| Jays Cleaning and Maintenance Limited | Hospitality | 2016 |
| Jazz Coffee & Bar Ltd | Hospitality | 2026 |
| JB Aerospace Ltd | Professional & scientific | 2025 |
| JB Design & Manufacturing Limited | Professional & scientific | 2024 |
| JB Frost & Co Ltd | Financial services | 2024 |
| JB Installation Services Limited | Construction | 2017 |
| JB Service Solutions Ltd | Other services | 2017 |
| JBH Properties Limited | Construction | 2018 |
| JBS Law Limited | Professional & scientific | 2009 |
| JBS Solicitors Limited | Professional & scientific | 2009 |
| JBT Care Ltd | Health & social care | 2017 |
| JBT Electrical Services Ltd | Construction | 2025 |
| JBT Marine Ltd | Wholesale & retail | 1999 |
| JCB M.C.R. Limited | Information & communication | 2014 |
| JCC Executive Limited | Professional & scientific | 2008 |
| JCH Xpress Ltd | Transport & logistics | 2023 |
| JCL Building & Maintenance Contractors Limited | Construction | 2017 |
| JCP Heating Limited | Construction | 2018 |
| JCU Cleaning Ltd | Administrative & support | 2026 |
| JD Airport Transfer Ltd | Transport & logistics | 2020 |
| JD Avon Consulting Limited | Professional & scientific | 2022 |
| JD Drainage Solutions Ltd | Construction | 2018 |
| JD Electrical Bournemouth Ltd | Construction | 2015 |
| JD Kras Ltd | Real estate | 2019 |
| JD Motorlink Ltd | Wholesale & retail | 2024 |
| JDC Medical Limited | Health & social care | 2018 |
| JDH Heating & Cooling Ltd | Construction | 2026 |
| JDM Block Management Ltd | Real estate | 2023 |
| JDM Freeholds Limited | Construction | 2017 |
| JDM Homes Development Company Ltd | Households | 2022 |
| JDM Homes Limited | Real estate | 2011 |
| JDO Construction Ltd | Construction | 2015 |
| JDP International Limited | Real estate | 2022 |
| Jdtc Limited | Real estate | 2015 |
| Jdtcgcollectables Limited | Wholesale & retail | 2026 |
| JE Reck Company Ltd | Wholesale & retail | 2019 |
| Jean Rocco Fashion Ltd | Wholesale & retail | 2025 |
| Jears Properties Limited | Real estate | 2005 |
| JEE FOO Takeaway Ltd | Hospitality | 2025 |
| Jeem Properties Ltd | Real estate | 2021 |
| Jellesen Holdings Limited | Wholesale & retail | 2018 |
| Jellyrock PR and Marketing Limited | Professional & scientific | 2013 |
| JEM Fabrics Limited | Wholesale & retail | 2004 |
| JEM Holiday LET Ltd | Real estate | 2022 |
| Jems Property Developments Ltd | Real estate | 2026 |
| Jemstone Property Solutions Ltd | Real estate | 2020 |
| Jenkins Brickwork Ltd | Construction | 2023 |
| Jennassets Ltd | Real estate | 2021 |
| Jennel Properties Limited | Real estate | 2024 |
| Jenny Blanc Group Ltd | Wholesale & retail | 2021 |
| Jenny Tipping Ltd | Professional & scientific | 2017 |
| Jenry Limited | Wholesale & retail | 2007 |
| Jensen Consultancy & Construction Limited | Extraterritorial | 2016 |
| Jenstar North Ltd | Other services | 2022 |
| Jeremy Bournemouth Limited | Real estate | 2020 |
| Jericho Ltd | Professional & scientific | 2017 |
| Jerk HUT & Co Bournemouth Ltd | Hospitality | 2020 |
| Jerk HUT & Co Tropical Vibes Ltd | Hospitality | 2025 |
| Jerrys T/A Ltd | Hospitality | 2015 |
| Jesbrow Foundation | Health & social care | 2014 |
| Jessamine Court Ltd | Real estate | 2007 |
| Jester Entertainments Limited | Arts & recreation | 2001 |
| Jesus Christ Ltd | Professional & scientific | 2005 |
| Jesus Christ Ministries Limited | Professional & scientific | 2006 |
| JET Telecom Ltd | Information & communication | 2007 |
| Jetgold Consultancy Limited | Information & communication | 2010 |
| Jethaven Travel Limited | Administrative & support | 2025 |
| Jewel Intentions Ltd | Administrative & support | 2020 |
| Jewel Vintage Ltd | Wholesale & retail | 2010 |
| Jeweltown Limited | Professional & scientific | 2000 |
| Jezelec Limited | Construction | 2016 |
| JFD (Bournemouth) Limited | Administrative & support | 2005 |
| JGH Construction (Bournemouth) Limited | Construction | 1997 |
| JH Auto Tech Ltd | Wholesale & retail | 2025 |
| JH Carpentry & Construction Ltd | Construction | 2016 |
| Jhestrades Limited | Financial services | 2024 |
| JHL Coastal Property Investment Ltd | Real estate | 2017 |
| Jiamei Catering Ltd | Hospitality | 2019 |
| Jigsaw Financial Planning Limited | Financial services | 2015 |
| Jigsaw Interior Design Limited | Professional & scientific | 2012 |
| JIM R Walker Limited | Professional & scientific | 2002 |
| Jimmy's Group Ltd | Hospitality | 2025 |
| Jimmy's House Bar & Kitchen Ltd | Hospitality | 2025 |
| Jirehs Grace Ltd | Information & communication | 2022 |
| JJ Infotech Limited | Information & communication | 2009 |
| JJ Labs Limited | Information & communication | 2018 |
| JJ Works Ltd | Transport & logistics | 2025 |
| Jj's Snack Shack Ltd | Hospitality | 2022 |
| Jjas Property Limited | Real estate | 2024 |
| Jjbt Ltd | Real estate | 2018 |
| Jjcooke Contracting Services Limited | Construction | 2016 |
| Jjen Coatings Ltd | Construction | 2014 |
| JJL Venture Limited | Real estate | 2019 |
| JJN Southampton Limited | Wholesale & retail | 2022 |
| Jjnm Ltd | Information & communication | 2019 |
| JK Hospitality Limited | Hospitality | 2026 |
| JK Technology Limited | Information & communication | 2025 |
| Jktc Limited | Transport & logistics | 2025 |
| JL Acquisition Ltd | Wholesale & retail | 2025 |
| JL Ideas Ltd | Administrative & support | 2018 |