| Bike Craft Ltd | Wholesale & retail | 2018 |
| Bike Fit Worldwide Ltd | Wholesale & retail | 2019 |
| Bike Park Leith CIC | Administrative & support | 2019 |
| Bike Valley Scotland Ltd | Administrative & support | 2018 |
| Bikeminder Limited | Information & communication | 2025 |
| Bikerbnb Limited | Wholesale & retail | 2016 |
| Bilal Ahmad Consultancy Limited | Professional & scientific | 2025 |
| Bilancio Ltd | Information & communication | 2022 |
| Bilander LP | | 2022 |
| Bilayer Limited | Wholesale & retail | 2026 |
| Bileetone Trading LP | | 2012 |
| Bilen Software Ltd | Wholesale & retail | 2023 |
| Biles Scottish Limited Partnership | | 2005 |
| Bilingualism Matters | Professional & scientific | 2021 |
| Bilip Productions LP | | 2015 |
| Bill Baber York LLP | | 2010 |
| Bill Davidson Associates Limited | Professional & scientific | 2011 |
| Bill HAY Network Ltd. | Professional & scientific | 1999 |
| Bill Hutchinson Limited | Transport & logistics | 1983 |
| Bill Shaw Limited | Professional & scientific | 2012 |
| Billbob Consulting Ltd | Real estate | 2020 |
| Billeridge Enterprises & Associates | | 1991 |
| Billing Specialists (Edinburgh) Limited | Information & communication | 2022 |
| Billinghurst Limited | Wholesale & retail | 2014 |
| Billington FOX LP | | 2014 |
| Billion Intelligent LP | | 2015 |
| Billion Quest LP | | 2017 |
| Billmars LP | | 2016 |
| Billund LP | | 2011 |
| Biloba Digital LP | | 2020 |
| Bilston Glen Estates Limited | Extraterritorial | 2010 |
| Bilston LP | | 2016 |
| Bilton Group L.P. | | 2009 |
| Biman Logistics Limited | Transport & logistics | 2023 |
| Bimar Business Group LP | | 2015 |
| Bimpact Consulting Ltd | Professional & scientific | 2023 |
| BIN There Dump That Glasgow Limited | Water & waste | 2022 |
| Binanti Lordi Property Limited | Hospitality | 2015 |
| Binard LP | | 2014 |
| Binary LP | | 2004 |
| Binary Pulsar Consultants Limited | Professional & scientific | 2024 |
| Binatna Ltd | Administrative & support | 2025 |
| Binchester Trading LP | | 2014 |
| Bindu Learning LP | | 2023 |
| Bine Corporation LP | | 2020 |
| Binezis LP | | 2022 |
| Bing Design Ltd | Construction | 2009 |
| Bingara Trading LP | | 2016 |
| Binger Flast Ltd | Real estate | 2024 |
| Binley Trading LP | | 2013 |
| Binn Agricultural Limited | Agriculture & fishing | 2015 |
| Binn Eco Park Limited | Professional & scientific | 2009 |
| Binn Environmental Limited | Water & waste | 2014 |
| Binn Farm Limited | Agriculture & fishing | 1981 |
| Binn Group (Inverness) Limited | Water & waste | 2025 |
| Binn Group Holdings Limited | Professional & scientific | 2014 |
| Binn Group Limited | Administrative & support | 2001 |
| Binn Landfill (Glenfarg) Limited | Water & waste | 1991 |
| Binn Organics Limited | Administrative & support | 2010 |
| Binn Recycling | Administrative & support | 2006 |
| Binn Renewable Energy Limited | Water & waste | 2010 |
| Binn Skips Limited | Water & waste | 2014 |
| Binn Waste Management Limited | Administrative & support | 2008 |
| Binney and Co Limited | Real estate | 2022 |
| Binnie Properties UK Ltd | Real estate | 2019 |
| Binomity Trade LP | | 2014 |
| Binomlab LP | | 2017 |
| Binorte Alliance LP | | 2019 |
| Binova Ltd | Wholesale & retail | 2026 |
| Binton Consult LP | | 2014 |
| BIO Commodities LP | | 2015 |
| BIO Management Group LP | | 2016 |
| Bioand Biotech Services Limited | Professional & scientific | 2008 |
| Bioascent Discovery Limited | Professional & scientific | 2013 |
| Biobest Laboratories Limited | Administrative & support | 1999 |
| Bioblend Packaging Limited | Wholesale & retail | 2024 |
| Biocaptiva Limited | Professional & scientific | 2018 |
| Biochem Industries L.P. | | 2009 |
| Biochem Trading & Co | | 1994 |
| Biocold Limited | Manufacturing | 2006 |
| Biocursus LP | | 2024 |
| Bioguardian Robotics Limited | Information & communication | 2025 |
| Bioliberty Ltd | Professional & scientific | 2020 |
| Biolida LP | | 2017 |
| Biolio Group LP | | 2016 |
| Biological Consulting Europe Limited | Professional & scientific | 2009 |
| Biomara Limited | Professional & scientific | 2022 |
| Biomedis Global Trade LP | | 2017 |
| Biometric LAB LP | | 2016 |
| Biomorphis Limited | Professional & scientific | 2011 |
| Bion & Ekzo LP | | 2014 |
| Bionom Steel LP | | 2018 |
| Bionura Trade LP | | 2013 |
| Biopath Investments LP | | 2016 |
| Bioprocess Advisory Scotland LLP | | 2026 |
| Bioron Impex LP | | 2015 |
| Biospheric Restoration Systems C.I.C. | Other services | 2023 |
| Biostar Pro Corporation LP | | 2017 |
| Biotrans Pole Sleeves UK Ltd | Manufacturing | 2020 |
| Biovec Ltd | Manufacturing | 2023 |