| KAM Project Consultants Limited | Professional & scientific | 2013 |
| Kanada-Ya Holdings Ltd | Hospitality | 2019 |
| Kandal Joinery Ltd | Construction | 2013 |
| Karins Catering Limited | Hospitality | 1997 |
| Karpowership Latam Limited | Energy | 2016 |
| Karpowership UK Limited | Energy | 2016 |
| Katy Horrocks Marketing Limited | Professional & scientific | 2019 |
| Kbserv Ltd | Professional & scientific | 2012 |
| KCA Limited | Construction | 2019 |
| KDR Talent Ltd | Administrative & support | 2023 |
| Keel Surveyors Partnership (KSP) LLP | | 2009 |
| Kenryn Developments Limited | Construction | 2011 |
| Kentclass Ltd | Real estate | 1994 |
| Kestral Property Group Ltd | Real estate | 2024 |
| KEW (Electrical Distributors) Limited | Extraterritorial | 1996 |
| Key Global Recruitment Ltd | Administrative & support | 2019 |
| Keyn Logistics Management Limited | Transport & logistics | 1998 |
| KG Properties (Knutsford) Ltd | Real estate | 2017 |
| Kids Back 2 Sport Limited | Other services | 2023 |
| Kids Country Day Nursery Holdings Ltd | Financial services | 2021 |
| Kids Country Day Nursery Ltd | Health & social care | 2014 |
| Killer Kween Productions Ltd | Administrative & support | 2024 |
| Kilnockie Limited | Real estate | 2016 |
| Kingfisher Business Finance Limited | Financial services | 2011 |
| Kingfisher Retreat Ltd | Hospitality | 2020 |
| Kitwe Holdings Limited | Financial services | 2024 |
| KJM Landscapes Garden Maintenance Specialist Ltd | Administrative & support | 2017 |
| KL Coaching Ltd | Arts & recreation | 2025 |
| Knightlodge Limited | Real estate | 1998 |
| Knutcraft Ltd | Arts & recreation | 2025 |
| Knutsford Barbers Ltd | Other services | 2026 |
| Knutsford Breakfast Limited | Hospitality | 2026 |
| Knutsford Business Leasing Limited | Real estate | 2020 |
| Knutsford Car Care Services Limited | Wholesale & retail | 2012 |
| Knutsford Consulting Limited | Professional & scientific | 2013 |
| Knutsford Day Nursery Limited | Education | 2005 |
| Knutsford Electrics Ltd | Construction | 2022 |
| Knutsford Exhibitions Limited | Administrative & support | 2003 |
| Knutsford Groceries Limited | Wholesale & retail | 2018 |
| Knutsford Home Automation Ltd | Information & communication | 2025 |
| Knutsford Podiatry Limited | Health & social care | 2013 |
| Knutsford Print Limited | Manufacturing | 2023 |
| Knutsford Properties Limited | Real estate | 1995 |
| Knutsford Safety LLP | | 2010 |
| Knutsford Sweets Limited | Wholesale & retail | 2011 |
| Knutsford Tanning Ltd | Other services | 2021 |
| Knutsford Underpinning Ltd | Construction | 2022 |
| Knutsford Wedding Gallery Limited | Wholesale & retail | 2016 |
| Knutsford Wood Company Ltd | Construction | 2023 |
| Kochhar Medical Limited | Health & social care | 2018 |
| Komak Solutions Ltd | Professional & scientific | 2024 |
| Koralit Limited | Professional & scientific | 2010 |
| KVM Air Limited | Energy | 2021 |
| KY2 Limited | Hospitality | 2024 |
| Kyldn Limited | Manufacturing | 2024 |
| Kylndon Ltd | Hospitality | 2024 |
| Kylondon Limited | Hospitality | 2024 |
| Kyoto Bonsai Limited | Wholesale & retail | 2004 |
| L & B Carter Limited | Agriculture & fishing | 2010 |
| L & P Clarkson Properties Ltd | Real estate | 2020 |
| L a Knutsford Ltd | Hospitality | 2025 |
| LA Forge DE Gravier Limited | Extraterritorial | 2014 |
| LA Garden Design Limited | Professional & scientific | 2010 |
| LA Mexican Ltd | Hospitality | 2024 |
| LAB 33 Skin Limited | Manufacturing | 2025 |
| Lains Commercial Ltd | Professional & scientific | 2025 |
| Lampart Properties Limited | Real estate | 2003 |
| Lancashire Automobile Club (1902) Limited | Arts & recreation | 2019 |
| Lancebury Estates Ltd | Real estate | 2006 |
| Land & Sea Group Ltd | Other services | 2023 |
| Landfinder Limited | Real estate | 2003 |
| Landrea Limited | Wholesale & retail | 2025 |
| Landscape Academy and Research Ltd | Administrative & support | 2025 |
| Langness Holdings Limited | Administrative & support | 2021 |
| Laniado Ltd | Real estate | 2006 |
| Lanigan & Hulme Ltd | Wholesale & retail | 2017 |
| Laravelware.Com Limited | Professional & scientific | 2022 |
| Larkspur Lodge Ltd. | Hospitality | 2014 |
| Larkspur Project Management LLP | | 2009 |
| Larkspur Projects Limited | Construction | 2023 |
| Larkspur Residential Ltd | Real estate | 2020 |
| Lasker Trap Development Capital Limited | Financial services | 2022 |
| Latelier Fashion Ltd | Manufacturing | 2013 |
| Latu-Andrews Consulting Limited | Professional & scientific | 2026 |
| Lauri & Co. Limited | Professional & scientific | 2024 |
| Lauross Estates Limited | Real estate | 2025 |
| Laurum Ltd | Professional & scientific | 2023 |
| Lavender Hand Car Wash Ltd | Administrative & support | 2026 |
| Lawternative Ltd | Professional & scientific | 2018 |
| Lazzarini Limited | Wholesale & retail | 2019 |
| LB Pilates Ltd | Other services | 2021 |
| LCI Bespoke Ltd | Financial services | 2022 |
| LCI Ltd | Wholesale & retail | 2019 |
| LCJ Health Ltd | Health & social care | 2024 |
| LDK Proprietas Limited | Real estate | 2026 |
| Leak Property’S Limited | Construction | 2024 |
| Learning Legends Universe Limited | Information & communication | 2025 |
| Leathercare Limited | Manufacturing | 2019 |
| Ledacon Ltd | Professional & scientific | 2013 |
| LEE Boswell Photography Limited | Professional & scientific | 2011 |