| JD Ceramics Northwest Limited | Construction | 2010 |
| JD Kelly Floors Limited | Construction | 2023 |
| JD Mart Ltd | Wholesale & retail | 2020 |
| JD Psychology Services Ltd. | Education | 2022 |
| JDA Key Forensics Ltd | Professional & scientific | 2023 |
| JDH Solutions & Resources Ltd | Wholesale & retail | 2020 |
| JDH Wholesale Limited | Wholesale & retail | 2022 |
| JDL Projects Ltd | Real estate | 2023 |
| JDP Solutions Ltd | Extraterritorial | 2015 |
| JDS Electrical NW Ltd | Construction | 2026 |
| JDT Consultancy and Training Ltd | Professional & scientific | 2025 |
| JDW Construction Services Ltd | Construction | 2026 |
| JE Nurseries Ltd | Health & social care | 2019 |
| JEB International Consulting Limited | Administrative & support | 2025 |
| Jebs North West Limited | Wholesale & retail | 2023 |
| JED Engineering Limited | Professional & scientific | 2008 |
| Jeff Case Limited | Construction | 2025 |
| JEG Associates Limited | Professional & scientific | 2025 |
| JEH Structural Solutions Ltd | Professional & scientific | 2024 |
| Jello Drive Ltd | Administrative & support | 2026 |
| Jemericon Limited | Construction | 2013 |
| Jemoris | Professional & scientific | 2026 |
| JEN Engineering Consultants Ltd | Construction | 2011 |
| Jeneva Consultancy Services Limited | Professional & scientific | 2018 |
| Jeneva Properties Ltd. | Real estate | 1989 |
| Jenn Fashion Morning Design Limited | Wholesale & retail | 2026 |
| Jennings Trading Ltd | Wholesale & retail | 2013 |
| Jenny Hammett Ltd | Wholesale & retail | 2025 |
| Jenny Richmond Ltd | Health & social care | 2023 |
| Jeronimo Ltd | Professional & scientific | 2019 |
| Jerzy Rozek Transport Limited | Transport & logistics | 2016 |
| JES Corp Ltd | Information & communication | 2024 |
| Jesibe | Professional & scientific | 2023 |
| JET Line Drainage Ltd | Water & waste | 2023 |
| JET Property Holdings Limited | Real estate | 2016 |
| Jetosa Care Ltd | Health & social care | 2021 |
| Jett Properties Ltd | Real estate | 2024 |
| Jeyron Limited | Construction | 2006 |
| JF Groundcare Limited | Administrative & support | 2018 |
| JF Motors Northwest Limited | Wholesale & retail | 2012 |
| Jfha Limited | Extraterritorial | 2012 |
| JFT & Sons Limited | Construction | 2015 |
| JFT Automotive Ltd | Wholesale & retail | 2024 |
| JG Construction (Wigan) Ltd | Construction | 2017 |
| JG Developments (Wigan) Ltd | Real estate | 2023 |
| Jg&M Properties Limited | Real estate | 2019 |
| JGB Removals Ltd | Transport & logistics | 2025 |
| JGP Consultancy Services Limited | Professional & scientific | 2015 |
| JGT Rentals Ltd | Real estate | 2023 |
| JGW Landscapes Ltd | Administrative & support | 2026 |
| JH Advertising Ltd | Administrative & support | 2010 |
| JH Installs Ltd | Manufacturing | 2012 |
| JHK Projects Ltd | Other services | 2023 |
| Jhmc T/A Josh Houghton Motor Company Limited | Wholesale & retail | 2018 |
| JIM Southworth Consulting Ltd | Construction | 2010 |
| Jimmy Fairhurst Sales & Services Ltd | Administrative & support | 2003 |
| Jinsei Dojo CIC | Education | 2024 |
| JJ Aspey Holdings Ltd | Financial services | 2026 |
| JJ Aspey Ltd | Real estate | 2023 |
| JJ Global Hub Ltd | Wholesale & retail | 2025 |
| Jj&K Developments Ltd | Construction | 2018 |
| Jjack Limited | Manufacturing | 2024 |
| JJB Contracts Limited | Construction | 2004 |
| JJC Ophthalmics Ltd | Health & social care | 2018 |
| JJG Property Renovations Ltd | Real estate | 2024 |
| JJG Property Ventures Ltd | Real estate | 2026 |
| JJK Engineering Services Ltd | Manufacturing | 2025 |
| Jjluxmotors Ltd | Wholesale & retail | 2016 |
| JJP (NW) Ltd | Health & social care | 2012 |
| JJR Roofing Ltd | Construction | 2025 |
| JJS Electrical Contractor Limited | Construction | 2008 |
| JJS Letting Ltd | Financial services | 2025 |
| JJS Properties LET Ltd | Real estate | 2025 |
| JK 'S E-Cig Warehouse Limited | Wholesale & retail | 2012 |
| JK Chippy Limited | Hospitality | 2019 |
| JK Plumbing&Heating NW Ltd | Construction | 2019 |
| JK Pyke Properties Ltd | Real estate | 2024 |
| JK Shops Ltd | Wholesale & retail | 2022 |
| JK Sports Management Consultancy Ltd | Arts & recreation | 2021 |
| Jk&Co Marketing Limited | Professional & scientific | 2025 |
| JKD Interiors (NW) Ltd | Construction | 2024 |
| JL 1990 Limited | Arts & recreation | 2018 |
| JL Design Services Ltd | Professional & scientific | 2021 |
| JLA Medical & Legal Limited | Health & social care | 2014 |
| JLB North West Limited | Health & social care | 2025 |
| JLB Woodwork Limited | Manufacturing | 2022 |
| JLP CIV ENG Ltd | Construction | 2023 |
| JLP Civils Design & Build Ltd | Professional & scientific | 2024 |
| JLP Civils Ltd | Construction | 2021 |
| JLP Surveying Consultants Northern Ltd | Construction | 2025 |
| JLP Utility & Land Surveying Consultants Limited | Professional & scientific | 2023 |
| Jlyl Limited | Real estate | 2026 |
| JM Courier Solutions Limited | Transport & logistics | 2023 |
| JM Electrical & Data Solutions Limited | Construction | 2013 |
| JM Home Improvements Ltd | Professional & scientific | 2026 |
| JM Locum (NW) Limited | Health & social care | 2019 |
| JM Stores Ltd | Wholesale & retail | 2023 |
| Jm.Gsk Ltd | Health & social care | 2015 |
| JM1 Consulting Ltd | Administrative & support | 2024 |
| JM800 Media Ltd | Information & communication | 2022 |