| Bourne Construction Limited | Construction | 1981 |
| Bourne Design and Build Limited | Construction | 2006 |
| Bourne Endeavours Limited | Administrative & support | 2022 |
| Bourne Engineering Limited | Construction | 2005 |
| Bourne Gate Packaging Ltd | Extraterritorial | 2004 |
| Bourne Lets Ltd | Real estate | 2024 |
| Bourne London Limited | Construction | 2005 |
| Bourne Media Group Ltd | Professional & scientific | 2021 |
| Bourne Nuclear Ltd | Manufacturing | 2017 |
| Bourne Space (Dorset) Limited | Hospitality | 2023 |
| Bourne Transport Services Limited | Manufacturing | 2005 |
| Bourne Valley Developments Ltd | Construction | 2010 |
| Bourne Valley Property Maintenance Ltd | Construction | 2010 |
| Bournehellas Ltd | Manufacturing | 2026 |
| Bournemouth & Poole Estates Limited | Construction | 2001 |
| Bournemouth and District Society of Model Engineers | Arts & recreation | 1997 |
| Bournemouth and Poole Car Repairs Limited | Wholesale & retail | 2018 |
| Bournemouth Assistance Limited | Other services | 2012 |
| Bournemouth Auto Locksmith Limited | Wholesale & retail | 2026 |
| Bournemouth Chamber of Trade and Commerce Limited | Administrative & support | 2012 |
| Bournemouth Cleaning Services Ltd | Administrative & support | 2017 |
| Bournemouth Construction Contractors Ltd | Construction | 2025 |
| Bournemouth Courier & Logistics Limited | Transport & logistics | 2015 |
| Bournemouth Distillers Limited | Manufacturing | 2018 |
| Bournemouth Eats Ltd | Hospitality | 2024 |
| Bournemouth Energy Limited | Real estate | 2013 |
| Bournemouth English Book Centre Limited(The) | Wholesale & retail | 1974 |
| Bournemouth Flooring Ltd | Construction | 2021 |
| Bournemouth Futsal Club Ltd | Education | 2018 |
| Bournemouth Garage Doors Limited | Construction | 2006 |
| Bournemouth Glass Company Limited | Construction | 2009 |
| Bournemouth High Performance Ltd | Wholesale & retail | 2013 |
| Bournemouth Holiday Homes Ltd | Real estate | 2023 |
| Bournemouth Independent Group Limited | Professional & scientific | 2010 |
| Bournemouth Judo Club Ltd | Arts & recreation | 2025 |
| Bournemouth Music School Ltd | Education | 2025 |
| Bournemouth PMS Ltd | Construction | 2014 |
| Bournemouth Project Developments Ltd | Construction | 2022 |
| Bournemouth Promotions Limited | Arts & recreation | 2026 |
| Bournemouth Properties Limited | Real estate | 2003 |
| Bournemouth Rapid Recovery and Repairs Ltd | Wholesale & retail | 2026 |
| Bournemouth Rugby Club Holdings Ltd | Arts & recreation | 2024 |
| Bournemouth TPS Limited | Wholesale & retail | 2007 |
| Bournemouth White Lining Ltd. | Construction | 1997 |
| Bournemouth-Poole Orthodox Christian Foundation | Education | 2010 |
| Bournemouthwasteclearance Ltd | Water & waste | 2026 |
| Bourneside Manor Flats Management Company Limited | Households | 1992 |
| Bournesouth Ltd | Construction | 2016 |
| Bournestar Limited | Arts & recreation | 2015 |
| Bournhomes Limited | Real estate | 2014 |
| Bourntex Limited | Construction | 2004 |
| BOW WMI Ltd | Information & communication | 2020 |
| Bowel Control UK Ltd | Health & social care | 2024 |
| Bower Enterprises Limited | Manufacturing | 2022 |
| Bowley Hathaway Limited | Real estate | 2012 |
| Bowlr Ltd | Professional & scientific | 2020 |
| Bowmill Engineering Limited | Manufacturing | 1970 |
| Bowmill Limited | Extraterritorial | 2013 |
| Bowmill Metal Treatments Limited | Manufacturing | 2004 |
| Bown Holdings Limited | Financial services | 2015 |
| Box Art Interiors Limited | Wholesale & retail | 2021 |
| Box Box Box Limited | Manufacturing | 2023 |
| Box Galleries Ltd | Wholesale & retail | 2012 |
| Boxylicious Limited | Wholesale & retail | 2020 |
| Boyland and SON Limited | Professional & scientific | 1961 |
| BP Carwash Ltd | Wholesale & retail | 2025 |
| BPD (Madeira) Ltd | Construction | 2025 |
| BPD (West Moors) Ltd | Construction | 2025 |
| Bppm Consulting Limited | Extraterritorial | 2018 |
| Bprct Limited | Other services | 2022 |
| BPS Builders Limited | Construction | 2006 |
| BPS Entertainment LLP | | 2024 |
| Bqcg Ltd | Wholesale & retail | 2024 |
| BR Cloud Consulting Ltd | Information & communication | 2026 |
| BR Sushi Ltd | Wholesale & retail | 2023 |
| Brabingers Limited | Construction | 2002 |
| Braceletable Ltd | Wholesale & retail | 2021 |
| Bracken Developments (Dorset) Limited | Real estate | 1999 |
| Bracken Developments Limited | Construction | 1979 |
| Bracken Group Holdings Limited | Financial services | 2021 |
| Brackendale Estates II Ltd | Professional & scientific | 2014 |
| Bradburne Four Management Limited | Households | 2000 |
| Bradbury Global Resources Limited | Wholesale & retail | 2025 |
| Bradley Cheer Limited | Professional & scientific | 2008 |
| Bradley Hamshaw Limited | Professional & scientific | 2017 |
| Bradypus Agency Ltd | Wholesale & retail | 2022 |
| Braeside Developments (Poole) Limited | Real estate | 2007 |
| Braidley Freehold Limited | Households | 2000 |
| Brain Rack Tech Ltd | Information & communication | 2026 |
| Brainmod Limited | Manufacturing | 2024 |
| Brakeburn Limited | Extraterritorial | 2014 |
| Brakkn Ltd | Professional & scientific | 2017 |
| Bramble Beach Property Ltd | Real estate | 2023 |
| Brambles Bungalows Management Company Limited | Households | 2003 |
| Brambles Care Holdings Limited | Financial services | 2022 |
| Brameld Limited | Professional & scientific | 2026 |
| Bramheath Limited | Real estate | 2000 |
| Bramley Flat Management (Poole) Limited | Households | 1976 |
| Bran Logistics Ltd | Transport & logistics | 2022 |
| Brand Incrementum Limited | Professional & scientific | 2016 |