| BNZ 1 Limited | Transport & logistics | 2011 |
| BOA Construction (Brighton) Limited | Construction | 2018 |
| BOA Trust | Education | 2009 |
| Boah Ltd | Real estate | 2018 |
| Boaj Services Ltd | Administrative & support | 2024 |
| Board Conversations Limited | Professional & scientific | 2018 |
| Boardcraft (Holdings) Limited | Administrative & support | 2018 |
| Boardline Advisory Ltd | Administrative & support | 2025 |
| Boardman Aviation Services Limited | Professional & scientific | 2016 |
| Boardroom Knowledge Limited | Other services | 2016 |
| Boards and Swords Hobbies Limited | Wholesale & retail | 2017 |
| Boaz Real Estate Limited | Professional & scientific | 2016 |
| Boaz Renovations Ltd | Construction | 2026 |
| BOB International Holding Limited | Administrative & support | 2015 |
| BOB Shop 10 Ltd | Wholesale & retail | 2023 |
| BOB Shop 2 Ltd | Wholesale & retail | 2022 |
| BOB Shop 24/7 Ltd | Wholesale & retail | 2022 |
| BOB Shop 25 Limited | Wholesale & retail | 2024 |
| BOB Shop 3 Ltd | Wholesale & retail | 2022 |
| BOB Shop 300 Ltd | Wholesale & retail | 2025 |
| BOB Shop 4D Ltd | Wholesale & retail | 2026 |
| BOB Shop 6 Ltd | Wholesale & retail | 2022 |
| BOB Shop 9 Ltd | Wholesale & retail | 2023 |
| BOB Shop A1 Ltd | Wholesale & retail | 2025 |
| BOB Shop A12 Ltd | Wholesale & retail | 2025 |
| BOB Shop A5 Ltd | Wholesale & retail | 2025 |
| BOB Shop B6 Ltd | Wholesale & retail | 2026 |
| BOB Shop Franchise Ltd | Real estate | 2025 |
| BOB Wilson & Sons (Leisure) Limited | Professional & scientific | 1992 |
| BOB Wilson & Sons Limited | Arts & recreation | 1971 |
| BOB Wilson Funfairs Limited | Arts & recreation | 1978 |
| Bob's & BAL Hardware Ltd | Wholesale & retail | 2021 |
| Bob's Fried Chicken and Pizza Limited | Hospitality | 2012 |
| Bob's FRY Inn Place Ltd | Hospitality | 2020 |
| Bob's Fryer Ltd | Hospitality | 2025 |
| Boba & Chai Ltd | Hospitality | 2023 |
| Boba 8UJ Limited | Administrative & support | 2022 |
| Boba Bliss Bubble Tea Ltd | Hospitality | 2025 |
| Boba Bliss Private Limited | Hospitality | 2025 |
| Boba Gumbo Limited | Wholesale & retail | 2026 |
| Bobbi Trans Limited | Transport & logistics | 2015 |
| Bobby 990 Properties Ltd | Real estate | 2021 |
| Bobby KOA Removals Ltd | Transport & logistics | 2023 |
| Bobby Limited | Wholesale & retail | 2022 |
| Bobby Sarver Music Limited | Information & communication | 2025 |
| Bobby's Bazaar Limited | Wholesale & retail | 2026 |
| Bobby's Punjabi Food Corner Hamstead Ltd | Hospitality | 2026 |
| Bobby's Punjabi Food Corner Ltd | Hospitality | 2020 |
| Bobbybrown Inc Limited | Health & social care | 2019 |
| Bobbywheels Ltd | Transport & logistics | 2019 |
| Bobo Education Limited | Education | 2021 |
| Bobo Hub Ltd | Wholesale & retail | 2025 |
| Bobrick Washroom Equipment Ltd. | Wholesale & retail | 1993 |
| BOBSHOP03A Limited | Wholesale & retail | 2025 |
| Bocadios Express Limited | Hospitality | 2026 |
| Bocadios Limited | Hospitality | 2025 |
| Boce Consultancy Ltd | Information & communication | 2025 |
| Bocote Ltd | Real estate | 2016 |
| Bodamax Property Management Limited | Real estate | 2025 |
| Bodard Digital Ltd | Professional & scientific | 2019 |
| Boddington Capital Ltd | Wholesale & retail | 2019 |
| Boden Acquisitions Ltd | Real estate | 2017 |
| Boden Consultancy Ltd | Administrative & support | 2019 |
| Boden Group Investments Ltd | Real estate | 2021 |
| Boden Piper Limited | Professional & scientific | 2010 |
| Boden Resource Limited | Administrative & support | 2012 |
| Boden Resource Property Ltd | Administrative & support | 2018 |
| Bodfari (Quarries) Limited | Extraterritorial | 1986 |
| Bodies of Angels (BOA) Limited | Manufacturing | 2024 |
| Bodorgan Homes Grounds Management Company Limited | Households | 2025 |
| Body 1ST Nutrition Ltd | Wholesale & retail | 2011 |
| Body Clinics UK Limited | Education | 2003 |
| Body Colour Limited | Other services | 2025 |
| Body Contouring Clinics Ltd | Other services | 2023 |
| Body Enhancing Ltd | Other services | 2024 |
| Body Mend Theraphy Ltd | Health & social care | 2024 |
| Body Mend Therapy Ltd | Health & social care | 2024 |
| Body Phaze Limited | Other services | 2015 |
| Body Sharp Futures C.I.C. | Health & social care | 2012 |
| Body Sharp Limited | Arts & recreation | 2008 |
| Body Symphony CIC | Arts & recreation | 2015 |
| Body That Body Ltd | Education | 2025 |
| Bodycote Properties Limited | Real estate | 2001 |
| Bodyfuel Limited | Wholesale & retail | 2026 |
| Bodyprep Ltd | Health & social care | 2019 |
| Bodyshop Group Holdings (UK) Limited | Extraterritorial | 2009 |
| Bodytone Fitness Ltd | Arts & recreation | 2022 |
| Bodyzone Fitness Ladies Only Gym Ltd | Arts & recreation | 2014 |
| Bofa Inspire CIC | Health & social care | 2013 |
| Bogan Metalworks Ltd | Construction | 2021 |
| Bogdan BCF Ltd | Transport & logistics | 2017 |
| Bogdan Cristian Popescu Limited | Transport & logistics | 2025 |
| Bogdan Law Office Ltd | Professional & scientific | 2015 |
| Bogdan&Patrick Ltd | Administrative & support | 2018 |
| Bogdanscorac Ltd | Construction | 2026 |
| Bogdantrams Limited | Transport & logistics | 2025 |
| Bogdybogdytransport Ltd | Transport & logistics | 2022 |
| Boggins Properties Limited | Real estate | 2015 |
| Bogusiatqm Limited | Education | 2006 |
| Bohach Construction Ltd | Construction | 2024 |