| Just Keep Swimming Leisure Ltd | Education | 2023 |
| Just PIE Ltd | Hospitality | 2025 |
| Justice Mortgages Limited | Financial services | 2016 |
| Jutepack Ltd | Wholesale & retail | 2017 |
| JWB Building Limited | Construction | 2007 |
| JWF Cleaning Ltd | Administrative & support | 2023 |
| JWL Civil Engineering & Surveying Limited | Construction | 2024 |
| K & a Invest NW Ltd | Real estate | 2023 |
| K 2 Takeaway Limited | Hospitality | 2025 |
| K Begum Ltd | Health & social care | 2018 |
| K Edmondson Roofing Limited | Construction | 2025 |
| K Electric Lancashire Limited | Construction | 2018 |
| K Hardie Bars Ltd | Hospitality | 2025 |
| K Israr Optical Ltd | Health & social care | 2025 |
| K J Products Limited | Manufacturing | 2018 |
| K K Zore and Sons Ltd | Real estate | 2023 |
| K Leisure Ltd | Arts & recreation | 2019 |
| K R Fleet Support Limited | Wholesale & retail | 2011 |
| K Stables Joinery Ltd | Construction | 2022 |
| K&K Zore Limited | Wholesale & retail | 2022 |
| K&M Property Partners Limited | Real estate | 2026 |
| K. Chowdhry & Co Ltd | Professional & scientific | 2014 |
| K.M.S. Construction (Burnley) Limited | Construction | 2006 |
| K1NGS Taxis Ltd | Transport & logistics | 2015 |
| K2 North West Holdings Limited | Financial services | 2024 |
| K2 North West Storage Ltd | Transport & logistics | 2020 |
| Kaago Property Ltd | Real estate | 2018 |
| Kaanco Ltd | Wholesale & retail | 2016 |
| Kacegb Properties Ltd | Real estate | 2021 |
| Kada FM Ltd | Construction | 2025 |
| Kane Family Funerals Ltd | Other services | 2008 |
| KAR Furniture Ltd | Wholesale & retail | 2025 |
| Karavadra and Sons Ltd | Wholesale & retail | 2021 |
| Karenka Consulting Limited | Administrative & support | 2015 |
| Karim Dogar Limited | Wholesale & retail | 2025 |
| Karmakoko Ltd | Other services | 2017 |
| Kasbah Group Ltd Limited | Hospitality | 2025 |
| Kassia Southsea Limited | Extraterritorial | 2016 |
| Kathleens KJ Ltd | Wholesale & retail | 2020 |
| Kavia Mouldings Limited | Manufacturing | 1984 |
| Kavia Tooling Holdings Ltd | Financial services | 2026 |
| Kavia Tooling Limited | Manufacturing | 2005 |
| KAY and Sons Limited | Real estate | 2018 |
| KAY ST Mini Mart Ltd | Wholesale & retail | 2016 |
| KB Builder 1 Ltd | Construction | 2022 |
| KB Builders Burnley Ltd | Construction | 2019 |
| KCS Support Limited | Professional & scientific | 2024 |
| KD LGL Consulting Limited | Administrative & support | 2018 |
| KD Plant and Haulage Ltd | Mining & quarrying | 2021 |
| Kebab Marmaris Ltd | Hospitality | 2021 |
| Keep IT Chilled Road Solutions Ltd | Transport & logistics | 2020 |
| Keepmegifts Ltd | Wholesale & retail | 2024 |
| Keirby Walk Ltd | Other services | 2020 |
| Keju Communications Ltd | Information & communication | 2008 |
| Kenban Assistive Technologies Ltd | Manufacturing | 2022 |
| Kendal & DEC Limited | Hospitality | 2018 |
| Kendal’S Roller Rink Ltd | Arts & recreation | 2026 |
| Kennedy Chadwick Estates Ltd | Real estate | 2025 |
| Kenza Online Ltd | Wholesale & retail | 2024 |
| Kerrson Ltd | Real estate | 2021 |
| KES Properties Limited | Real estate | 2010 |
| Ketamine Education Services C.I.C. | Education | 2025 |
| Kevin Berkins Quality Meats Limited | Wholesale & retail | 1977 |
| Kevin Gibson Landmark Ltd | Construction | 2024 |
| Key Medical Experts Ltd | Administrative & support | 2018 |
| Key Systems EC2 Limited | Information & communication | 1997 |
| Keyhive Property Ltd | Real estate | 2025 |
| Keyplus Fire & Security Ltd | Administrative & support | 2006 |
| Keyplus Group Ltd | Financial services | 2025 |
| Keyplus Security Ltd | Administrative & support | 2008 |
| Keystone (NW) Limited | Professional & scientific | 2024 |
| Keystone Construction & Landscaping Ltd | Construction | 2023 |
| Keyvape Solutions Ltd | Manufacturing | 2022 |
| KGB Properties Limited | Wholesale & retail | 1999 |
| KGN Properties Limited | Real estate | 2019 |
| KHA (NW) Ltd | Real estate | 2022 |
| Khadijah Enterprises Limited | Professional & scientific | 2025 |
| Khalil Italia Ltd | Hospitality | 2026 |
| Khan Management Ltd | Professional & scientific | 2017 |
| Khan Tech Ltd | Information & communication | 2024 |
| Khanny Ltd | Wholesale & retail | 2022 |
| Khattak L Limited | Wholesale & retail | 2018 |
| KHN Medical Ltd | Health & social care | 2023 |
| Khokhar Desserts Limited | Hospitality | 2025 |
| KHW Desserts Ltd | Hospitality | 2024 |
| KI Cleaning Services Ltd | Administrative & support | 2022 |
| Kiddy Chaos Limited | Health & social care | 2013 |
| Kiddy Kids Ltd | Arts & recreation | 2023 |
| Kids Connection (Burnley) Ltd | Manufacturing | 2024 |
| Kilnhurst Holdings Ltd | Financial services | 2022 |
| KIM Pharma Ltd | Manufacturing | 2024 |
| Kinetic Systems Solar Installation Ltd | Construction | 2024 |
| Kingfisher NW Ltd | Wholesale & retail | 2018 |
| Kingham Ventures LLP | | 2013 |
| Kingston Maintenance & Building Services Limited | Construction | 2003 |
| Kingsway Tyres Ltd | Wholesale & retail | 2020 |
| Kirk Properties Limited | Real estate | 1996 |
| Kirkwells Limited | Professional & scientific | 2010 |
| Kita Aesthetics Limited | Health & social care | 2019 |
| Kite International Limited | Manufacturing | 1941 |