| J H Contractors Ltd | Administrative & support | 2008 |
| J K Ashbrook Holdings Limited | Administrative & support | 2014 |
| J K Ashbrook Limited | Agriculture & fishing | 2005 |
| J M Chase Builders Ltd | Construction | 2018 |
| J Oakes Construction & Development Ltd | Construction | 2024 |
| J P M Aviation Limited | Manufacturing | 1998 |
| J Sharples Ltd. | Professional & scientific | 2014 |
| J T Hawkes Solar Limited | Professional & scientific | 2012 |
| J Welsh Farriers Ltd | Agriculture & fishing | 2009 |
| J&D I-Care Limited | Health & social care | 2012 |
| J&Dw Estates Ltd | Real estate | 2025 |
| J. Sheard Groundwork Limited | Construction | 2007 |
| JA Leadership in Education Ltd | Education | 2024 |
| JAB Plant Limited | Manufacturing | 2015 |
| Jacaranda BM Limited | Professional & scientific | 2015 |
| Jackson Tyres Ltd | Wholesale & retail | 2012 |
| Jacob Mobley Ltd | Construction | 2014 |
| Jacob Thomas Property Ltd | Real estate | 2023 |
| Jadc Property Holdings Limited | Real estate | 2024 |
| James Berkin Ltd | Professional & scientific | 2026 |
| James Broad Ltd. | Wholesale & retail | 2016 |
| James Crossland Limited | Professional & scientific | 2005 |
| Jamie Boddice Engineering Ltd | Construction | 2024 |
| Jamie Parry Limited | Hospitality | 2019 |
| Jane Allen Ltd | Professional & scientific | 2014 |
| Jane PUB Ltd | Administrative & support | 2022 |
| Jantex Furnishing Co.Limited | Wholesale & retail | 1974 |
| Jaroca Joinery Ltd | Construction | 2026 |
| Jarrer Limited | Professional & scientific | 2014 |
| Javea Management Limited | Real estate | 2010 |
| JAX Premium Ltd | Wholesale & retail | 2024 |
| Jaykay Residential Ltd | Hospitality | 2022 |
| JBT Consultants Limited | Administrative & support | 2025 |
| JCP Project Management Ltd | Professional & scientific | 2021 |
| JDS Groundcare Ltd | Construction | 2007 |
| Jelly Dog Ltd | Wholesale & retail | 2024 |
| Jessica Eaton Wealth Management Ltd | Administrative & support | 2020 |
| Jessop and Ward Vehicle Sourcing Ltd | Wholesale & retail | 2026 |
| JET Car Specialists Ltd | Wholesale & retail | 2025 |
| Jetlaw Management Services Limited | Administrative & support | 2001 |
| Jetuna Limited | Real estate | 2022 |
| JG Mould Electrical Limited | Professional & scientific | 2025 |
| JGB Properties Limited | Construction | 2026 |
| JHJ Properties Limited | Construction | 2004 |
| Jibber Limited | Professional & scientific | 2013 |
| Jigsaw Industrial Ltd. | Manufacturing | 1998 |
| Jimbob Aviation Services Ltd | Manufacturing | 2022 |
| JJ Cooling Limited | Construction | 2011 |
| JJ Cooling Services Limited | Construction | 2019 |
| JJ Edwards Limited | Professional & scientific | 2011 |
| JJC Houses Limited | Professional & scientific | 2024 |
| JKH Freelancing Limited | Professional & scientific | 2026 |
| JKS Retail Group Limited | Wholesale & retail | 2023 |
| JLJ Joinery and Building Ltd | Construction | 2015 |
| JLM Transport Ltd | Transport & logistics | 2015 |
| Jlml Holdings Ltd | Financial services | 2024 |
| JLO Consulting Limited | Information & communication | 2019 |
| JLW Advisory Services Ltd | Professional & scientific | 2022 |
| Jnbl Properties Ltd | Real estate | 2024 |
| JNS Aviation Limited | Manufacturing | 2010 |
| John Austen Associates Limited | Administrative & support | 2004 |
| John Chapman Limited | Manufacturing | 2006 |
| John Taylor Engineering Services Limited | Manufacturing | 2003 |
| John's Barbers Limited | Other services | 2003 |
| Johnson & Orton Property Group Ltd | Real estate | 2025 |
| JON Blows Consultancy Services Limited | Professional & scientific | 2008 |
| JON Brady Limited | Professional & scientific | 2014 |
| Jones Regan Associates Ltd | Professional & scientific | 2024 |
| Jones Regan Wealth Management Ltd | Professional & scientific | 2014 |
| JOO Digital Ltd | Professional & scientific | 2022 |
| Josh Oliver Songs Ltd | Arts & recreation | 2021 |
| Joslan Management Limited | Professional & scientific | 2012 |
| Jotaking Limited | Manufacturing | 1979 |
| JP Medicals Recruitment Limited | Administrative & support | 2015 |
| JPD (Cheshire) Ltd | Construction | 2019 |
| JPE Solutions Ltd | Construction | 2014 |
| Jpeg Properties Ltd | Real estate | 2025 |
| JRH Developments Ltd | Wholesale & retail | 2021 |
| JTA Technology Services Limited | Professional & scientific | 2023 |
| Julia Stott Skills Training Ltd | Health & social care | 2024 |
| Jurter Limited | Professional & scientific | 2014 |
| Jurtone Limited | Professional & scientific | 2012 |
| Just Laughs TV Limited | Information & communication | 2025 |
| Justif Limited | Professional & scientific | 2013 |
| Justriumph Ltd | Wholesale & retail | 2007 |
| JW Macc Ltd | Wholesale & retail | 2021 |
| Jweb Studios Ltd | Information & communication | 2025 |
| K a Brickworks Ltd | Construction | 2021 |
| K a Humfrey Consulting Ltd | Professional & scientific | 2022 |
| K Walker Brickwork Limited | Construction | 2010 |
| K White Mechanical Services Ltd | Professional & scientific | 2023 |
| K-Gen Technologies Limited | Professional & scientific | 2019 |
| K.M.L. Cleaning Services Limited | Other services | 1998 |
| K7 Consultancy Ltd | Professional & scientific | 2017 |
| K9 RAW Cheshire Ltd | Wholesale & retail | 2020 |
| Kaimetrics Ltd | Information & communication | 2023 |
| Kalisto Limited | Professional & scientific | 2016 |
| Kane Aviation Ltd | Manufacturing | 2016 |
| Kanga Health Ltd | Professional & scientific | 2013 |
| Karibu Consulting Limited | Professional & scientific | 2022 |