| JJP Supply Chain Solutions Limited | Real estate | 2018 |
| Jjproperties Warrington Ltd | Real estate | 2021 |
| Jjrc Solutions Ltd | Other services | 2019 |
| JJW Jewellery Limited | Wholesale & retail | 2024 |
| JK & L Food Limited | Hospitality | 2023 |
| JK & L Holdings Ltd | Real estate | 2023 |
| JK & L Properties Ltd | Construction | 2023 |
| JK Berry Enterprises Ltd | Professional & scientific | 2026 |
| JK Quality Services Limited | Administrative & support | 2025 |
| JKA Studio Limited | Professional & scientific | 2021 |
| Jkara Trading Ltd | Wholesale & retail | 2023 |
| JKB Holdings Limited | Financial services | 2021 |
| JKC Aviation Limited | Professional & scientific | 2018 |
| JKC Property Limited | Real estate | 2021 |
| Jkcan Holdings Limited | Financial services | 2019 |
| Jkcw Holdings Ltd | Financial services | 2023 |
| JKK Consultancy Ltd | Professional & scientific | 2023 |
| JKK12 Ltd | Financial services | 2019 |
| JKL Site Services Limited | Administrative & support | 2012 |
| JKM Digital Engineering Limited | Professional & scientific | 2017 |
| JKO Pipefitting Limited | Construction | 2016 |
| JKS Bolton Shotokan Karate Limited | Education | 2024 |
| Jkscience Limited | Professional & scientific | 2023 |
| JL Craig Solutions Ltd | Information & communication | 2011 |
| JL Fire Tech Management Limited | Professional & scientific | 2018 |
| JL Jones Consulting Limited | Professional & scientific | 2018 |
| JL Kitchens & Interiors Ltd | Manufacturing | 2023 |
| JL Premium Contracts Ltd | Construction | 2024 |
| JL Premium Property Ltd | Real estate | 2019 |
| JL Signature Cleaning Ltd | Administrative & support | 2026 |
| JLA Property Limited | Real estate | 2021 |
| JLA Real Estate Ltd | Real estate | 2025 |
| JLA Services Ltd | Transport & logistics | 2025 |
| JLB Estates Ltd | Real estate | 2025 |
| JLC Operations Limited | Information & communication | 2012 |
| JLE Plumbing, Heating & GAS Services Limited | Construction | 2020 |
| JLH (Eyebrows) Limited | Other services | 2015 |
| JLJ Hair & Beauty Limited | Other services | 2011 |
| JLJ Hospitality Limited | Professional & scientific | 2021 |
| JLK Site Services Ltd | Construction | 2019 |
| JLM Asset Holdings Limited | Real estate | 2022 |
| JLM Education Consulting Ltd | Information & communication | 2022 |
| JLM Investment Holdings Limited | Financial services | 2022 |
| JLN Psychological Services Ltd | Health & social care | 2018 |
| JLP Planning Limited | Administrative & support | 2013 |
| JLR Fire Ltd | Administrative & support | 2024 |
| JLR Investments Limited | Administrative & support | 2020 |
| JLR Safety Ltd | Construction | 2024 |
| JLR Technical Services Limited | Professional & scientific | 2013 |
| Jlsk Limited | Administrative & support | 2011 |
| JLT Electrical Services Ltd | Construction | 2024 |
| JLW Access Solutions Limited | Professional & scientific | 2026 |
| JM Aesthetics (Warrington) Ltd | Health & social care | 2019 |
| JM Commercial Services Ltd | Professional & scientific | 2022 |
| JM Couriers Warrington Limited | Transport & logistics | 2025 |
| JM Engineering Innovation Ltd | Construction | 2025 |
| JM Home Improvements NW Ltd | Construction | 2020 |
| JM Project Engineering Ltd | Professional & scientific | 2017 |
| JM Technical Solutions Ltd | Professional & scientific | 2026 |
| JM3K Ltd | Real estate | 2026 |
| JM9 Motor Ltd | Wholesale & retail | 2025 |
| JMA Lettings Ltd | Real estate | 2024 |
| JMA Project Management Limited | Construction | 2019 |
| Jmap Limited | Administrative & support | 2021 |
| JMB Customer Service Specialist Limited | Administrative & support | 2015 |
| Jmbz Ltd | Other services | 2019 |
| JMC Finance Solutions Ltd | Administrative & support | 2024 |
| Jmcr Mechanical Design Ltd | Administrative & support | 2026 |
| Jmeb Medical Ltd | Health & social care | 2024 |
| JMF Consultancy and Training Limited | Professional & scientific | 2019 |
| JMF Planning Ltd | Professional & scientific | 2026 |
| JMG Consulting Group Limited | Information & communication | 2025 |
| Jmgk Properties Limited | Real estate | 2020 |
| JMJ IT Consultancy Limited | Administrative & support | 2016 |
| JML Global Limited | Professional & scientific | 2023 |
| JML Pallets & Recycling Limited | Administrative & support | 2025 |
| JML Site Management Limited | Professional & scientific | 2014 |
| Jmnprinters Ltd | Wholesale & retail | 2017 |
| JMP Dent Limited | Real estate | 2024 |
| JMP Project and BIM Management Services Ltd | Administrative & support | 2017 |
| JMP Radiology Reporting Limited | Professional & scientific | 2017 |
| JMS Commercial Services Limited | Professional & scientific | 2013 |
| JMS Cricket Limited | Arts & recreation | 2010 |
| JMS Planning Services Limited | Administrative & support | 2008 |
| Jmsprojectmanagement Ltd | Professional & scientific | 2015 |
| Jmuk Engineering Limited | Wholesale & retail | 2018 |
| JMW Geotechnical Limited | Construction | 2019 |
| JN Quality Inspections Ltd | Administrative & support | 2025 |
| JN Street Investments Ltd | Real estate | 2025 |
| JN Street Properties Ltd | Real estate | 2025 |
| Jnc.Property Ltd | Households | 2024 |
| Jngr Consultants Limited | Professional & scientific | 2015 |
| Jnhengineering Ltd | Professional & scientific | 2022 |
| JNI Services Ltd | Real estate | 2025 |
| JNR Services Ltd | Transport & logistics | 2025 |
| JNS Investments MCR Ltd | Real estate | 2024 |
| JNV Jointing Ltd | Administrative & support | 2026 |
| JO Baren Eyewear Ltd | Wholesale & retail | 2021 |
| JO Joe's Ltd | Hospitality | 2025 |
| JO Spirits Ltd | Wholesale & retail | 2025 |