| Keyline Limited | Information & communication | 2015 |
| Keyvest Property Consulting Ltd | Real estate | 2025 |
| KGC Inspections Ltd | Professional & scientific | 2013 |
| Khaab Consulting Limited | Extraterritorial | 2025 |
| Khizar E Hub Ltd | Wholesale & retail | 2025 |
| Kicking Back Trips Ltd | Administrative & support | 2025 |
| Kids Zone Games Ltd | Arts & recreation | 2002 |
| Killer Bargains Ltd | Wholesale & retail | 2025 |
| Kimbo Properties Limited | Construction | 2014 |
| Kinder Mews Management Company Limited | Households | 2020 |
| King Street Farm Management Company Limited | Households | 1993 |
| Kingdom Building Cheshire Ltd | Construction | 2025 |
| Kingfisher Construction North West Limited | Construction | 2026 |
| Kingford Partnership Limited | Real estate | 2010 |
| Kingsley Adams Limited | Administrative & support | 2007 |
| Kingsley Adams Properties Limited | Real estate | 2013 |
| Kingslock UK Limited | Professional & scientific | 1994 |
| Kirk Originals Limited | Wholesale & retail | 1992 |
| Kirkdale Consultancy Ltd | Real estate | 2018 |
| Kismet Cheshire Ltd | Wholesale & retail | 2022 |
| Kitchin Williams Property Company Limited | Real estate | 2018 |
| Kitsune Payroll UK Ltd | Information & communication | 2022 |
| Kitsune Squad Ltd | Information & communication | 2020 |
| KL Engineering Solutions Ltd | Professional & scientific | 2025 |
| KLM Business Services Limited | Professional & scientific | 1991 |
| KMC Mobil Barber Ltd | Other services | 2025 |
| KMW Projects Ltd | Information & communication | 2025 |
| Knight International Training Limited | Professional & scientific | 2011 |
| Knutsford Logistics Limited | Transport & logistics | 2025 |
| Knutsford Sandwich Co Ltd | Hospitality | 2026 |
| Knutsford Tree Services Limited | Administrative & support | 2025 |
| Kobalt Properties Limited | Construction | 2014 |
| Kobi Tiger Ltd | Arts & recreation | 2023 |
| Kochuveettil Legacy Investments Ltd | Real estate | 2026 |
| Kodo Homes Ltd | Real estate | 2025 |
| KOG Trading Limited | Wholesale & retail | 2020 |
| Koko Wonder Europe Limited | Agriculture & fishing | 2025 |
| Kompact Equipment Sales & Rentals Ltd | Wholesale & retail | 2019 |
| Korbis Ltd | Extraterritorial | 2020 |
| Kornelis Limited | Construction | 2022 |
| KOV Limited | Manufacturing | 2017 |
| Krawczynski Trans Limited | Transport & logistics | 2022 |
| Krznar Glass Services Ltd | Professional & scientific | 2018 |
| KSC (Port Clarence) Ltd | Manufacturing | 2005 |
| KSH Safety Services Limited | Professional & scientific | 2021 |
| KTH Digital Ltd | Other services | 2023 |
| Kudos Property Group Ltd | Wholesale & retail | 2013 |
| Kukoo Art Ltd | Arts & recreation | 2015 |
| L & F Property Limited | Real estate | 2025 |
| L J Collar Properties Ltd | Real estate | 2024 |
| L Sayle Project Control Ltd | Administrative & support | 2007 |
| L&K Medi-Rec Collative Services Ltd | Professional & scientific | 2016 |
| LA Inc Limited | Health & social care | 2023 |
| LA Turka Catering Ltd | Hospitality | 2024 |
| Labtec Corrosion Workshop Limited | Manufacturing | 1995 |
| Lacuna Recordings Ltd | Information & communication | 2018 |
| Ladywell Enterprises Limited | Real estate | 2021 |
| Lakeland Consulting Group Ltd | Financial services | 2023 |
| Lambfell Fasteners Limited | Wholesale & retail | 2021 |
| Lambfell Holdings Ltd | Administrative & support | 2023 |
| Lambfell Plant Limited | Construction | 2021 |
| Lanafred Consultants Ltd | Professional & scientific | 2025 |
| Lanarkslea House Limited | Households | 1999 |
| Lancaster Grange Limited | Construction | 2025 |
| Lancelot Hospitalities Ltd | Hospitality | 2021 |
| Land & Development Limited | Real estate | 1996 |
| Lando Transport (NW) Limited | Transport & logistics | 2023 |
| Landsmere Limited | Construction | 2017 |
| Lara Castle Ltd | Hospitality | 2026 |
| Larm Services Ltd | Professional & scientific | 2024 |
| Last Orders Drinks Co. Ltd | Wholesale & retail | 2025 |
| Latham Developments Ltd | Construction | 2018 |
| Laura Crank Aesthetics Ltd | Professional & scientific | 2024 |
| Laura Floyd PA Services Ltd | Administrative & support | 2021 |
| Lauren West Ltd | Professional & scientific | 2025 |
| Layer 5 Solutions Limited | Information & communication | 2012 |
| Layers Treats Limited | Wholesale & retail | 2020 |
| LB CRM Limited | Professional & scientific | 2022 |
| Lcpd Limited | Real estate | 2019 |
| LCW Consultancy Ltd | Professional & scientific | 2026 |
| LE Quai Holdings Ltd | Education | 2021 |
| LEA Williams Limited | Arts & recreation | 2019 |
| Leabest Limited | Wholesale & retail | 2022 |
| Lead Phoenix Ltd | Professional & scientific | 2020 |
| Leading Military Fitness Franchise Ltd | Arts & recreation | 2024 |
| Leadout Cycles Limited | Wholesale & retail | 2021 |
| Learnocracy Ltd | Information & communication | 2011 |
| Lectixcon Limited | Professional & scientific | 2005 |
| Leech Property Maintenance Limited | Construction | 2023 |
| Leep Consulting Ltd | Professional & scientific | 2019 |
| Lees Gilbert ERP Limited | Professional & scientific | 2026 |
| Left Hand Studio Limited | Wholesale & retail | 2020 |
| Legalbase CRE Limited | Professional & scientific | 2023 |
| Legalbase Group Limited | Financial services | 2021 |
| Legalbase NW Limited | Professional & scientific | 2019 |
| Legend Products Group Limited | Administrative & support | 2015 |
| Leigh Ecology Ltd | Professional & scientific | 2013 |
| Leigh Rock Festival Ltd | Arts & recreation | 2018 |
| Leigh Window Cleaning Services Limited | Administrative & support | 2025 |
| Leisurelogic Ltd | Administrative & support | 2014 |