| JD Construction (Nottingham) Limited | Construction | 2010 |
| JD Developments East Midlands Limited | Construction | 2018 |
| JD Developments Nottingham Ltd | Construction | 2024 |
| JD Events 2022 Limited | Administrative & support | 2023 |
| JD Outdoor Property Management Ltd | Administrative & support | 2015 |
| JD Premium Properties Limited | Real estate | 2023 |
| JD Transport Ltd | Construction | 2014 |
| JDC Technology Ltd | Construction | 2015 |
| JDF Heating Limited | Construction | 2012 |
| JDF Ventures Ltd | Real estate | 2025 |
| JDL Asset Management Ltd | Transport & logistics | 2023 |
| JDL Management Services Limited | Professional & scientific | 2019 |
| JDL Medical Limited | Health & social care | 2023 |
| JDL Motorcycles Ltd | Other services | 2018 |
| JDL Pro Ltd | Wholesale & retail | 2018 |
| JDL Property Limited | Real estate | 2016 |
| JDM Construction Notts Limited | Construction | 2022 |
| JDM Medicines Optimisation Ltd | Health & social care | 2020 |
| JDM Trade Ltd | Water & waste | 2025 |
| Jdmo Ltd | Real estate | 2016 |
| Jdpm Ltd | Real estate | 2014 |
| Jdrj POP UP Limited | Wholesale & retail | 2025 |
| JDS Barber & Beauty Ltd | Other services | 2025 |
| JDS Leisure Guys Ltd | Real estate | 2026 |
| JDS Security Systems Ltd | Other services | 2011 |
| Jdsp Healthcare Ltd | Health & social care | 2022 |
| JDT Plumbers Limited | Construction | 2025 |
| JDU Logistics Limited | Transport & logistics | 2019 |
| JDV Ventures Ltd | Administrative & support | 2021 |
| JDW Building Services Ltd | Construction | 2020 |
| JE Micropubs Ltd | Hospitality | 2025 |
| JEA Management Consulting Limited | Professional & scientific | 2023 |
| Jeba Property Limited | Real estate | 2022 |
| JEC (UK) Limited | Construction | 2013 |
| JED Services Limited | Other services | 2005 |
| Jeejai Investments Limited | Financial services | 2006 |
| Jeeves Automotive Repair Ltd | Other services | 2019 |
| Jeeves Automotive Valeting Services Ltd | Other services | 2019 |
| Jeeves Towing Assistant Ltd | Wholesale & retail | 2018 |
| Jeeves Transportation Limited | Construction | 2019 |
| Jeff Garratt Properties Limited | Extraterritorial | 2008 |
| Jeff Productions Ltd | Professional & scientific | 2021 |
| Jeff Wyatt Associates Limited | Professional & scientific | 2013 |
| Jeffs & Walker Limited | Wholesale & retail | 1960 |
| Jega Grupe Ltd | Financial services | 2024 |
| Jeiga Ltd. | Information & communication | 2019 |
| Jejaji Ltd | Health & social care | 2019 |
| Jelenice Management Limited | Households | 1986 |
| Jellephish Limited | Manufacturing | 2003 |
| Jellisys Limited | Real estate | 2018 |
| Jelly Beans Day Nursery Ltd | Health & social care | 2018 |
| Jelly-Rhino Construction Limited | Construction | 2007 |
| Jellybeans Play Café Limited | Hospitality | 2025 |
| JEM Build Construction Ltd | Construction | 2017 |
| JEM Marketing Limited | Professional & scientific | 2004 |
| Jemblewren Limited | Professional & scientific | 2019 |
| Jemda Limited | Transport & logistics | 2012 |
| Jemima Mawhood Ltd | Education | 2024 |
| Jemina Homes Limited | Real estate | 2026 |
| Jemtek Ltd | Information & communication | 2020 |
| JEN & Jones Ltd | Information & communication | 2024 |
| JEN Project Group CIC | Real estate | 2025 |
| Jenco Solutions Limited | Construction | 2020 |
| Jengman Consulting Ltd. | Professional & scientific | 2014 |
| Jenika Holdings Limited | Financial services | 2023 |
| Jenjco Ltd | Information & communication | 2026 |
| Jenkin Housing Company Limited(The) | Real estate | 1946 |
| Jenkins Associates Limited | Financial services | 2003 |
| Jenko UK Ltd | Wholesale & retail | 2003 |
| Jenner Bailey Limited | Real estate | 2008 |
| Jenner Commercial Plastering Ltd | Construction | 2019 |
| Jenni French Limited | Professional & scientific | 2024 |
| Jennie Holland PR Limited | Professional & scientific | 2017 |
| Jennie Robinson Consulting Ltd | Professional & scientific | 2022 |
| Jennifer Wallis Planning Ltd | Professional & scientific | 2016 |
| Jenny Baddeley Ltd | Professional & scientific | 2012 |
| Jenny Cross Limited | Professional & scientific | 2003 |
| Jenny Digges Education Services Ltd | Professional & scientific | 2011 |
| Jenny Walsh Consulting Limited | Professional & scientific | 2011 |
| Jeom Consulting & Project Solutions Ltd | Professional & scientific | 2024 |
| Jephson Property Solutions Ltd | Real estate | 2025 |
| Jepson Gardening Services Ltd | Other services | 2012 |
| JER Investments Limited | Real estate | 2026 |
| Jerbs Education Academy Ltd | Education | 2022 |
| Jerbz Consultancy Limited | Education | 2025 |
| Jeremiah Housing Community Interest Company | Hospitality | 2012 |
| Jericho Investments Limited | Financial services | 2006 |
| Jerome UK Ltd | Health & social care | 2015 |
| Jerry Woods Ltd | Administrative & support | 2026 |
| Jersey Corporate Services (UK) Ltd | Professional & scientific | 2012 |
| Jesk Investments Ltd | Real estate | 2014 |
| Jessica Harvey Aesthetics and Training Academy Ltd | Other services | 2020 |
| Jessica Nails & Spa Ltd | Other services | 2025 |
| Jessie Bakes Cakes Ltd | Hospitality | 2020 |
| Jessney Properties Limited | Real estate | 2021 |
| Jest Investments Limited | Hospitality | 2016 |
| Jest Property Limited | Real estate | 2022 |
| Jester Games Store Ltd | Wholesale & retail | 2020 |
| Jester's Childcare Limited | Health & social care | 2003 |
| Jesus Ways International Outreach Ministry Ltd | Other services | 2019 |