| Iqra Catering Ltd | Hospitality | 2019 |
| Iqrahomes Ltd | Real estate | 2024 |
| Iron Bull Civil Engineering Ltd | Construction | 2025 |
| Islams Grill Ltd | Hospitality | 2025 |
| Itale Foods Ltd | Wholesale & retail | 2026 |
| Italian Bar Ltd | Hospitality | 2022 |
| ITS ALL About YOU Therapy Limited | Health & social care | 2025 |
| IWB Measuring Solutions Ltd | Professional & scientific | 2018 |
| IZH Properties Ltd | Real estate | 2024 |
| J & H Turner Limited | Real estate | 2003 |
| J & J Properties (Viceroy) Limited | Real estate | 1997 |
| J & M Cosmetics Limited | Professional & scientific | 2026 |
| J a Boult Quality Meats and Deli Ltd | Wholesale & retail | 2018 |
| J Griffiths & Sons Limited | Construction | 2018 |
| J Howard Plumbing & Heating Limited | Construction | 2019 |
| J Mallard Ltd | Transport & logistics | 2014 |
| J N I Consultancy Limited | Professional & scientific | 2018 |
| J Taylor Holdings Limited | Financial services | 2021 |
| J&A's Coffee Wheels Limited | Hospitality | 2017 |
| J&E Furniture Ltd | Wholesale & retail | 2023 |
| J&Jpubmanagement Limited | Hospitality | 2019 |
| J&S Howarth Property Ltd | Real estate | 2020 |
| J&W Childminders Ltd | Health & social care | 2026 |
| J.Ahmed Consultancy Ltd | Professional & scientific | 2023 |
| J.E.N Builders Limited | Construction | 2014 |
| J.H.Ashworth & SON Limited | Manufacturing | 1946 |
| J.J. AM Solutions Ltd | Health & social care | 2016 |
| J.R Listo Limited | Wholesale & retail | 2024 |
| J.T. Management Services Limited | Transport & logistics | 1995 |
| J.W. Cabs & Cars Limited | Wholesale & retail | 1998 |
| J7 Property Group Ltd | Real estate | 2025 |
| JA MCJ Holdings Ltd | Financial services | 2024 |
| JA MCJ Properties Limited | Real estate | 2021 |
| Jack Hamnett Designs Ltd | Professional & scientific | 2025 |
| Jack’S Bar Hyde Ltd | Hospitality | 2024 |
| Jacobsen Ltd | Administrative & support | 2025 |
| Jade Electrical Services Ltd | Construction | 2025 |
| JAG Supply Services Limited | Professional & scientific | 2020 |
| James Fitzpatrick & Co Holdings Limited | Wholesale & retail | 2025 |
| Jamieson Contracting (North West) Limited | Construction | 2001 |
| JAN 26 Limited | Wholesale & retail | 2026 |
| Jannats Beauty Ltd | Other services | 2026 |
| Jardine Estates Limited | Real estate | 2010 |
| Jayne Louise Grundy Limited | Health & social care | 2014 |
| JB Installations NW Ltd | Construction | 2018 |
| JBW Construction Solutions Limited | Construction | 2023 |
| JBW Property Developments Limited | Construction | 2026 |
| JC Aesthetic Perfection Ltd | Other services | 2025 |
| JD Tiling Contracts Ltd | Construction | 2019 |
| Jdfh.Io Ltd | Real estate | 2022 |
| Jedynaktransport Ltd | Transport & logistics | 2023 |
| Jems Holdings Ltd | Real estate | 2020 |
| Jennifer Jackson Company Ltd | Arts & recreation | 2024 |
| JFC Sports Limited | Wholesale & retail | 2003 |
| JG Groundcare Contractors Limited | Administrative & support | 2020 |
| JG Groundcare UK Limited | Arts & recreation | 2013 |
| JG Keane Housing Limited | Real estate | 2025 |
| JGH Contracting Ltd | Construction | 2019 |
| JGW Couriers Ltd | Transport & logistics | 2024 |
| JH Properties (Liverpool) Limited | Real estate | 2024 |
| JJ Dryfix Ltd | Construction | 2023 |
| Jjainspections Ltd | Professional & scientific | 2024 |
| JJS Leasing Ltd | Real estate | 2024 |
| JK17 Limited | Real estate | 2022 |
| JKH Building Services Ltd | Construction | 2021 |
| JKM Watermains Ltd | Construction | 2026 |
| Jkoa Group Ltd | Administrative & support | 2023 |
| JL Capital Limited | Financial services | 2026 |
| JLH Ltd | Professional & scientific | 2023 |
| JM COR Ltd | Administrative & support | 2009 |
| JM Sherratt Services Ltd | Public administration | 2013 |
| JM Vardy Electrical Ltd | Construction | 2020 |
| JMA Business Services Limited | Professional & scientific | 2018 |
| Jmcl Property Limited | Real estate | 2023 |
| Jmparkhurst Ltd | Financial services | 2023 |
| JNS Facilities Limited | Construction | 2016 |
| JO Ferns Ltd | Other services | 2024 |
| JO Michelle Aesthetics Ltd | Other services | 2022 |
| JOH F Sales Ltd | Wholesale & retail | 2026 |
| John Lainton Ltd | Professional & scientific | 2025 |
| Johnson Estates Limited | Real estate | 2019 |
| Jollyzion Limited | Health & social care | 2018 |
| Josef Pownell Golf Ltd | Wholesale & retail | 2025 |
| JR Automotive Ltd | Other services | 2020 |
| Jravi Enterprise Ltd | Wholesale & retail | 2024 |
| JSH Group Limited | Financial services | 2024 |
| JSH Holdings (Hyde) Limited | Financial services | 2020 |
| JSH Shopfitters Ltd | Construction | 2007 |
| Jtsn Limited | Real estate | 2018 |
| JTW Trading (NW) Limited | Professional & scientific | 2023 |
| Julian Sigley & Company Limited | Construction | 1990 |
| Junction 3 Car Sales Limited | Wholesale & retail | 2016 |
| Junior Life Skills Ltd | Information & communication | 2013 |
| Juno Contracts Limited | Other services | 2018 |
| Just Janet Limited | Health & social care | 2015 |
| Justgymgear Ltd | Wholesale & retail | 2024 |
| JV Property Holdings Ltd | Construction | 2026 |
| JWP Messaging Limited | Information & communication | 2011 |
| JWP Sales Ltd | Wholesale & retail | 2025 |
| K & L Properties (North West) Limited | Real estate | 2017 |