| Junction Surgery Ltd | Health & social care | 2014 |
| Junk Movers West Yorkshire Ltd | Other services | 2021 |
| Juris Consultus Ltd | Professional & scientific | 2023 |
| JUS Chicken Ltd | Hospitality | 2024 |
| Just Sports (Yorkshire) Ltd | Wholesale & retail | 2010 |
| Just View Housing Limited | Real estate | 2022 |
| Just Webbit Limited | Professional & scientific | 2014 |
| Justin Mcguire Ltd | Wholesale & retail | 2025 |
| JVD Investments Ltd | Real estate | 2025 |
| JW & DW Investment Limited | Financial services | 2013 |
| JW & RP Properties Limited | Real estate | 2026 |
| JW Bespoke Installations Ltd | Construction | 2026 |
| JW Holdings (Yorkshire) Ltd | Financial services | 2026 |
| JWL Installations Ltd | Construction | 2025 |
| JWS & Associates Ltd | Professional & scientific | 2010 |
| JWS Mechanical Ltd | Construction | 2026 |
| JYS Group Ltd | Real estate | 2024 |
| JZ Management Services Ltd | Information & communication | 2026 |
| JZ Tech Ltd | Wholesale & retail | 2024 |
| Jörd Renewables Ltd | Construction | 2021 |
| K & G Sass Ltd | Other services | 2021 |
| K & H Huddersfield Limited | Manufacturing | 2018 |
| K & L Properties (Yorkshire) Ltd | Real estate | 2018 |
| K & M Pharmacy Limited | Wholesale & retail | 1998 |
| K & Mart Ltd | Wholesale & retail | 2025 |
| K & Y Pervaiz Limited | Real estate | 2017 |
| K a & R Limited | Arts & recreation | 2017 |
| K a G Interpreting Limited | Professional & scientific | 2015 |
| K Builders Ltd | Construction | 2025 |
| K C Design House Limited | Manufacturing | 1981 |
| K Chohan Psychotherapy Ltd | Health & social care | 2020 |
| K Electrical Contractors Limited | Construction | 2010 |
| K H Home Furnishings Limited | Wholesale & retail | 2024 |
| K Iqbal Ltd | Health & social care | 2022 |
| K Johal Ltd | Health & social care | 2021 |
| K Kang Holdings Ltd | Financial services | 2025 |
| K M Braithwaite Limited | Construction | 2018 |
| K Partitions and Ceilings Ltd | Construction | 2016 |
| K Reddington Limited | Health & social care | 2026 |
| K Social Care Consultancy Ltd | Health & social care | 2011 |
| K Statham Services Ltd | Transport & logistics | 2025 |
| K W P Properties Ltd | Real estate | 2007 |
| K Watson Transport Ltd | Transport & logistics | 2025 |
| K&D Recruitment Limited | Administrative & support | 2020 |
| K&M Diamond Construction Limited | Construction | 2021 |
| K&T Exterior Cleaning Ltd | Administrative & support | 2024 |
| K-Prime Ltd | Wholesale & retail | 2025 |
| K-Vape Ltd | Wholesale & retail | 2022 |
| K. Pharma (Huddersfield) Limited | Wholesale & retail | 2005 |
| K.A Lewis and Company Private Limited | Transport & logistics | 2021 |
| K.K.W. Services Limited | | 1989 |
| K.Kaam Ltd | Administrative & support | 2022 |
| K.P. Motor Engineers Limited | Manufacturing | 2002 |
| K.P.A.T Limited | Construction | 2003 |
| K1K2 Ltd | Extraterritorial | 2012 |
| K3 Consultants Ltd | Health & social care | 2015 |
| K4 Commercial Ltd | Real estate | 2020 |
| KA Huddersfield Pizza Ltd | Hospitality | 2025 |
| Kaar Technologies UK Limited | Information & communication | 2013 |
| Kaay News Ltd | Wholesale & retail | 2026 |
| Kabana 1 Limited | Hospitality | 2009 |
| Kabor Property Ltd | Households | 2024 |
| Kaccl Ltd | Other services | 2019 |
| Kahar Traders Ltd | Wholesale & retail | 2026 |
| Kaiba Group Ltd | Wholesale & retail | 2008 |
| Kaif Properties Ltd | Real estate | 2026 |
| Kaji Deal Sourcing Ltd | Real estate | 2024 |
| Kajo by Design Limited | Wholesale & retail | 2019 |
| Kakateeya Kitchens Ltd | Hospitality | 2023 |
| Kalar Car Wash Ltd | Administrative & support | 2019 |
| Kaler Haulage Limited | Transport & logistics | 2024 |
| Kalim Travels Ltd | Wholesale & retail | 2023 |
| Kalinago Solutions Limited | Professional & scientific | 2025 |
| Kallarackal Enterprises UK Ltd | Wholesale & retail | 2026 |
| KAM Futures Limited | Professional & scientific | 2011 |
| Kama Lolu Ltd | Information & communication | 2026 |
| Kambeni Limited | Health & social care | 2022 |
| Kamel Health Care Limited | Health & social care | 2013 |
| Kammap Limited | Real estate | 2025 |
| Kandiholdings Limited | Real estate | 2024 |
| Kane Martial Arts Ltd | Education | 2022 |
| Kang Financials Ltd | Financial services | 2025 |
| Kanishk Bhardwaj Ltd | Arts & recreation | 2025 |
| KAP Holdings (Leeds) Limited | Real estate | 2026 |
| Kapow Comics Ltd | Wholesale & retail | 2014 |
| Kappa Data Consulting Ltd | Information & communication | 2023 |
| Kapray Limited | Wholesale & retail | 2014 |
| Kara Group Ltd | Professional & scientific | 2016 |
| Karara Builders Ltd | Professional & scientific | 2010 |
| Karen Ardley Associates Ltd | Education | 2010 |
| Kari Bfit Ltd | Arts & recreation | 2022 |
| Kariday Limited | Real estate | 2004 |
| Karimscorp Ltd | Wholesale & retail | 2023 |
| KAS Collectables Ltd | Wholesale & retail | 2021 |
| KAS Property Management Limited | Real estate | 2009 |
| Kasa DS Ltd | Real estate | 2014 |
| Kasel Limited | Hospitality | 2018 |
| Kashmir Barbers Hudds Ltd | Other services | 2026 |
| Kashmir Butchers (Hudds) Ltd | Other services | 2022 |
| Kashmiri Brothers Ltd | Transport & logistics | 2025 |