| Haworth Homes & Lettings Limited | Real estate | 2026 |
| Haworth Telecoms Ltd | Construction | 2022 |
| Hawthorns Property Management Limited | Real estate | 2009 |
| Hayes CNC Ltd | Manufacturing | 2026 |
| Hazelwood Laundry Services Ltd | Other services | 2024 |
| Hazey Dayze Ltd | Professional & scientific | 2021 |
| Hb-Co Property Limited | Real estate | 2024 |
| Health Consulting NW Limited | Administrative & support | 2025 |
| Heartwood Computer Services Limited | Information & communication | 1996 |
| Heatproof Manufacturing Ltd | Wholesale & retail | 2025 |
| Heaven on Earth Limited | Other services | 1997 |
| HEJ Property Investments Ltd | Real estate | 2019 |
| Hella Event Security Limited | Administrative & support | 2021 |
| Helmrig Landscapes Limited | Extraterritorial | 1991 |
| Hewitt's Prints Ltd | Information & communication | 2014 |
| High Altitude Properties Limited | Real estate | 2020 |
| Highfieldhybrid Training Centre Ltd | Arts & recreation | 2022 |
| Highlifemodels Limited | Professional & scientific | 2024 |
| Highshore Limited | Real estate | 2025 |
| Hiking Adventures Ltd | Administrative & support | 2026 |
| Hill LN Cuttz Ltd | Other services | 2022 |
| Hillcroft Laminations and Conversions Limited | Wholesale & retail | 2022 |
| Hilton Developments NW Ltd | Construction | 2022 |
| Hindle Transport Limited | Transport & logistics | 2025 |
| Hire Solutions (Lancashire) Limited | Wholesale & retail | 2010 |
| Hispania School of Languages Limited | Administrative & support | 2025 |
| HLC Maintenance Group Ltd | Construction | 2026 |
| HLC Preston PRP Limited | Other services | 2021 |
| Hoghton Green Ltd | Construction | 2012 |
| Holly Grail Limited | Arts & recreation | 2015 |
| Holt Holdings North West Limited | Administrative & support | 2010 |
| Holwin Roofing Ltd | Construction | 2022 |
| Holy Grail Beverages Limited | Manufacturing | 2018 |
| Holy Spirit Tattoos Limited | Arts & recreation | 2021 |
| Holy Trinity Tattoos Ltd | Arts & recreation | 2017 |
| Home Sweet Rose Limited | Wholesale & retail | 2019 |
| Home Truths (Lancashire) Limited | Real estate | 2006 |
| Homes Forless Limited | Real estate | 2018 |
| HOMEZ2RENTUK Ltd | Real estate | 2024 |
| Honey & Morgan Limited | Professional & scientific | 2024 |
| Honey and Bumble Limited | Professional & scientific | 2018 |
| Hooley Electrical Services Ltd | Construction | 2016 |
| Hope Hospitality Ltd | Hospitality | 2025 |
| Horizon Group Services Ltd | Information & communication | 2026 |
| Hornby Fishery Limited | Arts & recreation | 1965 |
| Hosc Limited | Professional & scientific | 2025 |
| Hossack Medical Services Limited | Health & social care | 2012 |
| Hotline IT Services Limited | Information & communication | 2022 |
| Hotspec Group Ltd | Information & communication | 2016 |
| Hourglass Clinic Limited | Health & social care | 2026 |
| House of Faith Co Limited | Other services | 2026 |
| HQ Group Associates Ltd | Financial services | 2024 |
| Hughes Armstrong Industries Limited | Professional & scientific | 2013 |
| Hugo Consultancy Ltd | Administrative & support | 2023 |
| Humber Inspection and Quality Assurance Ltd | Professional & scientific | 2013 |
| Humber Yates Holdings Ltd | Real estate | 2025 |
| Hungry Haddock Leyland Ltd | Hospitality | 2026 |
| Hungry Horace Accountants Ltd | Professional & scientific | 2021 |
| Hungry Horace Bookkeeping Limited | Professional & scientific | 2022 |
| Hungry Panda Leyland Ltd | Hospitality | 2023 |
| Hurst Investment Group Limited | Financial services | 2021 |
| Hurt Group Holdings Limited | Financial services | 2020 |
| HUW Forestry Domestic Ltd | Other services | 2019 |
| Huxley 3D Design Ltd | Professional & scientific | 2024 |
| I Buy Houses Ltd | Real estate | 2009 |
| IAH Global Ltd | Wholesale & retail | 2023 |
| Iain Lohan Limited | Transport & logistics | 2016 |
| IAN a Bolland (Consultancy) Limited | Professional & scientific | 1992 |
| IAN House Limited | Other services | 2007 |
| IAN Robinson Transport (Leyland Lancashire)) Ltd | Transport & logistics | 2026 |
| IAN Warner Photography Limited | Professional & scientific | 2023 |
| Iclosecapital Ltd | Other services | 2024 |
| Identity Alchemist Limited | Professional & scientific | 2025 |
| IDM Services NW Ltd | Construction | 2019 |
| Ignia Ltd | Manufacturing | 2016 |
| Imaginative Imaging Limited | Professional & scientific | 2013 |
| Imogen Green Designs Ltd | Arts & recreation | 2023 |
| Imotorist Limited | Wholesale & retail | 2010 |
| Imperfectly Perfect Hair Limited | Other services | 2025 |
| Imperial Abodes Limited | Real estate | 2022 |
| Imperium Labs Holdings Ltd | Financial services | 2023 |
| Imperium Labs Ltd | Information & communication | 2021 |
| IN Housing Ltd | Professional & scientific | 2016 |
| IN the Zone Leyland Ltd | Professional & scientific | 2011 |
| Inferno Pizza & Kebabs Ltd | Hospitality | 2026 |
| Infinity Apartments Limited | Hospitality | 2023 |
| Infinity Installations (Commercial) Limited | Construction | 2023 |
| Infrared Technical Services Limited | Professional & scientific | 2002 |
| Inhoco 268 Limited | Real estate | 1993 |
| Injury Mechanics Health & Well-Being Services Ltd | Education | 2023 |
| Inner Champion Ltd | Information & communication | 2026 |
| Inner Peak Limited | Education | 2016 |
| Inner Peak Wellbeing CIC | Other services | 2022 |
| Inner Viking Ltd | Administrative & support | 2019 |
| Innovation Blinds & Shutters Ltd | Wholesale & retail | 2023 |
| Innovecta Limited | Wholesale & retail | 2022 |
| Innovecta Training Limited | Professional & scientific | 2026 |
| Inspired Horti Ltd | Wholesale & retail | 2022 |
| Intellisolve Consultancy Ltd | Professional & scientific | 2024 |
| Intelxpert Ltd | Real estate | 2024 |