| JM & SR Property (South West) Ltd | Real estate | 2021 |
| JM Building Services South West Limited | Construction | 2025 |
| JM Dean Transport Ltd | Transport & logistics | 2017 |
| JM Elec Ltd | Manufacturing | 2025 |
| JM ETP Ltd | Wholesale & retail | 2022 |
| JM Finishers Ltd | Construction | 2020 |
| JM Handling Limited | Wholesale & retail | 2016 |
| JM Modern Ltd | Real estate | 2025 |
| JM Purpose Consulting Ltd | Professional & scientific | 2026 |
| JM Rentals Ltd | Hospitality | 2023 |
| JM South West Limited | Other services | 2017 |
| JM Sports Education Ltd | Education | 2019 |
| JM Valor Limited | Wholesale & retail | 2025 |
| JMA Executive Travel Ltd | Transport & logistics | 2022 |
| JMA Productions Ltd | Arts & recreation | 2012 |
| JMA Revivals Ltd | Construction | 2024 |
| JMB Gardening Services Ltd | Administrative & support | 2025 |
| JMB Modtech Ltd | Manufacturing | 2025 |
| JMB Retail (South West) Limited | Wholesale & retail | 2013 |
| Jmbouzas Ltd | Transport & logistics | 2023 |
| JMC Commissioning Limited | Administrative & support | 2005 |
| JMC Hockey Limited | Education | 2022 |
| JMC Legal Recruitment Limited | Administrative & support | 2016 |
| JMD Bristol Limited | Wholesale & retail | 2021 |
| JMD Bristol Properties Limited | Real estate | 2023 |
| JMD Electrical South West Ltd | Construction | 2019 |
| JMD Property Services Ltd | Construction | 2020 |
| JME Building Ltd | Construction | 2026 |
| JMF Bricklaying Contractors Ltd | Construction | 2020 |
| Jmfe Transport Ltd | Other services | 2025 |
| Jmgh Services LLP | | 2024 |
| Jmgl Limited | Professional & scientific | 2026 |
| JMH Professional Services Limited | Professional & scientific | 2025 |
| Jmholdings Livestock Ltd | Extraterritorial | 2019 |
| JMJ Enterprises Limited | Wholesale & retail | 2014 |
| JMJ Nest Ltd | Real estate | 2025 |
| JML Motors Ltd | Wholesale & retail | 2024 |
| JML Software Solutions Limited | Information & communication | 2003 |
| JML Technology Ltd | Information & communication | 2015 |
| JMM Property Developments Limited | Health & social care | 2024 |
| Jmol Ltd | Construction | 2025 |
| JMP Building Services Ltd | Construction | 2024 |
| JMP Construction (Bristol) Ltd | Construction | 2015 |
| JMP Exterior Services Ltd | Administrative & support | 2025 |
| JMP Systems Engineering Limited | Professional & scientific | 2011 |
| JMR Antiques Ltd | Wholesale & retail | 2018 |
| JMR Transport UK Limited | Transport & logistics | 2019 |
| Jmro Consulting Ltd | Information & communication | 2016 |
| Jmrowland Properties and Cleaning Ltd | Real estate | 2023 |
| JMS AV Ltd | Wholesale & retail | 2015 |
| JMS Property Consultancy Ltd | Real estate | 2018 |
| JMT Product Collections Ltd | Other services | 2014 |
| Jmtradez Ltd | Administrative & support | 2024 |
| JMW Bristol Ltd | Construction | 2023 |
| JMW Carpentry Services Ltd | Construction | 2015 |
| JMW Contracts Ltd | Construction | 2024 |
| Jmwarracks Ltd. | Manufacturing | 2013 |
| JMZ Couriers Ltd | Transport & logistics | 2024 |
| JN & Co Gym Space Limited | Arts & recreation | 2025 |
| JN Bets Ltd | Arts & recreation | 2026 |
| JN Electrical Service Limited | Construction | 2014 |
| JN Scaffolding Ltd | Construction | 2026 |
| JND Building Solutions Ltd | Construction | 2025 |
| JND Carpentry Limited | Manufacturing | 2011 |
| JND Generations Holdings Limited | Financial services | 2025 |
| JND Generations Properties Limited | Financial services | 2025 |
| Jnks Property Limited | Real estate | 2019 |
| JNO Engineering Ltd | Information & communication | 2018 |
| Jnpt Memberships Limited | Arts & recreation | 2025 |
| JNY 1298 Ltd | Hospitality | 2025 |
| JO Bannon Productions Ltd | Arts & recreation | 2025 |
| JO Enterprises Limited | Real estate | 2017 |
| JO Hand Car Wash Ltd | Other services | 2023 |
| JO Hombal Consulting Services Ltd | Professional & scientific | 2023 |
| JO Maggs Consultancy Ltd | Professional & scientific | 2024 |
| JO Martin Law Limited | Professional & scientific | 2025 |
| JO Sarsby Personal Management Limited | Professional & scientific | 2004 |
| JO Textiles Ltd | Wholesale & retail | 2026 |
| JO Tovey Associate Limited | Other services | 2003 |
| Jo's Cervical Cancer Trust | Health & social care | 2009 |
| Jo's Kitchen Ltd | Hospitality | 2015 |
| Jo's Tea Ltd | Hospitality | 2022 |
| Joanae Limited | Professional & scientific | 2024 |
| Joanna Pearce Ltd | Arts & recreation | 2018 |
| Joanna Solazzo Limited | Health & social care | 2018 |
| Joanna's Free Range Kitchen Ltd | Hospitality | 2021 |
| Joannidi Limited | Real estate | 2013 |
| JOB Done Services Ltd | Construction | 2018 |
| Jobellotic Management Company Limited | Households | 2014 |
| Jobnetworkbristol Community Interest Company | Information & communication | 2020 |
| Jobsmobile Ltd | Administrative & support | 2011 |
| Jochai Investment Group Ltd | Financial services | 2025 |
| Jochman Andrews Design Environment UK Limited | Extraterritorial | 2018 |
| Jochman Architecture Design Environment (UK) Ltd | Extraterritorial | 2017 |
| Jocko Ltd | Wholesale & retail | 2025 |
| JOD (Westbury) Ltd | Extraterritorial | 2025 |
| JOD Corporate Solutions Ltd | Information & communication | 2024 |
| Jodha Developments Ltd | Construction | 2025 |
| Jodie Brett Performance Ltd | Extraterritorial | 2020 |
| JOE Constant Coach Ltd | Real estate | 2017 |