| Hivex Business Solutions Limited | Information & communication | 2018 |
| Hjorty Limited | Financial services | 2017 |
| Hobsons (Lancashire) Ltd | Other services | 2018 |
| Hodgson Tool Hire Limited | Administrative & support | 2004 |
| Holberco Produce Limited | Wholesale & retail | 2004 |
| Holden Tax Consulting Ltd | Professional & scientific | 2006 |
| Holehouse Plumbing Solutions Ltd | Construction | 2015 |
| Holiday Home Parks Limited | Hospitality | 2024 |
| Hollie Williams Skin & Training Ltd | Other services | 2025 |
| Holmeswood KOI Aquatics Limited | Agriculture & fishing | 2005 |
| Home Improvement Agency NW Ltd | Health & social care | 2025 |
| Home Letting NW Ltd | Real estate | 2023 |
| Home Together Ltd | Health & social care | 2022 |
| Homze Developments Limited | Construction | 2011 |
| Homze Investments Limited | Real estate | 2008 |
| Homze Limited | Real estate | 2007 |
| Hoods (UK) Military Mart Limited | Wholesale & retail | 2012 |
| Hopkinson Farm Limited | Agriculture & fishing | 2021 |
| Horizon Hygiene Limited | Wholesale & retail | 2006 |
| Horneywink Limited | Professional & scientific | 2023 |
| Hospice Africa Limited | Health & social care | 1993 |
| House of Linden Ltd | Financial services | 2023 |
| Howe Brook Limited | Arts & recreation | 2023 |
| HPA Foods Limited | Hospitality | 2016 |
| HRR Residential Ltd | Real estate | 2023 |
| Huff and Puff (Omskirk) Ltd | Wholesale & retail | 2025 |
| Hugo's Cafe Lancashire Limited | Hospitality | 2022 |
| Hulk Fabrications Limited | Manufacturing | 2022 |
| Humphries Audio Visual Limited | Administrative & support | 2008 |
| Hunter James Recruitment Limited | Administrative & support | 2021 |
| Hunter Mills Holdings Ltd | Financial services | 2021 |
| Hunter Mills Limited | Financial services | 2001 |
| Hurlston Hall Clubhouse Limited | Hospitality | 2014 |
| Hurlston Hall Holding Limited | Hospitality | 2016 |
| Hurlston Hall Limited | Arts & recreation | 2016 |
| Hurlston Hall Property Limited | Real estate | 2016 |
| Hurlston Hall Sport and Leisure Limited | Arts & recreation | 2020 |
| Hurlston Hall Trading Limited | Arts & recreation | 2016 |
| HVS (NW) Limited | Administrative & support | 2002 |
| Hydrojet Solutions Ltd | Administrative & support | 2025 |
| Hype Retail UK Limited | Wholesale & retail | 2002 |
| Hyundai Euro Partners Limited | Financial services | 2018 |
| I & a Installations Limited | Construction | 2013 |
| I & L Projects Limited | Professional & scientific | 2014 |
| IAN Oldfield Construction Ltd | Construction | 2010 |
| IAN Tomlinson Consulting Limited | Administrative & support | 2003 |
| Ichas Limited | Wholesale & retail | 2013 |
| ID Business Limited | Wholesale & retail | 1997 |
| ID Inspection Services Limited | Professional & scientific | 2016 |
| Idea Architecture and Design Limited | Professional & scientific | 2021 |
| IEG Global Ltd | Administrative & support | 2022 |
| Ietc Ltd | Construction | 2012 |
| IGA Legal Limited | Administrative & support | 2018 |
| IKD Building Services Limited | Professional & scientific | 2012 |
| Ikigaishotokankarate Limited | Education | 2024 |
| IKO Chester Limited | Hospitality | 2015 |
| IKO Events Limited | Hospitality | 2009 |
| IKO Northgate Limited | Hospitality | 2021 |
| IKO Oldham Ltd | Hospitality | 2026 |
| IKO Ormskirk Limited | Hospitality | 2001 |
| IKO Pepper Street Ltd | Hospitality | 2019 |
| IKO Projects Holdings Limited | Hospitality | 2022 |
| IKO Watergate Limited | Hospitality | 2016 |
| Iluv Boutique Limited | Wholesale & retail | 2025 |
| IM Services (NW) Ltd | Professional & scientific | 2014 |
| Imbibe Holdings Ltd | Professional & scientific | 2023 |
| Immaculate Northwest Ltd | Administrative & support | 2023 |
| Impact Event Solutions Ltd | Construction | 2026 |
| IN2VENTION Risk Management Ltd | Professional & scientific | 2022 |
| IN8 Alliance Ltd | Health & social care | 2011 |
| INCINER8 Holdings Limited | Manufacturing | 2013 |
| INCINER8 Limited | Manufacturing | 2003 |
| Industrial Treatment Services Ltd | Water & waste | 1976 |
| Industrial Truck Services Limited | Extraterritorial | 2000 |
| Ineson Ltd | Wholesale & retail | 2025 |
| Info-Alert Limited | Administrative & support | 2018 |
| Infosecurs Limited | Information & communication | 2021 |
| Inkology Ltd | Manufacturing | 2025 |
| Innerwarden Ltd | Information & communication | 2026 |
| INP Engineering Ltd | Professional & scientific | 2019 |
| Insequence Europe Limited | Information & communication | 2014 |
| Insidethelens Ltd | Information & communication | 2026 |
| Insight Talent Solutions Limited | Administrative & support | 2016 |
| Inspired for Health Ltd | Professional & scientific | 2025 |
| Intelligent Business Space Ltd | Administrative & support | 2025 |
| Intelligent Sports Group Limited | Professional & scientific | 2016 |
| Intelligent Sports Management Limited | Professional & scientific | 2016 |
| Intelligent Sports Marketing Limited | Professional & scientific | 2013 |
| Intelligent Sports Media Limited | Professional & scientific | 2013 |
| Intelligent Sports Recruitment Limited | Administrative & support | 2014 |
| Intensity Sports Performance Wirral Ltd | Education | 2026 |
| Interior Finishings Ltd | Wholesale & retail | 2025 |
| International BUS Designs Limited | Professional & scientific | 2005 |
| Into the ARK Forest School Ltd | Education | 2019 |
| Invest Education Ltd | Education | 2025 |
| IPP Productions Ltd | Information & communication | 2013 |
| IRS Surfacing Technologies Limited | Manufacturing | 1991 |
| Island Park Limited | Real estate | 2004 |
| Islbie Properties Ltd Ltd | Construction | 2026 |
| ISM International Limited | Professional & scientific | 2018 |