| JIT Training Ltd | Extraterritorial | 2012 |
| Jitao Limited | Wholesale & retail | 2026 |
| Jitsaw Group Ltd | Real estate | 2025 |
| Jiva Capital Advisors Limited | Professional & scientific | 2023 |
| Jiva Capital Partners Limited | Financial services | 2008 |
| Jiva Commerce Ltd | Wholesale & retail | 2025 |
| Jiva Energy Limited | Financial services | 2020 |
| Jiva Studios Limited | Manufacturing | 2025 |
| Jivaji Auto Factors Limited | Wholesale & retail | 2010 |
| Jivomir Ltd | Transport & logistics | 2015 |
| Jiwa World Limited | Hospitality | 2024 |
| Jiya Sweets Limited | Wholesale & retail | 2024 |
| Jiya's Restaurant & Catering Ltd | Hospitality | 2024 |
| Jiyan Properties Limited | Real estate | 2026 |
| JJ 101 Limited | Real estate | 2023 |
| JJ Accountants Services Limited | Professional & scientific | 2025 |
| JJ Building Material Plumbing and Electrical Suppliers Limited | Wholesale & retail | 2025 |
| JJ Energy Limited | Information & communication | 2021 |
| JJ Events & Entertainment Ltd | Arts & recreation | 2022 |
| JJ Global Exim UK Ltd | Wholesale & retail | 2025 |
| JJ Home Credit Ltd | Financial services | 2017 |
| JJ Logistics U.K. Ltd | Transport & logistics | 2025 |
| JJ Management Ltd | Professional & scientific | 2025 |
| JJ Nindason Properties Ltd | Real estate | 2024 |
| JJ Student Investments Limited | Real estate | 2018 |
| JJ Turkish Barbers Ltd | Other services | 2025 |
| JJ Vision Care Ltd | Health & social care | 2025 |
| JJ Waste Removal and Landscaping Services Ltd | Water & waste | 2023 |
| JJ ZAK Ltd | Construction | 2019 |
| Jj's Pizza BHM Ltd | Hospitality | 2019 |
| JJ1 Takeaway Limited | Hospitality | 2024 |
| JJA & Sons Limited | Construction | 2011 |
| Jjas Investment Group Ltd | Professional & scientific | 2025 |
| JJB Solutions (Midlands) Limited | Construction | 2024 |
| JJC Health Care Ltd | Health & social care | 2016 |
| JJC Hull Limited | Professional & scientific | 2024 |
| JJC Takeaway Ltd | Hospitality | 2025 |
| JJD Constructions U.K. Ltd | Construction | 2025 |
| JJE Connections Limited | Administrative & support | 2019 |
| Jjhp Ltd | Wholesale & retail | 2017 |
| JJI Consultancy Limited | Wholesale & retail | 2023 |
| Jjjs Trans Limited | Transport & logistics | 2016 |
| JJK Assets Limited | Financial services | 2021 |
| JJK Building Work Limited | Construction | 2024 |
| JJK Dhariwal Limited | Real estate | 2019 |
| JJK Properties Ltd | Real estate | 2023 |
| JJK Property Investment Ltd | Real estate | 2010 |
| JJK Property Management Limited | Real estate | 2018 |
| Jjkd Consultancy Limited | Professional & scientific | 2022 |
| JJL Contractors Ltd | Administrative & support | 2025 |
| Jjlc Investments Limited | Real estate | 2026 |
| Jjlc Trading Limited | Wholesale & retail | 2023 |
| JJM Healy Ltd | Real estate | 2022 |
| JJM Sargeant Limited | Households | 2016 |
| JJO Ventures Ltd | Real estate | 2020 |
| JJP Contractors Limited | Administrative & support | 2016 |
| JJP Interior Renovations Ltd | Construction | 2025 |
| JJR Northern Properties Ltd | Real estate | 2020 |
| Jjresolves Ltd | Transport & logistics | 2025 |
| JJS Community Housing Ltd | Hospitality | 2025 |
| JJS Corporate Limited | Real estate | 2021 |
| JJS Estates Ltd | Financial services | 2020 |
| JJS Flooring Services Ltd | Wholesale & retail | 2020 |
| JJS Media Hire Limited | Information & communication | 2017 |
| JJS Supermarket Ltd | Wholesale & retail | 2025 |
| Jjsn Property Investments Ltd | Real estate | 2026 |
| Jjspice Kitchen Ltd | Hospitality | 2021 |
| Jjstech Ltd | Wholesale & retail | 2025 |
| Jjuce Ltd | Wholesale & retail | 2020 |
| JK Arthroplasty Ltd | Health & social care | 2025 |
| JK Birmingham Property Limited | Real estate | 2026 |
| JK Collection Ltd | Wholesale & retail | 2013 |
| JK Consultancy (Midlands) Ltd. | Construction | 2013 |
| JK Convenience Ltd | Wholesale & retail | 2022 |
| JK Digital Services Ltd | Construction | 2013 |
| JK Driver Solutions Limited | Transport & logistics | 2015 |
| JK Driveways Ltd | Construction | 2022 |
| JK Driving Experts Ltd | Transport & logistics | 2025 |
| JK Edwards Brickwork Contractors Ltd | Construction | 2019 |
| JK Endodiab Ltd | Health & social care | 2025 |
| JK Foods 24-7 Ltd | Wholesale & retail | 2025 |
| JK Group of Companies Limited | Financial services | 2021 |
| JK Hazell Gray Property Ltd | Real estate | 2024 |
| JK Heating & Plumbing Solutions Ltd | Construction | 2026 |
| JK Homeopathy Limited | Health & social care | 2021 |
| JK Payroll Services Limited | Professional & scientific | 2019 |
| JK Properties (Midlands) Ltd | Real estate | 2025 |
| JK Support Services Ltd | Information & communication | 2023 |
| JK Taverns Limited | Hospitality | 2026 |
| JK Textiles Ltd | Wholesale & retail | 2003 |
| JK Trades Ltd | Wholesale & retail | 2026 |
| Jk&Co Consultancy Ltd | Administrative & support | 2021 |
| Jkaur Investments Ltd | Real estate | 2023 |
| Jkazama Ltd | Transport & logistics | 2025 |
| JKB Automotive Ltd | Wholesale & retail | 2019 |
| JKB Haulage Ltd | Transport & logistics | 2024 |
| JKB Medical Ltd | Health & social care | 2022 |
| JKB90 Ltd | Health & social care | 2025 |
| JKBARBERS5911 Ltd | Other services | 2026 |
| Jkbk Limited | Wholesale & retail | 2024 |