| J&M Services (NW) Limited | Financial services | 2023 |
| J&Nb Autos Ltd | Wholesale & retail | 2024 |
| J&P Caravans Ltd | Wholesale & retail | 2018 |
| J&P Civils Ltd | Construction | 2025 |
| J-Mcdonald Properties Limited | Real estate | 2025 |
| J. & R. Alker Sports Ground Construction Limited | Professional & scientific | 2003 |
| J. Berry Floor Designs Ltd | Construction | 2011 |
| J. Dillon Electrical Services Ltd | Construction | 2017 |
| J. Maher Limited | Construction | 2004 |
| J. Perkins Supplies Ltd | Wholesale & retail | 2021 |
| J.B. Almond Ltd | Manufacturing | 2016 |
| J.C.H. Draughting Ltd | Professional & scientific | 2011 |
| J.Coats Enterprises Ltd | Wholesale & retail | 2024 |
| J.Dot Couriers Ltd | Other services | 2018 |
| J.G. Fletcher & SON (Bakers) Ltd | Manufacturing | 2006 |
| J.G.B. Investments (Wigan) Limited | Construction | 1998 |
| J.J. Joinery Orrell Ltd | Construction | 2015 |
| J.L.H. Trucking Limited | Transport & logistics | 2020 |
| J.L.S. Solutions Limited | Professional & scientific | 1998 |
| J.M.Campbell Plumbing & Heating Ltd | Construction | 2023 |
| J.M.T. Accounting Services Limited | Extraterritorial | 2002 |
| J.O.Hulbert Ltd | Information & communication | 2017 |
| J.P. Oils Limited | Wholesale & retail | 2002 |
| J.T. & E. Castings Limited | Manufacturing | 1959 |
| J.W. Wild Limited | Real estate | 1937 |
| J.W.Ratcliffe & Sons Limited | Real estate | 1955 |
| J5 Solutions Ltd | Administrative & support | 2018 |
| JAB Solutions Limited | Wholesale & retail | 2022 |
| JAC Property Developments Limited | Real estate | 2021 |
| Jaccat Ltd | Health & social care | 2026 |
| Jack Fast Food Ltd | Hospitality | 2025 |
| Jack Hallworth Training Limited | Education | 2018 |
| Jack in the Box Day Nursery (Wigan) Ltd | Education | 2014 |
| Jack Oats Ltd | Professional & scientific | 2021 |
| JACK5000 Ltd | Hospitality | 2022 |
| Jackbit Foodhall Ltd | Wholesale & retail | 2023 |
| Jackson VP Properties Ltd | Real estate | 2024 |
| Jacobphillips Limited | Administrative & support | 2012 |
| Jacq Property Ltd | Real estate | 2018 |
| Jacqueline Cannon Limited | Information & communication | 2016 |
| Jacqui Parr Limited | Professional & scientific | 2020 |
| JAD (NW) Limited | Hospitality | 2023 |
| JAD Limited | Hospitality | 2019 |
| JAD Management Limited | Hospitality | 2026 |
| Jaegan Ltd | Real estate | 2022 |
| Jaelse Ltd | Professional & scientific | 2021 |
| Jagbreakers.Net Limited | Wholesale & retail | 2014 |
| Jagman Limited | Wholesale & retail | 2003 |
| Jagodka Transport Ltd | Transport & logistics | 2024 |
| Jake Hudson Joinery Ltd | Manufacturing | 2023 |
| Jako Falltrades Global Ltd | Wholesale & retail | 2023 |
| JAM Bar Limited | Hospitality | 2024 |
| JAM Packed Productions Limited | Information & communication | 2023 |
| James & Co. Business Solutions Ltd | Administrative & support | 2025 |
| James Cook ILA Limited | Financial services | 2022 |
| James Coxon Ltd | Transport & logistics | 2024 |
| James Fowler Agency Ltd | Other services | 2025 |
| James Paige Ltd | Administrative & support | 2012 |
| James Parle Consultancy Limited | Information & communication | 2022 |
| James Prunty Coaching Limited | Other services | 2024 |
| Jamie Snelgrove Consulting Ltd | Professional & scientific | 2025 |
| Jamieos Creative Ltd | Professional & scientific | 2023 |
| Jamma Investco Limited | Financial services | 2017 |
| Jamma Properties Limited | Real estate | 2017 |
| Jammoca | Professional & scientific | 2023 |
| Jamo Distribution Ltd | Wholesale & retail | 2026 |
| JAMUNA94 Ltd | Hospitality | 2023 |
| Jangerose Ltd | Real estate | 2014 |
| JAP Distribution Ltd | Wholesale & retail | 2026 |
| Jappity North West Limited | Wholesale & retail | 2009 |
| Jardine Crane Hire Limited | Administrative & support | 2010 |
| Jarock Concept Ltd | Administrative & support | 2025 |
| Jason Linnane & Associates Ltd | Professional & scientific | 2014 |
| Jaws Property Group Ltd | Real estate | 2024 |
| Jaxon Feeley Ltd | Information & communication | 2024 |
| Jaxonja Limited | Real estate | 2020 |
| Jaybank Leisure Ltd | Administrative & support | 2013 |
| Jaymac Property Limited | Construction | 2020 |
| Jaynestevenstaylor Ltd | Health & social care | 2024 |
| Jazeera Wigan Ltd | Real estate | 2024 |
| Jazwol | Professional & scientific | 2023 |
| Jazzed UP Confectionary & Events Ltd | Manufacturing | 2020 |
| JB Bathrooms Ltd | Wholesale & retail | 2025 |
| JB Brickwork & Design Limited | Construction | 2024 |
| JB Design Engineering Ltd | Professional & scientific | 2017 |
| JB Landscaping Services Limited | Construction | 2026 |
| JB Rising Ltd | Real estate | 2024 |
| JB Scrap Ltd | Wholesale & retail | 2024 |
| JB Shoe Designs Limited | Professional & scientific | 2010 |
| JBD Golf Ltd | Wholesale & retail | 2020 |
| JBH Property Ventures Ltd | Real estate | 2025 |
| JBJ IT Ltd | Professional & scientific | 2025 |
| JBM Professional Services Ltd | Administrative & support | 2025 |
| JBR Arbitrage Ltd | Wholesale & retail | 2024 |
| JBV Solution Ltd | Wholesale & retail | 2025 |
| JC & CS Properties Limited | Real estate | 2003 |
| JC Legal Costs Ltd | Professional & scientific | 2020 |
| JC Salon Ltd | Other services | 2010 |
| JC Utilities Ltd | Construction | 2013 |
| JCB Property Group Ltd | Real estate | 2024 |