| Jubilee Harvest Church | Other services | 2002 |
| Judetech Solutions Ltd | Information & communication | 2025 |
| Juja Properties Limited | Real estate | 2021 |
| Jules Culture Ltd | Manufacturing | 2026 |
| Jules Health Ltd | Health & social care | 2025 |
| Julie's Grill Ltd | Hospitality | 2025 |
| Julienest Catering Services Ltd | Hospitality | 2019 |
| Julivin Ltd | Health & social care | 2013 |
| Julsot Ltd | Construction | 2016 |
| Jumanne Locs and Aesthetics Limited | Other services | 2026 |
| Jungle Hair and Beauty Limited | Other services | 2023 |
| Jupiter Investments & IT Solutions Ltd | Information & communication | 2015 |
| Jurby Watertech International (UK) Limited | Manufacturing | 1991 |
| Juriyafit Ltd | Wholesale & retail | 2026 |
| Jushah Ltd | Real estate | 2021 |
| Jusna Property Holdings Limited | Real estate | 2026 |
| Just Bling IT Ltd | Wholesale & retail | 2025 |
| Just CUT Ltd | Other services | 2020 |
| Just Management Consulting Ltd | Professional & scientific | 2014 |
| Just Moovin Ltd | Real estate | 2023 |
| Just Tiling Ceramic & Portelan Ltd | Construction | 2017 |
| Just Tints Ltd | Wholesale & retail | 2018 |
| Justino Drylinning Company Limited | Construction | 2023 |
| Juvenile Ltd | Wholesale & retail | 2025 |
| Jvey Design Studio Ltd | Professional & scientific | 2022 |
| JYO Logistics Ltd | Construction | 2024 |
| K & S Linens Limited | Wholesale & retail | 2017 |
| K Beauty Massage Therapy Ltd | Other services | 2025 |
| K Food Marketing Limited | Wholesale & retail | 2026 |
| K K Trading Ltd | Wholesale & retail | 2025 |
| K S Builders & Developers Ltd. | Construction | 2024 |
| K S Solutions Ltd | Information & communication | 2009 |
| K Tribe Ltd | Wholesale & retail | 2021 |
| K&A GAS Ltd | Construction | 2020 |
| K&J Skip Hire Ltd | Water & waste | 2019 |
| K&K Consultancy Ltd | Information & communication | 2024 |
| K&M Living Limited | Real estate | 2025 |
| K&N Homes Ltd | Real estate | 2026 |
| K-Point Developments Ltd | Construction | 2018 |
| K.J. Wela Ltd | Real estate | 2024 |
| K.K Healthcare Ltd | Health & social care | 2011 |
| K9 Regiment Ltd | Administrative & support | 2019 |
| K9 Squad Security Ltd | Administrative & support | 2017 |
| KA Broderick Ltd | Education | 2023 |
| KA Tarling Ltd | Real estate | 2017 |
| Kaah Transport Limited | Transport & logistics | 2023 |
| Kaashi Foods and Beverages Ltd | Manufacturing | 2023 |
| Kaba Swaray Ltd | Transport & logistics | 2020 |
| Kabcom Electrical Services Limited | Manufacturing | 2024 |
| KAF Health Care Training Centre Ltd | Education | 2006 |
| Kafu Home Ltd | Real estate | 2025 |
| Kagbeni Limited | Wholesale & retail | 2014 |
| Kaidrix Utilities Ltd | Wholesale & retail | 2025 |
| Kalessipetnest Limited | Wholesale & retail | 2026 |
| Kalon Nextz Ltd | Wholesale & retail | 2017 |
| Kalra Limited | Real estate | 2024 |
| Kalsoom Services Limited | Professional & scientific | 2014 |
| Kaludov Ltd | Other services | 2018 |
| Kalyals Courier Services Ltd | Transport & logistics | 2024 |
| Kamada Delivery Limited | Transport & logistics | 2023 |
| Kamala Consulting Limited | Information & communication | 2015 |
| Kamala Embellishments Ltd | Manufacturing | 2012 |
| Kamamba Group Limited | Professional & scientific | 2022 |
| Kamba Dyami Limited | Wholesale & retail | 2021 |
| Kamba Services Ltd | Transport & logistics | 2023 |
| Kamboj Builders Ltd | Construction | 2023 |
| Kamboj Real Estate Ltd | Real estate | 2022 |
| Kamciyo Limited | Wholesale & retail | 2023 |
| Kamile Hair & Beauty Ltd | Other services | 2021 |
| Kamnele Limited | Administrative & support | 2017 |
| Kamos C S Ltd | Administrative & support | 2017 |
| Kams Dahaj Limited | Real estate | 2022 |
| Kanex Consulting Limited | Professional & scientific | 2019 |
| Kang Consulting Ltd | Administrative & support | 2024 |
| Kanily Impact Limited | Information & communication | 2010 |
| Kannan Industrials Ltd | Information & communication | 2025 |
| Kanoni Consultancy Ltd | Construction | 2017 |
| Kans Hub Limited | Wholesale & retail | 2025 |
| Kapitol Investment Ltd | Financial services | 2026 |
| Karaboz Properties Limited | Real estate | 2026 |
| Karam & Sons Contractors Ltd | Construction | 2025 |
| Karam Contractors Ltd | Construction | 2023 |
| Karanjit Ltd | Construction | 2024 |
| Karia Befriending Care Agency Limited | Health & social care | 2018 |
| Karwar Limited | Wholesale & retail | 2025 |
| Karwoo Ilford Ltd | Hospitality | 2025 |
| KAS Arts Service (UK) Limited | Manufacturing | 2011 |
| Kashify Solution Ltd | Wholesale & retail | 2024 |
| Kashmir Halal Foods Limited | Wholesale & retail | 1997 |
| Kashmir Solutions Limited | Real estate | 2025 |
| Kauris Ltd | Administrative & support | 2012 |
| Kaviko Construction Ltd | Construction | 2020 |
| KAY Mens Ltd | Construction | 2015 |
| KAY Motors Limited | Wholesale & retail | 2024 |
| Kayaco Investments Limited | Real estate | 2015 |
| Kaysdvine Ltd | Administrative & support | 2020 |
| Kayverse Limited | Information & communication | 2025 |
| Kazi Way Limited | Wholesale & retail | 2020 |
| KB Plumbing and Maintenance Services Limited | Construction | 2022 |
| KBA Car Parts Ltd | Wholesale & retail | 2006 |