| Infinesse Training Academy Ltd | Education | 2020 |
| Innovo Limited | Information & communication | 2024 |
| Inside Magazines Ltd | Information & communication | 2006 |
| Instoresdotcom Limited | Information & communication | 2024 |
| Interim Solutions Limited | Professional & scientific | 2013 |
| Irestore Frodsham Ltd | Manufacturing | 2025 |
| Irestored Holdings Ltd | Financial services | 2025 |
| Irestored Tech Ltd | Wholesale & retail | 2019 |
| Ironheads Northwest Ltd | Wholesale & retail | 2021 |
| ITSGD2TK CIC | Education | 2026 |
| J & a Pelling Ltd | Professional & scientific | 1972 |
| J P Forster Haulage Limited | Transport & logistics | 2003 |
| J-Runnin Ltd | Wholesale & retail | 2008 |
| JAB Inspection & Engineering Services Ltd | Professional & scientific | 2014 |
| Jalile Limited | Transport & logistics | 2017 |
| Jayson Property Ltd | Real estate | 2025 |
| JCS Law Limited | Professional & scientific | 2019 |
| JE Aviation Maintenance Limited | Professional & scientific | 2025 |
| JEH Radar Consulting Ltd | Information & communication | 2008 |
| Jennifer Barker Glass Design Limited | Arts & recreation | 2015 |
| Jessb Content Limited | Information & communication | 2025 |
| JHR Executive Recruitment Limited | Administrative & support | 2017 |
| JIL Limited | Wholesale & retail | 2022 |
| Jipster Limited | Wholesale & retail | 2022 |
| JKH Capital Ltd | Wholesale & retail | 2018 |
| JKH Hire Ltd | Administrative & support | 2024 |
| JKH UK Property Ltd | Real estate | 2024 |
| JLR Properties (Cheshire) Limited | Real estate | 2024 |
| Jodie Salt Limited | Education | 2011 |
| Joint Resolutions Ltd | Professional & scientific | 2012 |
| Jones Homes Property Services Ltd | Construction | 2024 |
| Jones Homes Renovations Ltd | Real estate | 2024 |
| JP Accounts and Bookkeeping Ltd | Professional & scientific | 2020 |
| JPW Body Repairs Limited | Wholesale & retail | 2018 |
| JR Styling Ltd | Other services | 2025 |
| Jrjbuilders Limited | Construction | 2018 |
| JS Capital Developments Limited | Real estate | 2025 |
| Julie Potter RVN Limited | Professional & scientific | 2016 |
| Just Debt Limited | Administrative & support | 2017 |
| JW Premier Health Ltd | Health & social care | 2020 |
| K Horne Holdings Limited | Real estate | 2026 |
| K&L Thornton Ltd | Health & social care | 2025 |
| K2 Marquees Limited | Other services | 2025 |
| K22KITCHEN Ltd | Hospitality | 2025 |
| Kaland Limited | Hospitality | 2017 |
| Karasa Limited | Hospitality | 2025 |
| Karen & GI Ltd | Administrative & support | 2020 |
| Kash 22 Take-Aways Limited | Hospitality | 2025 |
| Kate Victoria Ltd | Manufacturing | 2017 |
| Katie Crompton Styling Ltd | Other services | 2023 |
| Kaycee Solutions Limited | Professional & scientific | 2016 |
| KD Heating Ltd | Construction | 2020 |
| Keegans Limited | Professional & scientific | 2002 |
| Key Choice Financial Planning Ltd | Financial services | 2014 |
| KF Music Limited | Education | 2024 |
| Khunthai Restaurant Ltd | Hospitality | 2025 |
| Kilby Consultancy Limited | Information & communication | 2026 |
| KIN by Nettie CIC | Health & social care | 2026 |
| Kingsley Carers Ltd | Health & social care | 2022 |
| Kingsley Internet Solutions Limited | Information & communication | 2009 |
| Kingsley Paperchem Ltd | Information & communication | 2025 |
| Kingsley Squire International (UK) Ltd | Financial services | 2002 |
| KJP927 Ltd | Other services | 2020 |
| KLW Property Consultants Limited | Administrative & support | 2013 |
| KM Psychology Services Ltd | Education | 2024 |
| Kmgp Limited | Professional & scientific | 2001 |
| Kontrast Home Ltd | Construction | 2025 |
| Kool Controls (Bt-Mesh) Ltd | Wholesale & retail | 2024 |
| KPD Business Services Ltd | Professional & scientific | 2011 |
| KPD Payroll & IT Services Ltd | Information & communication | 2025 |
| KPD Property Services Limited | Real estate | 2020 |
| KPM Convenience Ltd | Wholesale & retail | 2025 |
| KPM Property Ltd | Real estate | 2021 |
| Kristina Knight Hospitality Ltd | Hospitality | 2022 |
| Kristy Tuplin Creative Ltd | Professional & scientific | 2022 |
| Lady Heyes Limited | Hospitality | 2013 |
| Lady Heyes Property Limited | Administrative & support | 2019 |
| Lambdrake Limited | Real estate | 1980 |
| Lancashire Landscapes Limited | Administrative & support | 2004 |
| Lawn & Hedge Care Limited | Administrative & support | 2024 |
| LB (NW) Ltd | Arts & recreation | 2021 |
| LCKY7 Limited | Administrative & support | 2018 |
| Legato Business Consulting Limited | Professional & scientific | 2014 |
| Leicester Engineered Solutions Limited | Administrative & support | 2013 |
| Levitate Reformer Pilates Ltd | Arts & recreation | 2025 |
| Libertas Wealth Management Ltd | Financial services | 2014 |
| Lightfoot Consultants Ltd | Information & communication | 2022 |
| Lincoln Student LET Limited | Real estate | 2018 |
| Livingston House Properties Limited | Real estate | 2020 |
| Ljer Consulting Limited | Professional & scientific | 2023 |
| Llantsilio and Merioneth Railway Traction Company Ltd | Information & communication | 2024 |
| Luna Frodsham Ltd | Hospitality | 2026 |
| Lupus Luna Estates Ltd | Real estate | 2022 |
| Lusso Ltd | Other services | 2003 |
| M & B Ventures Limited | Administrative & support | 2017 |
| M & N Hayes Properties Ltd | Real estate | 2025 |
| Main Kebab Limited | Hospitality | 2017 |
| Main ST. Kitchen Ltd | Hospitality | 2020 |
| Main Street Dental Limited | Health & social care | 2017 |
| Main Street Kitchen Frodsham Limited | Hospitality | 2020 |