| JBD Developments Limited | Construction | 2017 |
| JBD NO3 LLP | | 2026 |
| JBD Services Ltd | Professional & scientific | 2019 |
| JBF Automotive Ltd | Wholesale & retail | 2014 |
| JBF Property Investments Limited | Real estate | 2025 |
| JBJ Computer Consultancy Limited | Information & communication | 1998 |
| Jblh Limited | Construction | 2023 |
| JBM Automotive Limited | Wholesale & retail | 2020 |
| JBM Mart 2 Ltd | Wholesale & retail | 2026 |
| JBM Mart Ltd | Wholesale & retail | 2025 |
| JBM Performance Limited | Wholesale & retail | 2021 |
| Jbot 26 Ltd | Administrative & support | 2026 |
| JBR Investment Group Ltd | Real estate | 2025 |
| JBT Designs Ltd | Professional & scientific | 2017 |
| JBY Transport Ltd | Transport & logistics | 2021 |
| JC 82 Limited | Arts & recreation | 2006 |
| JC Blackman Ltd | Administrative & support | 2023 |
| JC Driveways Ltd | Construction | 2026 |
| JC Lettings and Property Management Limited | Real estate | 2022 |
| JC Plumbing & Heating Solutions Ltd | Construction | 2020 |
| JC Technical Services Limited | Mining & quarrying | 2015 |
| JC Utility Services Ltd | Construction | 2016 |
| JCA Supervision Limited | Construction | 2017 |
| Jcaw Consulting Limited | Professional & scientific | 2025 |
| JCB Renovations Ltd | Construction | 2024 |
| JCD Lettings Ltd | Real estate | 2023 |
| JCF Holdings Ltd | Financial services | 2023 |
| JCG Contracts Limited | Construction | 2006 |
| JCH Design & Installation Ltd | Information & communication | 2016 |
| JCH Flooring Ltd | Construction | 2022 |
| Jchimp Limited | Professional & scientific | 2021 |
| Jckson Ltd | Other services | 2024 |
| JCL Asset Finance Ltd | Real estate | 2024 |
| Jclg Limited | Real estate | 1995 |
| JCM & GFM Property Ltd | Real estate | 2021 |
| JCM Hospitality Consultancy Limited | Information & communication | 2024 |
| JCN Capital Ltd | Financial services | 2026 |
| JCP Logistics Ltd | Transport & logistics | 2011 |
| JCR Civils Ltd | Professional & scientific | 2026 |
| Jcri Ltd | Health & social care | 2024 |
| JCS Hand & Plastic Surgery Ltd | Health & social care | 2024 |
| Jcsre Limited | Real estate | 2025 |
| JCT Electrical Technology Limited | Energy | 2012 |
| JCW Electrical Contractors Ltd | Construction | 2023 |
| JCW Plastering Services Ltd | Construction | 2023 |
| JD 500 Limited | Professional & scientific | 2010 |
| JD Bartholomew Holdings Limited | Professional & scientific | 2009 |
| JD Blundell Ltd | Real estate | 2018 |
| JD Carpets and Beds Limited | Wholesale & retail | 2025 |
| JD Catering Services Ltd | Hospitality | 2020 |
| JD Fresh Renovation Ltd | Construction | 2022 |
| JD Hope Property Limited | Real estate | 2025 |
| JD Moss Limited | Real estate | 2012 |
| JD Projects Ltd | Real estate | 2023 |
| JD Translink Ltd | Transport & logistics | 2024 |
| JDG Propco Limited | Real estate | 2017 |
| JDH (UK) Management Limited | Real estate | 2022 |
| JDH Investment Properties Limited | Construction | 2025 |
| JDH Properties (Hooton) Limited | Real estate | 2022 |
| JDH Properties (Lytham) Limited | Real estate | 2022 |
| JDH Property Group Limited | Real estate | 2022 |
| JDH Property Investments (NW) Limited | Real estate | 2022 |
| Jdhomesawayproperties Ltd | Real estate | 2024 |
| JDI Construction Products Ltd | Wholesale & retail | 2020 |
| Jdjd Property Limited | Real estate | 2019 |
| JDL Pubs Ltd | Hospitality | 2023 |
| JDM Access Ltd | Administrative & support | 2013 |
| JDM Metals and Plastics Limited | Wholesale & retail | 2022 |
| JDM Sparks Ltd | Construction | 2026 |
| JDP Build Limited | Construction | 2024 |
| JDS Developments (Contractors) Ltd | Construction | 2019 |
| JDS Gynaecology Ltd | Health & social care | 2016 |
| JDS Lettings Limited | Real estate | 2024 |
| JDS Metaltech Ltd | Wholesale & retail | 2014 |
| JDW Medical Services Ltd | Professional & scientific | 2017 |
| JE & T Property Group Limited | Financial services | 2024 |
| JE & T Property Solutions Limited | Real estate | 2024 |
| JE and T Homes Limited | Real estate | 2016 |
| JE James Cycles Ltd | Extraterritorial | 2021 |
| JE Mccarthy Limited | Arts & recreation | 2026 |
| Jean London Limited | Wholesale & retail | 2020 |
| JEB Enterprises Limited | Administrative & support | 2011 |
| Jebour Ltd | Real estate | 2013 |
| Jeccf Ltd | Professional & scientific | 2025 |
| JED Commercial Services Ltd | Professional & scientific | 2026 |
| JED Consultancy Limited | Administrative & support | 2018 |
| JED Orthopaedic Consulting Limited | Health & social care | 2022 |
| Jedediah-Paul Ltd | Health & social care | 2021 |
| Jedi Gear Store Limited | Wholesale & retail | 2023 |
| Jeds Dead Good Limited | Manufacturing | 2020 |
| Jedset Products Ltd | Wholesale & retail | 2018 |
| JEE Prep Limited | Information & communication | 2023 |
| Jeera Tasty Meals Limited | Hospitality | 2024 |
| Jeevs & VT Limited | Information & communication | 2015 |
| JEF Autos Ltd | Wholesale & retail | 2016 |
| JEF Industrial UK Ltd | Manufacturing | 2025 |
| Jefferson Sheard Limited | Professional & scientific | 2010 |
| Jeffersons Health Care Limited | Health & social care | 2014 |
| Jehovah Jireh Commercial Support Ltd | Real estate | 2020 |
| Jehovah-Jireh Property Consultancy Limited | Real estate | 2016 |