Limited | Hospitality | 2025 |
| Bifia Company Limited | Wholesale & retail | 2021 |
| Big and Bouncy Ltd | Arts & recreation | 2025 |
| Big BOG Ltd | Manufacturing | 2026 |
| Big Box Gaming Ltd | Wholesale & retail | 2023 |
| Big Box Padel Club Limited | Extraterritorial | 2024 |
| Big Buddha Recovery Ltd | Transport & logistics | 2024 |
| Big Condo Training Academy CIC | Education | 2019 |
| Big Cookie Digital Ltd | Professional & scientific | 2024 |
| Big Creative Events UK Limited | Administrative & support | 2018 |
| Big Daddy D Transport Ltd | Transport & logistics | 2025 |
| Big Daddy Yankee Properties Limited | Real estate | 2022 |
| Big EGG Films Ltd | Information & communication | 2011 |
| Big Fang Birmingham Ltd | Hospitality | 2017 |
| Big Fang Bristol Ltd | Arts & recreation | 2018 |
| Big Fang Cardiff Ltd | Arts & recreation | 2018 |
| Big Fang Collective Ltd | Financial services | 2018 |
| Big Fang Glasgow Ltd | Arts & recreation | 2018 |
| Big Fang Holdings Limited | Financial services | 2021 |
| Big Fang Leisure Birmingham Ltd | Hospitality | 2019 |
| Big Fang Leisure Liverpool Ltd | Hospitality | 2018 |
| Big Fang Liverpool Ltd | Arts & recreation | 2016 |
| Big Fang London Ltd | Arts & recreation | 2018 |
| Big Fang Newcastle Ltd | Arts & recreation | 2018 |
| Big Fang Nottingham Ltd | Arts & recreation | 2018 |
| Big Fang Productions Ltd | Professional & scientific | 2017 |
| Big Fang Sheffield Ltd | Arts & recreation | 2018 |
| Big Fang Stratford Limited | Arts & recreation | 2024 |
| Big Fella Removals Limited | Transport & logistics | 2024 |
| Big Fit Nutrition Ltd | Manufacturing | 2019 |
| Big Foot Transport Ltd | Transport & logistics | 2019 |
| Big Heart Book Club Ltd | Wholesale & retail | 2025 |
| Big Help Ethical Financial Services Limited | Financial services | 2021 |
| Big Help Green Ltd | Construction | 2019 |
| Big Help Group Ltd | Real estate | 2021 |
| Big Help Housing Co Ltd | Real estate | 2018 |
| Big Help Trading Co Ltd | Wholesale & retail | 2014 |
| Big Heritage C.I.C. | Arts & recreation | 2011 |
| Big Hospitality Group Ltd | Hospitality | 2017 |
| Big KAL Ltd | Wholesale & retail | 2019 |
| Big KIN Company Limited | Hospitality | 2024 |
| Big Lola's Taqueria Ltd | Extraterritorial | 2022 |
| Big Panther Limited | Hospitality | 2019 |
| Big Picture Events Limited | Administrative & support | 2013 |
| Big Property Holdings Limited | Construction | 2009 |
| Big Property Shop Ltd | Real estate | 2020 |
| Big T Asphalt & SON Ltd | Construction | 2024 |
| Big Teapot Ltd | Financial services | 2019 |
| Big Time Entertainment Ltd | Arts & recreation | 2023 |
| Big Voice - AIM High CIC | Education | 2020 |
| Big World IT Solutions Limited | Extraterritorial | 2024 |
| Bigblue Storage and Removals Limited | Transport & logistics | 2020 |
| Bigconnex Limited | Information & communication | 2015 |
| Bigdaddyinc Ltd | Information & communication | 2026 |
| Bigelaw & Co Limited | Professional & scientific | 2024 |
| Bigger Belly Ltd | Hospitality | 2026 |
| Bigger Picture Contracting Ltd | Administrative & support | 2014 |
| Bigz Caring Ltd | Health & social care | 2019 |
| Bijou Retro Vintage Ltd | Wholesale & retail | 2024 |
| Bijou Vintage Ltd | Wholesale & retail | 2018 |