| Joseph IT Solutions Ltd | Information & communication | 2024 |
| Joseph’S Electrical Services Ltd | Construction | 2023 |
| Josh Hodkinson Limited | Manufacturing | 2017 |
| Josh Mclean Racing Limited | Arts & recreation | 2025 |
| Josh Spinks Racing Limited | Education | 2023 |
| Joshuaorengineering Ltd | Manufacturing | 2019 |
| Jossyma Limited | Health & social care | 2020 |
| JOU JOU @ Friargate Limited | Other services | 2011 |
| Jouhal Transport Ltd | Transport & logistics | 2019 |
| JOX Ltd | Construction | 2025 |
| Joy and Bella Limited | Wholesale & retail | 2023 |
| Joy Boutique Fitness Limited | Arts & recreation | 2020 |
| Joy Shepherd Childcare Ltd | Health & social care | 2021 |
| Joys Mini Market Limited | Wholesale & retail | 2006 |
| Joytun Bari Limited | Hospitality | 2017 |
| Jozef Wawrzyniak Ltd | Transport & logistics | 2016 |
| JP Concrete Products Limited | Manufacturing | 2007 |
| JP Fractional Marketing Ltd | Professional & scientific | 2026 |
| JP Housing Ltd | Real estate | 2021 |
| JP Jones Consulting (UK) Ltd | Professional & scientific | 2024 |
| JP Pavlak Property Ltd | Real estate | 2018 |
| JP Style Academy Limited | Education | 2019 |
| JP3 Ltd | Real estate | 2024 |
| JP5 Ltd | Professional & scientific | 2023 |
| JPD Double Glazing INT Ltd | Construction | 2025 |
| JPD London Ltd | Wholesale & retail | 2011 |
| Jpep Limited | Financial services | 2025 |
| Jpex Healthcare Limited | Health & social care | 2021 |
| Jpjp Consulting Ltd | Professional & scientific | 2024 |
| JPL Rentals Limited | Real estate | 2025 |
| JPM Equities UK Ltd | Wholesale & retail | 2025 |
| Jpm&M Ltd | Construction | 2023 |
| Jpnewton Ltd | Information & communication | 2016 |
| JPP JV Ltd | Administrative & support | 2025 |
| Jprb Holdings Ltd | Construction | 2018 |
| JPS Consulting Ltd | Administrative & support | 2025 |
| JPS Electrical Contractors Limited | Construction | 2009 |
| JPS Flowers Ltd | Wholesale & retail | 2014 |
| JPT Subaru Ltd | Financial services | 2018 |
| JR Cooling Ltd | Energy | 2020 |
| JR Crown Solutions Ltd | Transport & logistics | 2026 |
| JR Dudley Properties Ltd | Real estate | 2025 |
| JR Handyman Services Ltd | Construction | 2025 |
| JR Motor Hub Limited | Wholesale & retail | 2025 |
| JR Plumbing & Heating (Midlands) Limited | Construction | 2015 |
| Jram Group Ltd | Wholesale & retail | 2026 |
| Jrcv Consulting Ltd | Professional & scientific | 2009 |
| JRK Food Services Limited | Hospitality | 2024 |
| JRP Electrical (Derby) Limited | Construction | 2012 |
| JRP.88 Limited | Health & social care | 2025 |
| Jrph Construction Limited | Construction | 2023 |
| Jrph Properties Limited | Real estate | 2019 |
| Jrssd Property Management Ltd | Real estate | 2021 |
| JRT Scaffolding Limited | Construction | 2023 |
| JRW Coaching Ltd | Professional & scientific | 2025 |
| JS Academic Limited | Education | 2013 |
| JS Auto Electrics Ltd | Wholesale & retail | 2020 |
| JS Commercial Property Group Ltd | Real estate | 2025 |
| JS Construction Domestic & Commercial Ltd | Construction | 2017 |
| JS Contracting Services Ltd | Construction | 2026 |
| JS Decorating and Maintenance Limited | Construction | 2025 |
| JS Derby Services Ltd | Manufacturing | 2025 |
| JS Media Events Ltd | Professional & scientific | 2023 |
| JS Media Limited | Information & communication | 2013 |
| JS Prodrive Limited | Transport & logistics | 2026 |
| JS Project Services Ltd | Construction | 2023 |
| JS Properties (Developments) Ltd | Real estate | 2026 |
| JS Properties (Holdings) Ltd | Financial services | 2026 |
| JS Properties Group UK Limited | Real estate | 2018 |
| JS Refurbishments Ltd | Construction | 2025 |
| JS Supported Living Services Ltd | Health & social care | 2021 |
| Js&Mb Building Contractors Ltd | Construction | 2017 |
| JSA (Midlands) Limited | Financial services | 2021 |
| JSA Design Group Holdings Limited | Financial services | 2023 |
| JSA Design Group Ltd | Professional & scientific | 2003 |
| JSA Group Holdings Limited | Financial services | 2020 |
| JSA Property Services (Midlands) Limited | Real estate | 2021 |
| JSB Holdings Limited | Financial services | 2017 |
| JSB Systems Limited | Information & communication | 1992 |
| Jsbk Holdings Limited | Other services | 2017 |
| JSC Efarms LLP | | 2017 |
| JSC Farming Limited | Agriculture & fishing | 2014 |
| JSD Derby Brickwork Limited | Construction | 2021 |
| JSH Pipeline Contractors Limited | Construction | 2012 |
| JSK Investments Ltd | Real estate | 2022 |
| Jsons Homes Ltd | Real estate | 2018 |
| JSP Contractors Ltd | Construction | 2018 |
| JSR PUB Management Ltd | Hospitality | 2025 |
| JSS Engineering Services Limited | Manufacturing | 2018 |
| Jstead Living Property Developments Limited | Real estate | 2020 |
| JSV Locums Limited | Health & social care | 2015 |
| JSV Media Limited | Information & communication | 2010 |
| JT Exevea Limited | Health & social care | 2018 |
| JT Shop Ltd | Wholesale & retail | 2024 |
| JT Sons Ltd | Transport & logistics | 2024 |
| JTA Accountants Derby Limited | Professional & scientific | 2019 |
| Jtnm-Trade Limited | Wholesale & retail | 2024 |
| JTW Carpet Cleaning Services Ltd | Administrative & support | 2024 |
| JTW Hair Ltd | Other services | 2024 |
| JTW Landscaping Ltd | Administrative & support | 2021 |