| JB Projects (Yorkshire) Limited | Construction | 2018 |
| JB Properties (Yorkshire) Limited | Real estate | 2020 |
| JB Realty Ltd | Real estate | 2020 |
| JB Weatherproof Roofing Limited | Construction | 2025 |
| Jb-Tes Ltd | Arts & recreation | 2019 |
| JBA Medical Ltd | Health & social care | 2025 |
| JBD Consultancy LLP | | 2010 |
| JBD Management Limited | Professional & scientific | 2007 |
| Jbel Environmental Services Limited | Professional & scientific | 2016 |
| JBF Agricultural Ltd | Agriculture & fishing | 2020 |
| JBJ Property Limited | Real estate | 2023 |
| JBL Technical Trading UK Ltd | Manufacturing | 2025 |
| Jbod Food Limited | Hospitality | 2021 |
| Jboxuk Limited | Financial services | 2012 |
| Jbpi Limited | Real estate | 2015 |
| Jbrd (UK) Limited | Professional & scientific | 2017 |
| JBS Autos Limited | Wholesale & retail | 2017 |
| JBS Property Solutions Limited | Construction | 2020 |
| Jbsl Limited | Wholesale & retail | 2012 |
| JBW Composite Solutions Ltd | Professional & scientific | 2018 |
| JBW Enterprises Ltd | Wholesale & retail | 2018 |
| JC Affiliate Networks Ltd | Wholesale & retail | 2025 |
| JC Bucknall Ltd | Wholesale & retail | 2015 |
| JC Cleaning Services (Leeds) Ltd | Administrative & support | 2025 |
| JC Domestic Appliances Ltd | Other services | 2020 |
| JC Electrical Leeds Ltd | Construction | 2021 |
| JC Electrical Solutions Limited | Construction | 2017 |
| JC Fenton Limited | Real estate | 2021 |
| JC Law | Real estate | 2012 |
| JC Properties (York) Ltd | Real estate | 2020 |
| JC Property (NO.1) Limited | Real estate | 2001 |
| JC Tattoos Ltd | Arts & recreation | 2022 |
| Jc&C Limited | Other services | 2012 |
| Jcb's Properties Ltd | Real estate | 2025 |
| Jcbd Catering Ltd | Hospitality | 2025 |
| JCC Building Services LLP | | 2009 |
| JCC Maintenance Limited | Construction | 2015 |
| JCE Ltd | Construction | 2017 |
| JCF Property Developments Limited | Construction | 2025 |
| Jcfh Ltd | Professional & scientific | 2021 |
| JCH Convenience Ltd | Wholesale & retail | 2018 |
| JCH Investments Limited | Real estate | 2022 |
| JCH7 Services Ltd | Professional & scientific | 2025 |
| JCK Security Solutions Limited | Administrative & support | 2022 |
| JCK XYZ Ltd | Information & communication | 2024 |
| JCL Consultants Limited | Professional & scientific | 2008 |
| Jclegal UK Ltd | Professional & scientific | 2021 |
| Jcpb Heating Ltd | Construction | 2023 |
| JCR (Leeds) Ltd. | Wholesale & retail | 2020 |
| JCR Property Developments Ltd | Professional & scientific | 2018 |
| JCS GAS Limited | Construction | 2021 |
| JCS Maintenance Ltd | Administrative & support | 2014 |
| JCT Electrical Contractors Limited | Construction | 2022 |
| JCT Investments Ltd | Real estate | 2025 |
| JCT Properties Limited | Real estate | 2011 |
| JCT32 Auto Centre Ltd | Wholesale & retail | 2016 |
| JCT32 Car & Van Sales Ltd | Wholesale & retail | 2014 |
| JCT32 Properties Ltd | Real estate | 2021 |
| Jcul Creative Media Ltd | Information & communication | 2020 |
| JCW Capital Holdings Ltd | Financial services | 2020 |
| JCW Estates Ltd. | Real estate | 2017 |
| JD Barbers Limited | Other services | 2025 |
| JD Business Services Ltd | Manufacturing | 2014 |
| JD Capital Partners Ltd | Administrative & support | 2020 |
| JD Corporate Finance Limited | Administrative & support | 2026 |
| JD Fit-Out Limited | Construction | 2024 |
| JD Gardeners Ltd | Administrative & support | 2025 |
| JD Hirst Limited | Administrative & support | 2019 |
| JD Phoenix Holdings Ltd | Wholesale & retail | 2026 |
| JD Services Domestic Appliance Care Ltd | Manufacturing | 2016 |
| JD Ultimate Building Solutions Ltd | Administrative & support | 2015 |
| JD Wholesales Ltd | Wholesale & retail | 2024 |
| Jd-Mac Ltd | Wholesale & retail | 2015 |
| JDA Consulting Limited | Professional & scientific | 2025 |
| JDA Limited | Real estate | 2006 |
| JDB Contracting Services Limited | Professional & scientific | 2020 |
| JDC Decorating Contractors Ltd | Construction | 2020 |
| Jdcgw Consultancy Limited | Administrative & support | 2012 |
| Jdcm Enterprises Ltd | Households | 2020 |
| JDD Management Ltd | Professional & scientific | 2013 |
| JDE Creative Limited | Construction | 2019 |
| JDE Holdings Group Limited | Financial services | 2025 |
| JDE Ventilation Systems Limited | Energy | 2014 |
| Jdhospitalityventures Ltd | Hospitality | 2026 |
| JDI Properties Limited | Real estate | 2011 |
| Jdkd Ltd | Water & waste | 2024 |
| JDL Marketing Services Ltd | Professional & scientific | 2015 |
| JDL Properties Leeds Ltd | Wholesale & retail | 2007 |
| JDR Facilities Management Ltd | Administrative & support | 2025 |
| JDR Property Investment Partners Ltd | Real estate | 2025 |
| JDR Recruitment Limited | Administrative & support | 2024 |
| JDS Flooring (Yorkshire) Ltd | Wholesale & retail | 2025 |
| JDS Flooring Ltd | Wholesale & retail | 2022 |
| JDS Tool Supplies Ltd | Wholesale & retail | 2025 |
| Jdsh Limited | Professional & scientific | 2018 |
| Jdsh Properties Ltd | Real estate | 2021 |
| JDW Accident Repair Centre Ltd | Wholesale & retail | 2023 |
| JDW Business Solutions (UK) Limited | Professional & scientific | 2012 |
| JDW Payments Ltd | Professional & scientific | 2021 |
| JDW Self Assessment Tax Advisors Ltd | Professional & scientific | 2026 |