| Jupiter Digital Ltd | Wholesale & retail | 2020 |
| Jurad Ltd | Construction | 2010 |
| Juss Investments Ltd | Real estate | 2022 |
| Just 1 More Limited | Financial services | 2014 |
| Just 2 U Limited | Manufacturing | 2018 |
| Just Bathrooms and Panels Limited | Construction | 1996 |
| Just Bell Limited | Information & communication | 2024 |
| Just Blanks Ltd | Wholesale & retail | 2023 |
| Just Buy IT Ltd | Wholesale & retail | 2022 |
| Just Clothing Limited | Manufacturing | 2016 |
| Just EMB Limited | Wholesale & retail | 2023 |
| Just Engineering Services Ltd | Information & communication | 2020 |
| Just Fair Trade Limited | Wholesale & retail | 2000 |
| Just Falafel Ltd | Hospitality | 2025 |
| Just for Public Limited | Other services | 2013 |
| Just Kids Golf Ltd | Wholesale & retail | 2025 |
| Just Maintain Ltd | Other services | 2025 |
| Just ME Wanderlust Ltd | Information & communication | 2020 |
| Just My Luck Ltd | Information & communication | 2025 |
| Just Nails Beauty Ltd | Other services | 2022 |
| Just Noise Limited | Professional & scientific | 2020 |
| Just One MAN Ltd | Manufacturing | 2025 |
| Just RAW MBK Ltd | Wholesale & retail | 2022 |
| Just Roofing & Sons Ltd | Construction | 2025 |
| Just Roofing (Leicester) Limited | Construction | 2000 |
| Just Smile Cosmetics Limited | Wholesale & retail | 2025 |
| Just Sports (Leics) Ltd | Arts & recreation | 2009 |
| Just the Filling Ltd | Hospitality | 2015 |
| Just the Munch Ltd | Hospitality | 2020 |
| Just the VEG Ltd | Hospitality | 2025 |
| Just Wraps Ltd | Hospitality | 2025 |
| Just-B Behaviour and Therapeutic Services Ltd | Administrative & support | 2025 |
| Just.Tea Ltd | Hospitality | 2021 |
| JUST365 Ltd | Transport & logistics | 2019 |
| JUST4RETAIL Limited | Manufacturing | 2016 |
| Justea Ltd | Hospitality | 2024 |
| Justgogo Ltd | Health & social care | 2024 |
| Justice Clean & Maintenance Ltd | Administrative & support | 2020 |
| Justified Limited | Wholesale & retail | 2022 |
| Justin Computers Trading Ltd | Other services | 2026 |
| Justprint Solutions Ltd | Manufacturing | 2026 |
| Justrent-Uk Limited | Other services | 2018 |
| Justsaypleaselogistics Ltd | Transport & logistics | 2025 |
| Jutla Estates Limited | Real estate | 2020 |
| Jutla Media Limited | Manufacturing | 2018 |
| Jutla Properties & Estates Limited | Real estate | 2026 |
| Juuicebar Ltd | Hospitality | 2020 |
| Juvida Clinics Ltd | Health & social care | 2015 |
| JVB Developments Limited | Construction | 1998 |
| JVC Properties Limited | Real estate | 2024 |
| Jvdd Consultancy Ltd. | Administrative & support | 2015 |
| JVG International Limited | Wholesale & retail | 2017 |
| JVK Homes Ltd | Real estate | 2021 |
| Jvlg Group Limited | Real estate | 2022 |
| JVR Nurseries Ltd | Education | 2022 |
| JVR Property Ltd | Real estate | 2022 |
| JVS Leicester Limited | Construction | 2016 |
| JW Automation Services Limited | Professional & scientific | 2017 |
| JW Car Body Shop Ltd | Wholesale & retail | 2018 |
| JW Care Services (UK) Ltd | Health & social care | 2014 |
| JW Hygienist & Therapist Limited | Health & social care | 2020 |
| JW Sports Academy Ltd | Education | 2018 |
| JW Vehicle Services Ltd | Wholesale & retail | 2025 |
| JWA CNC Precision Limited | Manufacturing | 2000 |
| JWB Investments Ltd | Financial services | 2011 |
| Jwdata Ltd | Information & communication | 2023 |
| JWH Financial Limited | Financial services | 2023 |
| JWP Marketing Ltd | Administrative & support | 2010 |
| JWR Auto Electronics Limited | Manufacturing | 2005 |
| JWS Cleaning Service Limited | Administrative & support | 2022 |
| JXW Development Consultants Limited | Professional & scientific | 2010 |
| Jyot Couriers Ltd | Transport & logistics | 2025 |
| Jyoti Inc Limited | Wholesale & retail | 2025 |
| Jyoti VM Ltd | Wholesale & retail | 2025 |
| JYR Group Ltd | Wholesale & retail | 2024 |
| JYS Consulting Ltd | Professional & scientific | 2015 |
| JZ Global Ltd | Wholesale & retail | 2025 |
| K & a Audio Systems UK Ltd | Manufacturing | 2014 |
| K & a Midlands Ltd | Real estate | 2025 |
| K & a Property Group Ltd | Real estate | 2019 |
| K & B Properties Management Limited | Real estate | 2024 |
| K & D Embroidery & Printing Ltd | Professional & scientific | 2012 |
| K & D Projects Ltd | Construction | 2020 |
| K & K Hatton Limited | Wholesale & retail | 2010 |
| K & K Hatton Restorations Limited | Extraterritorial | 2022 |
| K & K Healthcare Limited | Wholesale & retail | 2007 |
| K & K Superstore Ltd | Wholesale & retail | 2017 |
| K & L Carpets & Flooring Limited | Wholesale & retail | 2021 |
| K & M Autos Limited | Wholesale & retail | 2015 |
| K & NG Properties Ltd | Real estate | 2024 |
| K & T Fabrications Ltd | Manufacturing | 2015 |
| K a Holt Consulting Limited | Professional & scientific | 2004 |
| K a S Homes Limited | Real estate | 2021 |
| K and S Entertainment Ltd | Hospitality | 2020 |
| K Arms Whitwick Limited | Hospitality | 2024 |
| K B Builders Services Ltd | Construction | 2025 |
| K B Holdings (Leicester) Ltd | Financial services | 2019 |
| K Birdi Ltd | Health & social care | 2020 |
| K Boss Ltd | Households | 2021 |
| K C O'Sullivan Electrical Contractors Ltd | Construction | 2019 |