| Blue Sun Property Ltd | Real estate | 2025 |
| Blue Tahiti Software Ltd | Information & communication | 2003 |
| Blue Wing Travels UK Ltd | Administrative & support | 2025 |
| Blue Wolff Services Ltd | Administrative & support | 2019 |
| Blue Zone Properties Ltd | Construction | 2023 |
| Bluebeard and Jones Limited | Information & communication | 2025 |
| Bluebell Web Design Ltd | Information & communication | 2006 |
| Bluebelleballoons Ltd | Hospitality | 2025 |
| Blueberry Willow Limited | Wholesale & retail | 2017 |
| Bluebird Horizon Limited | Information & communication | 2013 |
| Bluebird Property Investment Ltd | Construction | 2021 |
| Bluebox Associates Limited | Professional & scientific | 2018 |
| Bluecap Solutions Ltd | Information & communication | 2018 |
| Bluecarts Global Ltd | Wholesale & retail | 2025 |
| Bluecircle Residents Association Limited | Professional & scientific | 1982 |
| Bluedasher Learning Solutions Limited | Education | 2019 |
| Bluedoor Technology Ltd | Information & communication | 2026 |
| Bluedot Associates Ltd | Professional & scientific | 2011 |
| Bluedot Films Ltd | Information & communication | 2023 |
| Bluefield Construction Management Limited | Energy | 2023 |
| Bluefield Group Limited | Professional & scientific | 2019 |
| Bluefield Holdco Limited | Extraterritorial | 2022 |
| Bluefield Operations Limited | Professional & scientific | 2017 |
| Bluefield Renewable Developments Europe Limited | Financial services | 2023 |
| Bluefield Renewable Developments Limited | Energy | 2020 |
| Bluefield Services Limited | Administrative & support | 2015 |
| Bluefin Data Strategy Limited | Information & communication | 2021 |
| Bluefinled Marine Lighting Ltd | Extraterritorial | 2025 |
| Bluefinled Underwater Lighting Ltd | Extraterritorial | 2025 |
| Bluefloat Energy UK Holdings 2 Ltd | Energy | 2022 |
| Bluefloat Energy UK Holdings Limited | Energy | 2020 |
| Bluefloat Management UK Limited | Professional & scientific | 2021 |
| Bluefly Digital Ltd | Information & communication | 2009 |
| Bluegreen Learning Limited | Professional & scientific | 2011 |
| Blueline Automotive Ltd | Wholesale & retail | 2025 |
| Blueline Building Consultants Ltd | Construction | 2017 |
| Blueline Healthcare Solutions Ltd | Health & social care | 2015 |
| Bluenex Solutions Ltd | Information & communication | 2025 |
| Bluepeak Construction Ltd | Construction | 2015 |
| Bluepeak Facilities Ltd | Administrative & support | 2026 |
| Bluepoint Electrical Solutions Ltd | Construction | 2025 |
| Bluepoppy Consulting Ltd | Professional & scientific | 2012 |
| Bluepoppy Fleet Management Limited | Professional & scientific | 2023 |
| Bluepoppy Recruitment Solutions Limited | Administrative & support | 2014 |
| Blueprint Architects and Contractors Ltd | Construction | 2022 |
| Blueprint Bristol Ltd | Construction | 2022 |
| Blueprint Building Maintenance & Landscaping Ltd | Construction | 2014 |
| Blueprint Careers Ltd | Administrative & support | 2025 |
| Blueprint Marine Limited | Arts & recreation | 2012 |
| Blueprint Metrics Ltd | Information & communication | 2026 |
| Blueprint Programming & PT Limited | Other services | 2023 |
| Blueribbon Technologies Ltd | Information & communication | 2022 |
| Bluesky Letting Limited | Real estate | 2018 |
| Bluesky Technical Services Limited | Professional & scientific | 2023 |
| Bluespire Build Limited | Professional & scientific | 2013 |
| Bluestaar Limited | Wholesale & retail | 2018 |
| Bluestone Services (Bristol) Ltd | Construction | 2023 |
| Bluetherm Heating Ltd | Construction | 2021 |
| Bluetree Technologies Limited | Information & communication | 2006 |
| Bluetree Website Design Limited | Information & communication | 1984 |
| Bluevision AI Ltd | Information & communication | 2025 |
| Bluewater Design and Construction Ltd | Construction | 2023 |
| Bluewave Accountancy Ltd | Professional & scientific | 2005 |
| Bluewire Properties Limited | Construction | 2006 |
| Bluewire Technologies Ltd | Information & communication | 2005 |
| Bluforest Ltd | Wholesale & retail | 2021 |
| Blunden PUB Group Ltd | Hospitality | 2025 |
| Bluprint Artist Ltd | Manufacturing | 2013 |
| Bluqube Limited | Information & communication | 2011 |
| Blush Makeup Salon Ltd | Other services | 2020 |
| Bluu Vision Limited | Administrative & support | 2002 |
| Bluum Stores Ltd | Wholesale & retail | 2017 |
| BM Bath Road Limited | Hospitality | 2024 |
| BM Brislington Limited | Hospitality | 2024 |
| BM Chippy Worx Ltd | Manufacturing | 2026 |
| BM Creative Management Limited | Administrative & support | 2005 |
| BM Environmental Consultancy Limited | Professional & scientific | 2014 |
| BM Heating & Service Limited | Construction | 2024 |
| BM Holdings (South West) Limited | Professional & scientific | 2023 |
| BM IT Services Limited | Hospitality | 2024 |
| BM Lighting Ltd. | Information & communication | 2023 |
| BM Motoring Centre Limited | Wholesale & retail | 2006 |
| BMA Balu Ltd | Transport & logistics | 2026 |
| BMB Maintenance & Building Ltd | Construction | 2025 |
| BME Salon Limited | Other services | 2018 |
| BME Stores Limited | Wholesale & retail | 2025 |
| BMH Construction Limited | Construction | 2016 |
| BMH Specialist Construction Ltd | Construction | 2025 |
| BMI Ltd | Real estate | 2016 |
| BMK Care Ltd | Health & social care | 2023 |
| BMM Enterprise Ltd | Wholesale & retail | 2025 |
| Bmmac Limited | Information & communication | 2003 |
| BMP Data Ltd | Information & communication | 2026 |
| BMP Domestic Groundworks Limited | Construction | 2003 |
| BMR Music Ltd | Information & communication | 2025 |
| BMR Solutions Limited | Administrative & support | 2003 |
| Bmrs Group Limited | Financial services | 2024 |
| Bmsa Limited | Arts & recreation | 1996 |
| BMT Enterprises Ltd | Hospitality | 2011 |
| BMV Bristol Ltd | Hospitality | 2025 |