| J.G. Coates Holdings Limited | Professional & scientific | 2018 |
| J.M.C Logistical Services Ltd | Wholesale & retail | 2013 |
| J2 Technology Ltd | Administrative & support | 2017 |
| Jabberwocky Training & Development Ltd | Information & communication | 2024 |
| Jabbie Holdings Ltd | Financial services | 2024 |
| Jabz Food Ltd | Hospitality | 2023 |
| Jacana Produce Limited | Wholesale & retail | 1999 |
| Jack Jones Barbers Padiham Ltd | Other services | 2024 |
| Jacksjackets Ltd | Hospitality | 2025 |
| Jackson Construction Solutions Ltd | Construction | 2016 |
| Jacksonsoft Consulting Limited | Information & communication | 2016 |
| JAK Marketing Solutions Ltd | Information & communication | 2025 |
| James Daley Class Representative LLP | | 2024 |
| James Hargreaves Holdings Limited | Wholesale & retail | 2015 |
| James Hargreaves Limited | Extraterritorial | 2020 |
| James Hargreaves PM Limited | Wholesale & retail | 2008 |
| James Hargreaves(Plumbers'Merchants)Limited | Wholesale & retail | 1923 |
| James Hulme Transport Limited | Transport & logistics | 2023 |
| James LEE Joinery Limited | Construction | 2019 |
| James Poulson Technical Services Limited | Construction | 2008 |
| James Thompson Infrastructure Limited | Construction | 2019 |
| Jamie Ingham Ltd | Professional & scientific | 2024 |
| JAP Autos Ltd | Wholesale & retail | 2022 |
| Jason Scott Crofts Services Ltd. | Construction | 2007 |
| Javaria Ltd | Health & social care | 2016 |
| Jaykay D Limited | Health & social care | 2020 |
| JBI Engineering NW Ltd | Manufacturing | 2010 |
| Jbse Consulting Engineers Ltd | Professional & scientific | 2026 |
| JCB Price & SON Ltd | Construction | 2021 |
| JD Kitchens and Bedrooms Ltd | Manufacturing | 2026 |
| JD Manufacturing Limited | Manufacturing | 2017 |
| Jdcr Limited | Other services | 2024 |
| JDD Contracts Limited | Construction | 2017 |
| JDG Motor Group Ltd | Wholesale & retail | 2018 |
| Jdta Properties Ltd | Real estate | 2025 |
| JDW87 Holdings Limited | Wholesale & retail | 2024 |
| Jeaniedeans Limited | Real estate | 2023 |
| Jelly Melts Ltd | Wholesale & retail | 2022 |
| Jessieva Ltd | Construction | 2015 |
| JET Logistics Ltd | Administrative & support | 2017 |
| Jetglobal Limited | Real estate | 1990 |
| JHS Property Renovations Ltd | Construction | 2018 |
| Jigsaw Quest Limited | Real estate | 2012 |
| Jimmy's RAW Feed Padiham Ltd | Wholesale & retail | 2024 |
| JJ Halstead Properties Ltd | Real estate | 2024 |
| JJB Consulting and Evaluation Limited | Professional & scientific | 2024 |
| JJW Building and Groundworks Ltd | Construction | 2022 |
| JKL Heating & Plumbing Limited | Construction | 2011 |
| JL Leisure (North West) Ltd | Hospitality | 2013 |
| JLH Decorators Ltd | Construction | 2017 |
| JM Business Consulting Ltd | Professional & scientific | 2015 |
| JMC Mechanical & Electrical Ltd | Construction | 2011 |
| JNP Delivery Limited | Transport & logistics | 2024 |
| JOA Fresh Foods Ltd | Hospitality | 2024 |
| Jobe Entertainment Ltd | Hospitality | 2018 |
| John Canavan Contracting Ltd | Construction | 2026 |
| John D Smith Transport Limited | Transport & logistics | 2015 |
| John Dawson Counselling and Psychotherapy Limited | Health & social care | 2016 |
| John Duncan Lettings Limited | Real estate | 2017 |
| John Fallows Accountants Ltd | Professional & scientific | 2002 |
| John Fenwick (Rossendale) EOT Limited | Extraterritorial | 2023 |
| John Fenwick (Rossendale) Ltd. | Wholesale & retail | 1990 |
| John Mcgregor Financial Services Ltd | Professional & scientific | 2006 |
| John Nicholls (Window Cleaning Services) Limited | Administrative & support | 2006 |
| John Riley Electrical Contractors Ltd | Construction | 2011 |
| John Spencer (Textiles) Limited | Manufacturing | 1971 |
| John Trickett Wealth Management LP | | 2023 |
| JOI Windows & Doors Ltd | Construction | 2026 |
| Joinlist Limited | Information & communication | 2022 |
| Jones Metcalf Ltd | Transport & logistics | 2000 |
| Jones Properties Limited | Real estate | 2017 |
| Jonsimon Bacup Limited | Real estate | 2023 |
| Jonsimon Burnley Ltd | Real estate | 2017 |
| Jordan S Bird Water Treatment Ltd | Water & waste | 2025 |
| Joseph Jacob Consulting Ltd | Administrative & support | 2017 |
| Joshua Hoyle Limited | Wholesale & retail | 2017 |
| JP Construction (Lancashire) Ltd | Construction | 2026 |
| JP Contractors (Lancashire) Limited | Construction | 2020 |
| JP Electrical & Construction Ltd | Construction | 2020 |
| JP Motors Burnley Limited | Wholesale & retail | 2022 |
| JP Welding Services Limited | Manufacturing | 2011 |
| Jpad Homes Ltd | Real estate | 2018 |
| JPC Fire & Security Ltd | Administrative & support | 2017 |
| JPD and Consulting Limited | Real estate | 2019 |
| Jpes Consulting Limited | Professional & scientific | 2013 |
| JR Lingat Ltd | Wholesale & retail | 2025 |
| JRS Driver Hire Ltd | Administrative & support | 2020 |
| JS and B Ltd | Financial services | 2023 |
| JS Medical Support Limited | Health & social care | 2024 |
| JSB Safety Solutions Ltd | Professional & scientific | 2023 |
| JSU Holdings Limited | Real estate | 2023 |
| JT Bespoke Limited | Construction | 2022 |
| Jt&S Comforts Ltd | Wholesale & retail | 2025 |
| JTG Agency Ltd | Other services | 2017 |
| JTH Enterprises Ltd | Construction | 2017 |
| Judy Hines Limited | Professional & scientific | 2010 |
| Jukebar Late Night Convenience Store Ltd | Wholesale & retail | 2024 |
| Jungle Grill BB10 Ltd | Hospitality | 2025 |
| Juniper Aesthetics & Skin Clinic Ltd | Other services | 2018 |
| Just for Children (Education and Care) Limited | Education | 2019 |