| Bella&Fella Ltd | Other services | 2017 |
| Belle & Beau Ltd | Wholesale & retail | 2018 |
| Bellissimo Style Lounge Ltd | Other services | 2021 |
| Bello Luca Ltd | Hospitality | 2024 |
| Bellus Lingerie Ltd | Wholesale & retail | 2025 |
| Bemersyde Guest House Ltd | Hospitality | 2020 |
| BEN & Glen Ltd | Hospitality | 2025 |
| BEN Glen Ltd | Real estate | 2021 |
| Benefits Advisory Services Ltd | Financial services | 2015 |
| Bennett Pipelines Ltd | Professional & scientific | 2019 |
| Bennett's Drycleaning & Alterations Limited | Other services | 2010 |
| Bentley's Grill Ltd | Hospitality | 2018 |
| Bernard Tsuro Limited | Transport & logistics | 2026 |
| Bespoke Apparel & Textile Limited | Wholesale & retail | 2022 |
| Bespoke Scaffolding Ltd | Construction | 2018 |
| Bespoke Tiling & Bathrooms Ltd | Construction | 2025 |
| Bespoke Touches Ltd | Hospitality | 2018 |
| Best 1 Lettings Ltd | Real estate | 2020 |
| Best Business Sales Ltd | Professional & scientific | 2016 |
| Best Cleaning in GL Ltd | Administrative & support | 2025 |
| Betjack Limited | Extraterritorial | 2008 |
| Beyond Lettings Ltd | Real estate | 2026 |
| BG Taylor Ltd | Professional & scientific | 2023 |
| BH Retail Supplies Ltd. | Wholesale & retail | 2015 |
| BH28 Ltd | Hospitality | 2026 |
| Bibichu Investments Ltd | Real estate | 2026 |
| Bica & Nata Ltd | Hospitality | 2026 |
| Bicedin Ltd | Professional & scientific | 2011 |
| Bickett Hospitality Ltd. | Hospitality | 2017 |
| Big Banana Feet Ltd | Hospitality | 2019 |
| Big Kids Little Learners Ltd | Education | 2025 |
| Big Services International Limited | Wholesale & retail | 2025 |
| Bigger Thinking Ltd | Wholesale & retail | 2026 |
| Bilga Takeaway Limited | Hospitality | 2026 |
| Bilo Takeaway Ltd | Hospitality | 2024 |
| Biomedical Solutions Limited | Administrative & support | 2001 |
| Biorem Services Ltd | Water & waste | 2020 |
| Bipolar Scotland | Health & social care | 1996 |
| BJD BLD Ltd | Professional & scientific | 2023 |
| BJW Social Work Consultancy Ltd. | Health & social care | 2024 |
| BK Renewables Ltd | Construction | 2024 |
| BL Commercial Services Ltd | Wholesale & retail | 2022 |
| Blackstone Farms Ltd. | Agriculture & fishing | 1996 |
| Blakes Pubs Enterprise Limited | Hospitality | 2025 |
| Blaven Fishing Company Limited | Agriculture & fishing | 2009 |
| Blend (Paisley) Limited | Hospitality | 2014 |
| Blether Street Ltd | Arts & recreation | 2025 |
| Bleucoop Limited | Hospitality | 2023 |
| BLL Properties Ltd | Real estate | 2024 |
| Blondie Brownie Holdings Ltd | Financial services | 2021 |
| Bloom Fitness Studio Ltd | Arts & recreation | 2025 |
| Blooming Events Ltd | Hospitality | 2024 |
| Bloomminders Ltd | Education | 2026 |
| Blossom Lane Boutique Ltd | Wholesale & retail | 2026 |
| Blue Forest Property Ltd | Real estate | 2023 |
| Blue Horizon Adventures Limited | Administrative & support | 2021 |
| Blue Horizon Diving Limited | Administrative & support | 2019 |
| Blue Lock Technologies Limited | Information & communication | 2024 |
| Blue-Dot Design Ltd | Professional & scientific | 2017 |
| Bluebirds Holdings Limited | Hospitality | 2017 |
| Bluethorough Ltd | Construction | 2019 |
| BMG Unlimited Ltd | Construction | 2021 |
| BMI Builders Ltd | Construction | 2025 |
| BMS Electrical Installations Ltd | Construction | 2011 |
| Boba Livingston Ltd | Hospitality | 2026 |
| Body Bronzing Ltd. | Wholesale & retail | 1999 |
| Boiler & System Services Ltd | Construction | 2022 |
| Bold CUT Records Ltd | Information & communication | 2019 |
| Bombay Deli Ltd | Hospitality | 2023 |
| Bond Hairdressing Academy Ltd | Other services | 2022 |
| Bonsai Fitness Ltd | Wholesale & retail | 2018 |
| Bookafrica Ltd | Administrative & support | 2025 |
| Bookscotland Ltd | Administrative & support | 2019 |
| Boomtime Property Ltd | Real estate | 2022 |
| Bothy Coffee Ltd | Wholesale & retail | 2017 |
| Bottom Drawer Ltd | Wholesale & retail | 2019 |
| Bpgl Services Ltd | Construction | 2025 |
| BPI General Partner Limited | Extraterritorial | 2010 |
| BPI Limited Partner Limited | Manufacturing | 2010 |
| BPI Pension Funding Limited Partnership | | 2011 |
| BPU25 Ltd | Hospitality | 2023 |
| Braemar Security & FM Solutions Ltd | Administrative & support | 2026 |
| Branchal Farms 1999 | | 2000 |
| Brandon Health and Safety Ltd | Professional & scientific | 2021 |
| Brasses Ltd | Financial services | 2025 |
| Braveheart Deck Ltd | Other services | 2026 |
| Brediland OUT of School Club Ltd | Health & social care | 2007 |
| Brian Docherty Fitters (Erskine) Limited | Construction | 2016 |
| Brick Lane Music Academy CIC | Education | 2020 |
| Bridge 25 Ltd | Hospitality | 2025 |
| Bright & Clean Services Ltd | Administrative & support | 2024 |
| Bright Star Cleaning Ltd | Administrative & support | 2025 |
| Brightside Blinds (UK) Limited | Manufacturing | 2019 |
| Brightside Electrical Services Ltd | Construction | 2022 |
| Brim Comfort Store Ltd | Wholesale & retail | 2025 |
| Brina Limited | Real estate | 2025 |
| Brindley Built Ltd | Manufacturing | 2025 |
| Brit-Bangla Xpress Limited | Real estate | 2023 |
| Broadley Consulting Limited | Professional & scientific | 2011 |
| Broadway School of Performing Arts Ltd | Arts & recreation | 2023 |