| JBP Plumbing and Heating Ltd | Construction | 2016 |
| JBR Engineering (UK) Limited | Manufacturing | 2017 |
| Jbrons Limited | Information & communication | 2017 |
| JC Cloud Limited | Wholesale & retail | 2023 |
| JC Enterprise Limited | Financial services | 2021 |
| JC Golden House Limited | Hospitality | 2023 |
| JC Midlands Maintenance Ltd | Wholesale & retail | 2022 |
| JC the Transporter Ltd | Transport & logistics | 2023 |
| Jcap Investment Ltd | Real estate | 2024 |
| Jces Marine Limited | Financial services | 2024 |
| JCH Maintenance Ltd | Construction | 2023 |
| Jchs Properties Limited | Real estate | 2017 |
| JCL Plumbing & Heating (Derby) Ltd | Construction | 2015 |
| JCL Psychology Ltd | Education | 2026 |
| JCM Rail Services Ltd | Professional & scientific | 2022 |
| Jcpt Properties Ltd | Real estate | 2026 |
| JCS Capital Investments Ltd | Financial services | 2021 |
| Jcsd Consulting Ltd | Education | 2024 |
| Jcsp Investments Limited | Real estate | 2025 |
| JCW Associates (UK) Ltd | Other services | 2019 |
| Jcwhite Property Management and Lettings Limited | Real estate | 2017 |
| JD Castles Ltd | Administrative & support | 2026 |
| JD Content Studios Ltd | Information & communication | 2025 |
| JD Driveways & Patio’S Ltd | Construction | 2026 |
| JD Geoscience Limited | Mining & quarrying | 2016 |
| JD Gill Property Group Ltd | Real estate | 2026 |
| JD Glorbit Limited | Wholesale & retail | 2025 |
| JD Home Development Derby Ltd | Construction | 2026 |
| JD Limited Ltd | Wholesale & retail | 2026 |
| JD Motors Derby Limited | Wholesale & retail | 2022 |
| JD Narrowboats Ltd | Manufacturing | 2006 |
| JD Personal Training Ltd | Arts & recreation | 2018 |
| JD Sidhu Ltd | Transport & logistics | 2024 |
| JD Smile Ltd | Health & social care | 2026 |
| JD Textiles Limited | Professional & scientific | 2010 |
| JD Tyres Derby Limited | Wholesale & retail | 2025 |
| JDB Farming Limited | Agriculture & fishing | 2019 |
| JDC Logistics Ltd | Transport & logistics | 2023 |
| Jdcw Ltd | Construction | 2023 |
| Jdeg Limited | Financial services | 2024 |
| Jdes Consultants Ltd | Professional & scientific | 2007 |
| JDH Consulting Limited | Information & communication | 2003 |
| JDH Consulting Services Limited | Administrative & support | 2017 |
| Jdih (Water & Environment) Ltd. | Wholesale & retail | 2002 |
| JDJ Group Ltd | Wholesale & retail | 2023 |
| JDM Car Specialist Ltd | Wholesale & retail | 2025 |
| JDP Electrical and Mechanical Limited | Construction | 2021 |
| JDR Properties Ltd | Households | 2023 |
| JDW Brands Ltd | Wholesale & retail | 2021 |
| Jdwalker Ltd | Construction | 2023 |
| Je&J Ltd | Financial services | 2019 |
| Jeani Accessories Limited | Wholesale & retail | 1998 |
| Jeanne Booth Limited | Professional & scientific | 2004 |
| Jebra Properties Ltd | Real estate | 2024 |
| JEE JA Jee's Ltd | Hospitality | 2026 |
| Jeenis Solutions Ltd | Information & communication | 2025 |
| Jeff Davis Consulting Ltd | Professional & scientific | 2021 |
| Jeff Handy Services Limited | Manufacturing | 2003 |
| JEH Property Ltd | Real estate | 2021 |
| Jejelola Ltd | Health & social care | 2024 |
| Jelly Capital Limited | Real estate | 2025 |
| Jellyanney Rewear Ltd | Professional & scientific | 2024 |
| Jellyatrics Limited | Wholesale & retail | 2009 |
| JEM Property Limited | Real estate | 2017 |
| Jenacre Labels Limited | Manufacturing | 2005 |
| JENENE22 Limited | Professional & scientific | 2022 |
| Jenkinson Pubs Limited | Hospitality | 2018 |
| Jenovia Properties Ltd | Real estate | 2021 |
| Jensim Solutions Ltd | Professional & scientific | 2024 |
| Jepson Homes Limited | Real estate | 2024 |
| Jervis Auto Services Limited | Wholesale & retail | 2006 |
| Jervis Design Limited | Professional & scientific | 2020 |
| JES Capital Limited | Real estate | 2022 |
| Jesal Savania Endodontics Limited | Real estate | 2018 |
| Jesi Ltd | Wholesale & retail | 2023 |
| Jeskhi Space AGE Technology Limited | Wholesale & retail | 2024 |
| Jess Hair + Beauty Ltd | Other services | 2024 |
| Jessica Long Limited | Professional & scientific | 2003 |
| Jessygirl Ltd | Other services | 2011 |
| Jest Property Holdings Ltd | Real estate | 2025 |
| Jesus Touch World Ministries Limited | Extraterritorial | 2006 |
| JET (Eco) Ltd | Agriculture & fishing | 2021 |
| JET VOX Ltd. | Real estate | 2022 |
| Jeta Holdings Limited | Financial services | 2026 |
| Jetam Social Care Ltd | Health & social care | 2022 |
| Jett Renovations Ltd | Real estate | 2019 |
| Jewel Stores Limited | Wholesale & retail | 2006 |
| JF Investments Limited | Real estate | 2003 |
| JF Logistics & Transportation Ltd | Transport & logistics | 2020 |
| JF Works Ltd | Information & communication | 2015 |
| Jf&M Properties Ltd | Real estate | 2020 |
| Jfdigitaldoodleart Ltd | Wholesale & retail | 2024 |
| Jfestival Limited | Arts & recreation | 2025 |
| JFK Trading Limited | Extraterritorial | 2015 |
| JFW Corporation Limited | Financial services | 2015 |
| JG Hadden Services Limited | Administrative & support | 2017 |
| JG Medics Ltd | Health & social care | 2023 |
| JG UK Logistics Limited | Transport & logistics | 2024 |
| JGC Rail Services Ltd | Professional & scientific | 2025 |
| JGH CDM Ltd | Administrative & support | 2017 |