| JLC Properties (Cheshire) Limited | Real estate | 2023 |
| JLG Enterprises Ltd | Wholesale & retail | 2026 |
| JLM Utilities Limited | Construction | 2018 |
| Jmslandscapes Ltd | Administrative & support | 2023 |
| JO Martin Consultancy Limited | Professional & scientific | 2016 |
| Joannenuture Limited | Health & social care | 2021 |
| JOB Traffic Ltd | Professional & scientific | 2021 |
| Jobs Working From Home Ltd | Administrative & support | 2019 |
| Jodie Frazer - the Strong Girl Collective Ltd | Professional & scientific | 2023 |
| Jodie Nicola Ltd | Professional & scientific | 2022 |
| JOE Mcdonald Welding Limited | Construction | 2017 |
| Johal Property & Developments Limited | Real estate | 2021 |
| John Bagshaw Consultancy Ltd | Professional & scientific | 2024 |
| John Bowyer Joinery & Building Limited | Construction | 2018 |
| John Burgess Dental Care Limited | Health & social care | 2014 |
| John Davies Feeds Limited | Wholesale & retail | 2005 |
| John Harris Properties Limited | Real estate | 2026 |
| John Lennon Consulting Limited | Professional & scientific | 2017 |
| John Relf,Limited | Real estate | 1911 |
| Johnson Roofing Ltd | Construction | 2013 |
| Johnson’S Catering Limited | Hospitality | 2025 |
| Joined UP Skills CIC | Education | 2026 |
| Jolokia Limited | Professional & scientific | 2020 |
| Jonas Convenience Stores Limited | Wholesale & retail | 2021 |
| Jonathan Gallagher Golf Agencies Limited | Wholesale & retail | 2012 |
| Jones Distillery Ltd | Manufacturing | 2018 |
| Jopol Limited | Real estate | 2016 |
| Jordan Massey Golf Ltd | Education | 2024 |
| Joseph Leigh and Sons Limited | Extraterritorial | 1999 |
| Joseph.Ellen.Michael. Logistics Ltd | Transport & logistics | 2019 |
| Joyline Ltd | Wholesale & retail | 2025 |
| JP Mortgage Solutions Ltd | Financial services | 2026 |
| JP Projects (North West) Ltd | Construction | 2015 |
| JP Property and Leisure Ltd | Hospitality | 2025 |
| JP Steen Health Limited | Health & social care | 2023 |
| JPD Structures Ltd | Construction | 2012 |
| Jpyoung Consulting Ltd | Professional & scientific | 2020 |
| JR Northwest Limited | Hospitality | 2019 |
| JRC7 Property Ltd | Real estate | 2025 |
| Jrml Ltd | Health & social care | 2025 |
| JS Rentals Limited | Administrative & support | 2021 |
| JS Reprotox Solutions Ltd | Professional & scientific | 2015 |
| JSE Business Solutions Limited | Professional & scientific | 2008 |
| JSW Physiotherapy Ltd | Health & social care | 2024 |
| JT Holistics & Health Limited | Health & social care | 2012 |
| JTO Consulting Ltd | Professional & scientific | 2018 |
| Jtpropertydeals Ltd | Administrative & support | 2026 |
| JTS Engineering 4 U Ltd | Wholesale & retail | 2022 |
| JTU Ventures Group Ltd | Financial services | 2026 |
| JTU Ventures Ltd | Information & communication | 2026 |
| Julie Greenwood Ltd | Extraterritorial | 2023 |
| Jump CUT Productions Limited | Information & communication | 2002 |
| Junk Wizards Limited | Water & waste | 2024 |
| Jupiter Travel Ltd | Transport & logistics | 2025 |
| Jupiter Wine Trading Limited | Administrative & support | 2018 |
| JVW Health and Protection Ltd | Financial services | 2023 |
| JWA Electrical Engineering Limited | Professional & scientific | 2016 |
| JWA Property Ltd | Real estate | 2022 |
| K & L Freight Holdings Limited | Financial services | 2019 |
| K & L Freight Limited | Transport & logistics | 1990 |
| K & L Property Limited | Real estate | 2016 |
| K R North Limited | Other services | 2016 |
| K&A Contracting Services Ltd | Construction | 2025 |
| K2 Nexus Holdings Ltd | Wholesale & retail | 2024 |
| K2 Property Holdings Ltd | Real estate | 2025 |
| K4 Reactive Ltd | Administrative & support | 2026 |
| KA Recruitment Limited | Administrative & support | 2013 |
| Kakateeya Consulting Services Ltd | Information & communication | 2011 |
| Kaleidoscope Learning Trust | Education | 2013 |
| Kang Pacific Group Limited | Wholesale & retail | 2024 |
| KAP Property Holdings Limited | Real estate | 2020 |
| Kargo Records UK Ltd | Information & communication | 2013 |
| Kart Circuit Developments Limited | Arts & recreation | 2005 |
| Karven Engineering Design Services Ltd | Professional & scientific | 2017 |
| Kathay Solutions Ltd | Real estate | 2021 |
| Katic Limited | Financial services | 2023 |
| Katie Carson Driving School Ltd | Education | 2024 |
| Katsol Resources Ltd | Information & communication | 2023 |
| Katy Galloway Productions Ltd | Arts & recreation | 2021 |
| Katy Nails and Spa Ltd | Other services | 2020 |
| Kauai Holdings Ltd | Real estate | 2021 |
| Kavell Holdings Ltd | Real estate | 2025 |
| KAY & Cowdell Limited | Wholesale & retail | 1950 |
| KB Haulage (Northwich) Limited | Transport & logistics | 2009 |
| KC Aviation LLP | | 2020 |
| KC Bookkeeping Ltd | Professional & scientific | 2017 |
| KD Medcomms Ltd | Professional & scientific | 2023 |
| Keiron O'Sullivan Limited | Construction | 2014 |
| Kell Construction Management Services Limited | Construction | 2014 |
| Kelly's of Cheshire Removals & Storage Ltd | Transport & logistics | 2016 |
| Kenwright Consultants Limited | Professional & scientific | 2010 |
| Kepla Digital Ltd | Professional & scientific | 2019 |
| Keppel Gate Holdings Limited | Financial services | 2020 |
| Kerry BFB Consulting Ltd | Professional & scientific | 2024 |
| Kestlo UK Limited | Wholesale & retail | 2026 |
| Kestrel Education Consultancy Ltd | Education | 2023 |
| Kettleborough Property Investments Limited | Households | 2022 |
| Key Project Solutions Ltd | Information & communication | 2017 |
| Key Properties (Cheshire) Limited | Real estate | 1999 |
| Keyline Associates Limited | Information & communication | 1994 |