| J & F Rail Ltd | Administrative & support | 2024 |
| J a Roberts & SON Building Contractors Ltd | Construction | 2024 |
| J Blears I.T Solutions Ltd | Information & communication | 2018 |
| J J C M Properties Ltd | Households | 2017 |
| J L Lifts Ltd | Construction | 2003 |
| J Pointon Limited | Construction | 2014 |
| J&L Express Logistics Ltd | Transport & logistics | 2019 |
| J.P.F Holdings Limited | Administrative & support | 2017 |
| Jach Hire Limited | Administrative & support | 2021 |
| Jach Holdings Limited | Financial services | 2020 |
| Jackal Sport Ltd | Wholesale & retail | 2026 |
| Jackson Engineering Services (JES) Limited | Professional & scientific | 2023 |
| Jackson Homes Cheshire Limited | Construction | 2017 |
| Jackson Project Consulting Limited | Professional & scientific | 2011 |
| Jacquann Limited | Professional & scientific | 2015 |
| Jade Buddha Ltd | Hospitality | 2014 |
| Jade Business Resolutions Limited | Professional & scientific | 2014 |
| James Bell Architecture Limited | Professional & scientific | 2009 |
| James Lynch & Sons (Transport) Limited | Transport & logistics | 1954 |
| James Moran Property Limited | Real estate | 2025 |
| Jaryl Holdings Ltd | Financial services | 2023 |
| Jathbe Ltd | Public administration | 2019 |
| JAW Property Investments Limited | Real estate | 2025 |
| JB CNC Solutions Ltd | Information & communication | 2015 |
| JB Droneworks Limited | Information & communication | 2025 |
| JBA Property Partners Limited | Real estate | 2022 |
| Jbell Limited | Administrative & support | 2023 |
| Jbell Materials Limited | Wholesale & retail | 2023 |
| JBJ Properties Limited | Real estate | 2003 |
| JCP Management Ltd | Households | 2025 |
| Jeep Rail Limited | Administrative & support | 2015 |
| Jenny Hall Training Academy Limited | Other services | 2016 |
| Jestoddity Ltd | Wholesale & retail | 2020 |
| Jett Medical Limited | Other services | 2017 |
| JFH Horticultural Supplies Limited | Wholesale & retail | 2013 |
| JH Consult Limited | Professional & scientific | 2015 |
| JHC Management Ltd | Real estate | 2023 |
| JIA YI Ltd | Hospitality | 2015 |
| Jiarong Limited | Information & communication | 2017 |
| Jjfitz Ltd | Wholesale & retail | 2023 |
| JKB Limited | Professional & scientific | 2007 |
| JKB Modelling Limited | Professional & scientific | 2013 |
| JKL Catering Limited | Hospitality | 2010 |
| JL Joinery & Building Services Limited | Construction | 2019 |
| JLA Homes Ltd | Real estate | 2025 |
| Jliv Consulting Ltd | Professional & scientific | 2024 |
| Jliv Ltd | Real estate | 2024 |
| Jlnk Holdings Ltd | Real estate | 2025 |
| JLU Associates Ltd | Health & social care | 2024 |
| JMF Groundworks Cheshire Ltd | Construction | 2019 |
| JNB Fitness Ltd | Arts & recreation | 2015 |
| JNS Lineman Limited | Professional & scientific | 2012 |
| JO Burgess Ltd | Health & social care | 2018 |
| John Greenall & Co Limited | Professional & scientific | 2012 |
| John Scholey Limited | Health & social care | 2020 |
| Johnson HSE Services Ltd | Extraterritorial | 2014 |
| Jolly Carter Jager BUS Ltd | Transport & logistics | 2025 |
| Jolly Carter Ltd | Hospitality | 2026 |
| JON Rouse & Co Limited | Professional & scientific | 2017 |
| Jonathan Myles Smith Hairdressing Ltd | Other services | 2023 |
| JP Precision Limited | Professional & scientific | 2022 |
| Jpcb Rentals Limited | Hospitality | 2023 |
| JPT Building & Roofing Ltd | Construction | 2021 |
| JRD Locksmiths Ltd | Construction | 2025 |
| JRT Rentals Ltd | Real estate | 2025 |
| JS Bean Limited | Construction | 2019 |
| JSJ Power Plant Engineers Ltd | Professional & scientific | 2024 |
| JT42 Ltd | Arts & recreation | 2022 |
| JTD Dent Removal Ltd | Wholesale & retail | 2013 |
| JTM Catering Solutions Limited | Hospitality | 2025 |
| JTM Electech Ltd | Construction | 2024 |
| Judeson Engineering Ltd | Construction | 2022 |
| Judeson Solutions Ltd | Real estate | 2020 |
| Juribt Limited | Financial services | 2024 |
| Just for Kicks Sports Development Limited | Arts & recreation | 2016 |
| Just Roofs Cheshire Limited | Construction | 2014 |
| JWC Surveyors Limited | Professional & scientific | 2022 |
| K Hospitality Group Ltd | Hospitality | 2026 |
| K.D. Buckley Project Management Limited | Real estate | 1996 |
| K2H Cubar Ltd | Hospitality | 2024 |
| K2P Nails Company Limited | Other services | 2022 |
| K8 Commercial Limited | Financial services | 2013 |
| K8 Group Limited | Professional & scientific | 2006 |
| K8 Retail Limited | Hospitality | 2006 |
| K9 Playtime Ltd | Arts & recreation | 2026 |
| KAB Development & Construction Limited | Construction | 2010 |
| Kamo Limited | Wholesale & retail | 1990 |
| Kapro Property Group Ltd | Real estate | 2026 |
| Karen Butler Associates Limited | Professional & scientific | 2012 |
| Kast Aesthetics Academy Limited | Education | 2022 |
| Kast Aesthetics Limited | Other services | 2014 |
| Kast Medical Ltd | Health & social care | 2026 |
| Kate Wheat Property Ltd | Real estate | 2025 |
| Katie JAY Media and Events Ltd | Professional & scientific | 2023 |
| Kayhill Consulting Limited | Professional & scientific | 2011 |
| Kaz's Creature Comforts Limited | Wholesale & retail | 2020 |
| KCO Brickwork and Construction Ltd | Construction | 2025 |
| Kebab Range Fast Food Ltd | Hospitality | 2023 |
| Keeley Todd Consultancy Limited | Professional & scientific | 2014 |
| Keeping Company Group Limited | Information & communication | 2024 |