| Blueoak Consulting Limited | Information & communication | 2021 |
| Blueoaktrading Ltd | Wholesale & retail | 2025 |
| Blueoceanix Group Ltd | Wholesale & retail | 2021 |
| Blueonyx Digital Ltd | Wholesale & retail | 2025 |
| Blueorbit Solutions LLP | | 2021 |
| Bluepeak for Construction Ltd | Extraterritorial | 2025 |
| Bluepeak for Services Limited | Extraterritorial | 2026 |
| Bluepeak for Trading & Services Ltd | Extraterritorial | 2026 |
| Bluepeak Realty Ltd | Hospitality | 2024 |
| Bluepeak Supply Ltd | Wholesale & retail | 2025 |
| Blueprint Consortium Ltd | Professional & scientific | 2025 |
| Blueprint Creation Limited | Other services | 2012 |
| Blueprint Digital Limited | Information & communication | 2015 |
| Blueprint Engineering Consulting Ltd | Construction | 2024 |
| Blueprint Investments Limited | Financial services | 1995 |
| Blueprint Lighting Ltd | Information & communication | 2015 |
| Blueprint Medical Limited | Health & social care | 2022 |
| Blueprint Studios Limited | Arts & recreation | 2004 |
| Blueprint Syndicate Ltd | Financial services | 2018 |
| Bluepscie Ltd | Professional & scientific | 2021 |
| Blueraiin Healthcare Private Limited | Hospitality | 2013 |
| Bluereen Media Ltd | Professional & scientific | 2024 |
| Bluerock Berlin Growth 3 Limited | Administrative & support | 2016 |
| Bluerock Charlottenburg LP | | 2017 |
| Bluerock Einemstrasse LP | | 2016 |
| Bluerock for Investment & Trading Limited | Extraterritorial | 2026 |
| Bluerock for Investment Limited | Extraterritorial | 2026 |
| Bluerock Holdings 4 LP | | 2020 |
| Bluerock Opportunities 2 LP | | 2016 |
| Bluerock Opportunities 3 Limited | Construction | 2016 |
| Bluerock Opportunities 3 LP | | 2016 |
| Bluerock Opportunities 4 LP | | 2016 |
| Bluerock Value Kreuzberg 1 LP | | 2016 |
| Bluerose Engineering Limited | Professional & scientific | 2007 |
| Bluesky Contracting Solutions Ltd | Administrative & support | 2020 |
| Bluesky for Investment Limited | Extraterritorial | 2026 |
| Bluesky Properties (M/Cr) Limited | Real estate | 2023 |
| BLUESKY3PL Ltd | Transport & logistics | 2025 |
| Bluestar Financial Solutions Limited | Administrative & support | 2019 |
| Bluestar Products Ltd | Manufacturing | 2016 |
| Bluestar Services Limited | Health & social care | 2025 |
| Bluestone Aggregates Ltd | Wholesale & retail | 2021 |
| Bluestone for General Trading Limited | Extraterritorial | 2026 |
| Bluestone for Trading Limited | Extraterritorial | 2026 |
| Bluestone Global Ltd | Wholesale & retail | 2018 |
| Bluestone Investment (MCR) Ltd | Real estate | 2025 |
| Bluestone Security Services Limited | Administrative & support | 2013 |
| Bluestone Trading Limited | Other services | 2024 |
| Bluestream International Ltd | Wholesale & retail | 2026 |
| Bluesun Pv.Ph Co., Ltd | Manufacturing | 2024 |
| Bluetrust Limited | Administrative & support | 2003 |
| Bluevale Property Limited | Real estate | 2025 |
| Bluevalley Group Limited | Wholesale & retail | 2023 |
| Bluewater Building Ltd | Construction | 2025 |
| Bluewater Property Holdings Limited | Real estate | 2020 |
| Bluewater Property Partners Ltd | Real estate | 2024 |
| Bluewater Techy Ltd | Wholesale & retail | 2025 |
| Bluewaters International Ltd | Wholesale & retail | 2023 |
| Bluewave Apparel Ltd | Wholesale & retail | 2024 |
| Blueway Associates Limited | Manufacturing | 2002 |
| Bluewell Ventures Ltd | Professional & scientific | 2013 |
| Blufin Consulting Ltd | Professional & scientific | 2025 |
| Blumeadows Limited | Mining & quarrying | 2015 |
| Blumefield Ltd | Information & communication | 2025 |
| Blumii Consulting Ltd | Information & communication | 2024 |
| Blundell's Wood Management Company Limited | Extraterritorial | 2012 |
| Blush 212 Ltd | Other services | 2021 |
| Blush Beauty Bar and Salon Ltd | Other services | 2020 |
| Blush Candle Company Ltd | Manufacturing | 2025 |
| Blush LAB Ltd | Wholesale & retail | 2026 |
| Blush Shellac Nails & Beauty Ltd | Other services | 2018 |
| Blush Textile Ltd | Manufacturing | 2025 |
| Blush Wigan Ltd | Wholesale & retail | 2024 |
| Blushed Beauty Clinic Limited | Other services | 2025 |
| Blushing Haze by DEE Limited | Manufacturing | 2025 |
| Bluz Trading Ltd | Wholesale & retail | 2024 |
| BLV Consultancy Ltd | Professional & scientific | 2023 |
| BLW Property Limited | Financial services | 2022 |
| Blyth Industrial Assets (NO 1) Limited | Extraterritorial | 2017 |
| Blyth Industrial Assets (NO 2) Limited | Extraterritorial | 2017 |
| BM B General Trading Ltd | Wholesale & retail | 2023 |
| BM Contracting Ltd | Construction | 2025 |
| BM Hospitality & Events Ltd | Hospitality | 2021 |
| BM Jade Ltd | Wholesale & retail | 2026 |
| BM Julye Ltd | Information & communication | 2022 |
| BM Manzan UK Ltd | Wholesale & retail | 2021 |
| BM Partnership Ltd | Health & social care | 2024 |
| BM Show Limited | Information & communication | 2015 |
| Bm&Lm Sweets Ltd | Hospitality | 2025 |
| BM42 Solutions Limited | Information & communication | 2022 |
| Bmac Limited | Manufacturing | 2005 |
| BMB Property Group Ltd | Real estate | 2026 |
| Bmbb Residents Assocation Limited | Arts & recreation | 2025 |
| BMC Land and Property Trust | Real estate | 2005 |
| BMC Land Holdings Limited | Professional & scientific | 1986 |
| Bmdk IT Solutions Ltd | Information & communication | 2023 |
| BME Learning Disability Support Services Limited | Health & social care | 2018 |
| Bmeals Ltd | Health & social care | 2025 |
| BMG Accountancy Limited | Professional & scientific | 2006 |
| BMG for Trading Company Ltd | Wholesale & retail | 2021 |