| Jovijay Limited | Transport & logistics | 2025 |
| Jowett & Stone Estate Agents Ltd | Real estate | 2021 |
| Jowle Ltd | Transport & logistics | 2025 |
| Joy Best Ltd | Hospitality | 2023 |
| Joy Eatery (Leicester) Limited | Hospitality | 2025 |
| Joy Spot Ltd | Administrative & support | 2014 |
| Joyce &JOE Ltd | Health & social care | 2022 |
| Joyinst CIC | Education | 2025 |
| Joylink Healthcare Services Ltd | Health & social care | 2012 |
| Joynet IT Solutions Ltd | Information & communication | 2024 |
| Jozsef Builder Limited | Construction | 2025 |
| JP Car Wash Ltd | Other services | 2026 |
| JP Clinical Consultancy Ltd | Administrative & support | 2024 |
| JP Computer Solutions Ltd | Information & communication | 2017 |
| JP Consulting Brighton Limited | Professional & scientific | 2024 |
| JP Dhanak Enterprise Ltd | Wholesale & retail | 2018 |
| JP Efficiency Ltd | Professional & scientific | 2026 |
| JP Exterior Cleaning Services Ltd | Administrative & support | 2024 |
| JP Fleet Ltd | Transport & logistics | 2024 |
| JP Halal Limited | Manufacturing | 2022 |
| JP Haven Homes Ltd | Hospitality | 2025 |
| JP Law Ltd | Administrative & support | 2006 |
| JP Overseas Limited | Wholesale & retail | 2010 |
| JP Renovations Ltd | Construction | 2026 |
| JP Rural Services Ltd | Agriculture & fishing | 2025 |
| JP Software Solutions Ltd | Information & communication | 2018 |
| JP Tuning Leicester Ltd | Wholesale & retail | 2017 |
| JP29 Investments Limited | Real estate | 2026 |
| JP3 Solutions Ltd | Transport & logistics | 2025 |
| JPA 2021 Limited | Financial services | 2021 |
| JPA Services (Midlands) Limited | Manufacturing | 2014 |
| JPB Trans Ltd | Transport & logistics | 2021 |
| JPD Electrical Services Limited | Construction | 2015 |
| JPH Media Ltd | Information & communication | 2020 |
| JPK (Properties) Limited | Real estate | 2023 |
| JPK Care & Support Limited | Health & social care | 2025 |
| JPM Investment Holdings Limited | Real estate | 2017 |
| JPR Trustee Services Limited | Financial services | 2013 |
| JPS Investments Limited | Construction | 1992 |
| JPS Leicester Ltd | Agriculture & fishing | 2021 |
| JPS MAX Limited | Households | 2021 |
| Jpsurgical Ltd | Health & social care | 2023 |
| JPT Sales Ltd | Wholesale & retail | 2023 |
| JPV Properties Limited | Real estate | 2019 |
| Jpwolf Limited | Wholesale & retail | 2026 |
| JPZ Properties Investment Ltd | Real estate | 2023 |
| JQM Financial Planning & Investment Ltd | Financial services | 2026 |
| JR & LRS Ltd | Real estate | 2022 |
| JR Carehomes Ltd | Health & social care | 2025 |
| JR Heating Midlands Limited | Construction | 2021 |
| JR Installations (Leics) Ltd | Construction | 2010 |
| JR Investment Group Limited | Construction | 2019 |
| JR Technical Support Services Ltd | Information & communication | 2023 |
| JR Trading Limited | Transport & logistics | 2006 |
| Jr&Jc Creations Ltd | Wholesale & retail | 2026 |
| Jr&Sr Logistics Ltd | Transport & logistics | 2020 |
| JRA Group Limited | Financial services | 2025 |
| JRA Lettings Limited | Real estate | 2024 |
| JRB Housing Ltd | Real estate | 2024 |
| JRI Construction Ltd | Construction | 2017 |
| JRL Capital Holdings Limited | Financial services | 2024 |
| JRL Housing Limited | Real estate | 2024 |
| JRP Management Limited | Real estate | 2014 |
| JRS Empire Ltd | Real estate | 2025 |
| Jrvt Limited | Transport & logistics | 2016 |
| JS & HK Properties Limited | Real estate | 2017 |
| JS & MR Spencer & Sons Ltd | Other services | 2025 |
| JS Autoservices Leicester Ltd | Wholesale & retail | 2024 |
| JS Biring Properties Limited | Real estate | 2025 |
| JS Brickwork Ltd | Financial services | 2020 |
| JS Brothers Transport Ltd | Transport & logistics | 2021 |
| JS Building Merchants Ltd | Construction | 2025 |
| JS Cars Ltd | Wholesale & retail | 2024 |
| JS Cuisine Ltd | Hospitality | 2024 |
| JS Developments Ltd | Real estate | 2026 |
| JS Freightways Ltd | Transport & logistics | 2020 |
| JS GAS and Plumbing Services Ltd | Construction | 2022 |
| JS Homes and Property Ltd | Real estate | 2023 |
| JS JOB Sorted Ltd | Administrative & support | 2025 |
| JS Legal Services Limited | Professional & scientific | 2025 |
| JS Photobooths Ltd | Professional & scientific | 2025 |
| JS Procurement Services Ltd | Professional & scientific | 2019 |
| JS Quality Improvement Consultancy Ltd | Professional & scientific | 2019 |
| JS Storage Ltd | Real estate | 2025 |
| JS Superbikes Ltd | Wholesale & retail | 2025 |
| JS TRANS4U Ltd | Transport & logistics | 2025 |
| JS Woodwork Ltd | Manufacturing | 2021 |
| JSA Couriers Limited | Transport & logistics | 2024 |
| JSB21 Limited | Manufacturing | 2020 |
| JSC Care Ltd | Health & social care | 2023 |
| JSC Global Ltd | Administrative & support | 2019 |
| Jsdk Investment Properties Ltd | Real estate | 2023 |
| Jsdt Ltd | Wholesale & retail | 2024 |
| JSG Ventures Ltd | Wholesale & retail | 2020 |
| JSJ Eyecare Limited | Health & social care | 2026 |
| JSJ Projects Limited | Wholesale & retail | 1998 |
| JSK & Transport Ltd | Transport & logistics | 2022 |
| JSK Leisure Limited | Hospitality | 2018 |
| JSK M Properties Ltd | Real estate | 2024 |
| JSK Pro Ltd | Real estate | 2020 |