| Jenni Dunman Ltd | Other services | 2020 |
| Jera Consultancy Ltd | Information & communication | 2017 |
| Jera Estates Ltd | Real estate | 2022 |
| Jeremy's Wish Foundation | Financial services | 2019 |
| Jerk N Jollof Bar N Grill Ltd | Hospitality | 2025 |
| Jerk N Jollof Holdings Limited | Financial services | 2025 |
| Jesskwes Safecare Limited | Health & social care | 2018 |
| JEY JEY Food and Wine Limited | Wholesale & retail | 2025 |
| JFD Developments Ltd | Construction | 2011 |
| JG Performance Coach Ltd | Health & social care | 2024 |
| JHA Consulting Limited | Administrative & support | 2008 |
| JHL Marketing Limited | Wholesale & retail | 2020 |
| Jilani Estates Limited | Real estate | 2025 |
| JIM Hickey Props Ltd | Professional & scientific | 2022 |
| Jinlong International Limited | Transport & logistics | 2016 |
| Jintech Ltd | Information & communication | 2009 |
| Jintech Properties Limited | Real estate | 2017 |
| Jishin Niwa Limited | Extraterritorial | 2014 |
| Jivan Limited | Real estate | 2025 |
| JJ Autocentre Ltd | Wholesale & retail | 2021 |
| JJ Building and Decorating London Ltd | Construction | 2024 |
| JJ Travels and Tours Ltd | Administrative & support | 2026 |
| Jkaa Ltd | Real estate | 2017 |
| Jlgelite Consulting Services Limited | Construction | 2022 |
| Jlls Properties Ltd | Real estate | 2020 |
| JLV Property Investments Ltd | Real estate | 2025 |
| JM and Sons Services Ltd | Construction | 2016 |
| JMD Accounting Services Ltd | Professional & scientific | 2023 |
| JMD Wealth Ltd | Real estate | 2023 |
| JMP Hospitality Consulting Ltd | Professional & scientific | 2023 |
| JMS Thinktank Ltd | Education | 2023 |
| Joanna Barzycki Ltd | Professional & scientific | 2018 |
| Jobref Ltd | Other services | 2014 |
| Johan Court Services Management Ltd | Households | 2023 |
| John Dempsey Enterprises Limited | Hospitality | 2008 |
| John Warren Consultancy Ltd | Education | 2016 |
| Joint and Spine Ltd | Health & social care | 2022 |
| JON Robyns Ltd | Arts & recreation | 2018 |
| Jope Consultancy Ltd | Professional & scientific | 2018 |
| Jose Mathew Ltd | Information & communication | 2016 |
| Joseph Hardy & Company Ltd | Professional & scientific | 2019 |
| Joshyabide Ltd | Wholesale & retail | 2018 |
| JRM French Interiors Ltd | Wholesale & retail | 2016 |
| JRT (PVT) Limited | Hospitality | 2022 |
| JS Residential Property Services Ltd | Households | 2025 |
| JSP Engineering &Strategic Consultancy Limited | Professional & scientific | 2026 |
| Jsrd Cornerstone Investments Ltd | Real estate | 2025 |
| JSV Consulting Ltd | Professional & scientific | 2021 |
| JTS Scaffolding Ltd | Construction | 2019 |
| Jubilee Enterprises (UK) Ltd | Financial services | 2013 |
| Jude Fragrances Ltd | Wholesale & retail | 2019 |
| Jufa Natural and Organic Limited | Wholesale & retail | 2013 |
| Juici Jerk Express Limited | Wholesale & retail | 2025 |
| Juliaant Education Development ( UK ) Company Limited | Education | 2012 |
| JUS Entertainment Ltd | Hospitality | 2026 |
| JUS Thai Ltd | Hospitality | 2023 |
| Just Electronics Limited | Manufacturing | 2009 |
| Just Rhoda Ltd | Arts & recreation | 2021 |
| Just US Mortgages Limited | Extraterritorial | 2011 |
| Justcallpaul Ltd | Administrative & support | 2025 |
| Justdoit Properties Ltd | Real estate | 2020 |
| Justice for YOU Limited | Professional & scientific | 2012 |
| JUSTICE-4-U Limited | Professional & scientific | 2012 |
| JW Eternity Ltd | Wholesale & retail | 2024 |
| JZ Trading Ltd | Wholesale & retail | 2019 |
| JZO Enterprises Ltd | Wholesale & retail | 2025 |
| K K B Properties Investment Ltd | Real estate | 2018 |
| K T Partnership Limited | Financial services | 2010 |
| K-9REHABILITATION Limited | Education | 2016 |
| K.F.Coomber Plumbing and Heating Ltd | Construction | 2013 |
| K.M.P Drylining Limited | Construction | 2017 |
| K.V.V. Executive Management Ltd | Professional & scientific | 2024 |
| K2 Housing Limited | Real estate | 2021 |
| K2S Consulting Ltd | Information & communication | 2014 |
| K3A & Ltd | Wholesale & retail | 2025 |
| Kaass Limited | Information & communication | 2019 |
| Kaav Consulting Services Limited | Information & communication | 2016 |
| Kadtronex Ltd | Construction | 2017 |
| Kadura Properties Limited | Real estate | 2021 |
| Kaizen 6 Digital Solutions Limited | Professional & scientific | 2015 |
| Kajish Retail Ltd | Wholesale & retail | 2026 |
| Kalabash HUT Food Distribution Ltd | Hospitality | 2021 |
| Kale Contracts Ltd | Administrative & support | 2025 |
| Kalm GAS & Plumbing Ltd | Construction | 2021 |
| Kamalawathy Capital Ltd | Professional & scientific | 2024 |
| Kamble Kitchen Ltd | Hospitality | 2023 |
| Kamble Ltd | Hospitality | 2025 |
| Kaments Limited | Real estate | 2018 |
| Kamto Consulting Limited | Professional & scientific | 2014 |
| Kamwani Ltd | Wholesale & retail | 2026 |
| Kank Group Ltd | Wholesale & retail | 2023 |
| Karisma Kidz Limited | Information & communication | 2012 |
| Kashmir Accessories Limited | Wholesale & retail | 2020 |
| Katch Communications Ltd | Information & communication | 2019 |
| Kate and LOU Casting Ltd | Arts & recreation | 2016 |
| Katemduggan Ltd | Professional & scientific | 2025 |
| Kaware Engineering Limited | Administrative & support | 2012 |
| Kay's Health Limited | Health & social care | 2024 |
| Kbdc Consulting Ltd | Professional & scientific | 2018 |
| KBV Consultancy Ltd | Professional & scientific | 2026 |