| JDL Leisure Limited | Other services | 2003 |
| JDL Ware Limited | Transport & logistics | 2020 |
| JDM Car Sales Ltd | Wholesale & retail | 2025 |
| JDM Logistics Ltd | Transport & logistics | 2025 |
| JDN Logistics Ltd | Transport & logistics | 2024 |
| Jdproperty SPV Ltd | Real estate | 2026 |
| Jdra Investments Limited | Financial services | 2025 |
| Jdran Enterprises Ltd | Information & communication | 2026 |
| JDS Holdings (West Midlands) Limited | Professional & scientific | 2018 |
| JDS Midlands Ltd | Administrative & support | 2020 |
| JDS61 Ltd | Administrative & support | 2023 |
| Jdsocialhousing Ltd | Real estate | 2025 |
| JDT Enterprise(Uk) Ltd | Wholesale & retail | 2021 |
| JDT Transport Ltd | Transport & logistics | 2018 |
| JDW Freight Limited | Transport & logistics | 2015 |
| JDW Locksmith and Enforcement Ltd | Administrative & support | 2015 |
| JDW Property Development Ltd | Real estate | 2025 |
| Jdweeks Ltd | Other services | 2016 |
| Jdxtherapy Ltd | Health & social care | 2023 |
| JE & C Ltd | Hospitality | 2026 |
| JE + 1 Limited | Extraterritorial | 2013 |
| JE Contracting Limited | Construction | 2019 |
| JE Residences Ltd | Real estate | 2025 |
| JE2024 Ltd | Real estate | 2024 |
| JEA Investments Ltd | Real estate | 2025 |
| Jean Ellis Limited | Information & communication | 2018 |
| JEANCEL7 Limited | Health & social care | 2015 |
| Jeanette James Limited | Hospitality | 2014 |
| Jeansdrop Ltd | Wholesale & retail | 2023 |
| Jeanskin Limited | Real estate | 2016 |
| Jeavons Eurotir Limited | Transport & logistics | 1986 |
| Jebs & Heart Ltd | Health & social care | 2024 |
| JEC Food Services Ltd | Hospitality | 2026 |
| Jecom & Co Accountancy Services Limited | Financial services | 2011 |
| JED Black's Bakery Ltd | Manufacturing | 2021 |
| JED TM Services Ltd | Construction | 2018 |
| Jee's Hartshill Limited | Extraterritorial | 1898 |
| Jeekar Ltd | Financial services | 2025 |
| Jeelani Trading UK Ltd | Wholesale & retail | 2025 |
| Jeep Estates Ltd | Real estate | 2024 |
| Jeera Chester Ltd | Hospitality | 2025 |
| Jeet Brothers Limited | Transport & logistics | 2023 |
| Jeet Building & Construction Ltd | Construction | 2025 |
| Jeet Dream Builders Ltd | Construction | 2025 |
| Jeet Investments Ltd | Real estate | 2023 |
| Jeet's Accessories Ltd | Administrative & support | 2023 |
| Jeeves & Co Holdings Limited | Real estate | 2017 |
| Jeeves & Co Limited | Information & communication | 1996 |
| Jeevz.Co Limited | Wholesale & retail | 2026 |
| JEF Property Limited | Real estate | 2020 |
| Jefcon Auto Ltd | Administrative & support | 2026 |
| Jeff & PO (UK) Limited | Real estate | 2020 |
| Jeff Vehicles Limited | Professional & scientific | 2014 |
| Jeff's Premium Halal Ltd | Wholesale & retail | 2026 |
| Jeff's Premium Halal Meat Limited | Wholesale & retail | 2023 |
| Jefferys International Company (UK) Limited | Wholesale & retail | 2018 |
| Jefftek Limited | Administrative & support | 2015 |
| JEG Medical Services Ltd | Health & social care | 2024 |
| Jegka Limited | Real estate | 2020 |
| Jegol Extra Manpower Ltd | Transport & logistics | 2019 |
| Jegood Ltd | Transport & logistics | 2019 |
| JEH Ltd | Other services | 2021 |
| JEH Marketing Ltd | Professional & scientific | 2012 |
| JEI Brands Limited | Wholesale & retail | 2006 |
| Jekada Limited | Real estate | 2025 |
| Jeke Group Ltd | Wholesale & retail | 2019 |
| Jekyll & Hyde Eyewear Limited | Wholesale & retail | 2022 |
| Jelco Ltd | Construction | 2018 |
| Jelen Leisure Ltd | Arts & recreation | 2018 |
| Jelen Lifestyle Limited | Financial services | 2025 |
| Jeleni Limited | Administrative & support | 2019 |
| Jellifish Ltd | Wholesale & retail | 2023 |
| Jellyblue Limited | Real estate | 2013 |
| Jellyfish Balloons Ltd | Wholesale & retail | 1988 |
| Jellyfish Decor Ltd | Wholesale & retail | 2019 |
| Jellyfish Recruitment Ltd | Administrative & support | 2023 |
| Jelohim Associates Limited | Health & social care | 2013 |
| JEM & JEM Properties Limited | Real estate | 2023 |
| JEM Coaching & Consultancy Limited | Professional & scientific | 2025 |
| JEM International Management Limited | Real estate | 2016 |
| JEM PH Enterprises Ltd | Financial services | 2022 |
| JEM PH Resources Ltd | Administrative & support | 2024 |
| Jemaylsamdine Estates Ltd | Real estate | 2026 |
| Jemaylsamdine Ltd | Real estate | 2024 |
| Jemek Solicitors Limited | Professional & scientific | 2016 |
| Jemfam Limited | Health & social care | 2019 |
| Jemima Medical Ltd | Health & social care | 2019 |
| Jemma James Ltd | Professional & scientific | 2024 |
| Jemplus Ltd | Real estate | 2018 |
| Jemscout Ltd | Professional & scientific | 2023 |
| Jemz Healthcare Ltd | Health & social care | 2022 |
| Jemz Nailz Ltd | Other services | 2019 |
| Jena (UK) Limited | Manufacturing | 1973 |
| Jenan Areej Health Limited | Health & social care | 2024 |
| Jendeburgh Holdings Ltd | Financial services | 2025 |
| Jeng END Productions Limited | Administrative & support | 2024 |
| Jenggo Ltd | Other services | 2019 |
| Jengineering Ltd | Professional & scientific | 2024 |
| Jengo Wholesale Ltd | Wholesale & retail | 2016 |
| Jenifah Mushayi Ltd | Public administration | 2025 |