| Hollyblue (Finance 2) Limited | Financial services | 2017 |
| Hollyblue Healthcare (Amore) Limited | Health & social care | 2015 |
| Hollyblue Healthcare (Carrick Glen) Limited | Health & social care | 2015 |
| Hollyblue Healthcare (Finance) Limited | Financial services | 2016 |
| Hollyblue Healthcare (Gisburne Park) Limited | Health & social care | 2015 |
| Hollyblue Healthcare (London) Limited | Health & social care | 2015 |
| Hollyblue Healthcare (Millbrow) Limited | Health & social care | 2016 |
| Hollyblue Healthcare (Norton Lees) Limited | Health & social care | 2019 |
| Hollyblue Healthcare (Red Hill) Limited | Health & social care | 2016 |
| Hollyblue Healthcare (Spring) Limited | Health & social care | 2015 |
| Hollyblue Healthcare (ST. Georges) Limited | Health & social care | 2014 |
| Hollyblue Healthcare (Voyage Care) Limited | Health & social care | 2015 |
| Holmcroft Cabins Ltd | Manufacturing | 2021 |
| Holme Bay Plumbing & Heating Ltd | Construction | 2022 |
| Holme Croft Residents Limited | Water & waste | 2000 |
| Holme Eden (the Walled Garden) Management Limited | Households | 2005 |
| Holme Heads Barber Ltd | Other services | 2025 |
| Holme Software Limited | Information & communication | 2019 |
| Holmegate Farms Limited | Agriculture & fishing | 1996 |
| Holmes Mill Dairy Limited | Agriculture & fishing | 2021 |
| Holmes Project Management Solutions Ltd | Construction | 2025 |
| Holmview Ltd | Agriculture & fishing | 2005 |
| Holton Road 140A Limited | Real estate | 2018 |
| Home & More Interiors Limited | Wholesale & retail | 2022 |
| Home Buyers Cumbria Limited | Real estate | 2018 |
| Home Carpets by Neil Mcbrearty Limited | Wholesale & retail | 2012 |
| Home FIX Computers Limited | Other services | 2022 |
| Home TAN Limited | Administrative & support | 2025 |
| Homecoming Lettings Ltd | Real estate | 2026 |
| Homeplan Kitchens Limited | Construction | 2019 |
| Homeplan Solutions Ltd | Professional & scientific | 2020 |
| Homes Cumbria Limited | Real estate | 2017 |
| Homesearch Direct (Carlisle) Ltd | Real estate | 2014 |
| Homesteads Executive Services Ltd | Transport & logistics | 2025 |
| Homesteads of Cumbria Limited | Construction | 1990 |
| Hometrust Care EOT Limited | Financial services | 2025 |
| Honestmade Ltd | Wholesale & retail | 2020 |
| Honeyblossom Developments Limited | Construction | 2025 |
| Honeycomb Logic Limited | Information & communication | 2016 |
| Hoodborn Ltd | Wholesale & retail | 2026 |
| Hoof Holdings Ltd | Transport & logistics | 2023 |
| Hope @ Harker Grange Ltd | Hospitality | 2022 |
| Hope Inside Limited | Information & communication | 2026 |
| Hope-Fa Holdings Ltd | Financial services | 2026 |
| Hoperogers Limited | Wholesale & retail | 2006 |
| Hopper Developments Ltd | Construction | 2021 |
| Hopper Ltd | Real estate | 2020 |
| Horseboxes-Uk Limited | Wholesale & retail | 2023 |
| Horses for Happiness and Health CIC | Education | 2025 |
| Horsleys of Abbeytown Limited | Administrative & support | 2005 |
| Hortology Ltd | Wholesale & retail | 2016 |
| Hosket Hill ARB Ltd | Administrative & support | 2026 |
| Hospice at Home Carlisle and North Lakeland | Health & social care | 2002 |
| Hot Dog Care Limited | Health & social care | 2024 |
| Hot TUB Services Limited | Arts & recreation | 2008 |
| Hotel Media Ltd. | Hospitality | 2009 |
| House of Holistics Limited | Administrative & support | 2016 |
| House of Malt Limited | Wholesale & retail | 2023 |
| House of Slater Limited | Other services | 2017 |
| House of Stone Limited | Households | 2007 |
| HOW END Farms | Agriculture & fishing | 2008 |
| HOW END Renewables Limited | Administrative & support | 2013 |
| HOW High Scaffolding Ltd | Construction | 2022 |
| Howard Cooper Ltd | Agriculture & fishing | 2018 |
| Howard Court Management (Carlisle) Limited | Hospitality | 2003 |
| Howfield Dairy | Agriculture & fishing | 2011 |
| HOY Motion Pictures Ltd | Information & communication | 2026 |
| Hraymortgages Ltd | Administrative & support | 2025 |
| Hrayproperties Ltd | Real estate | 2023 |
| Htair Limited | Information & communication | 2024 |
| HTE Limited | Professional & scientific | 2011 |
| Hub Health and Fitness Ltd | Other services | 2020 |
| HUE Media Limited | Information & communication | 2021 |
| Hughes Risk Management Limited | Professional & scientific | 2007 |
| Hummingbird Garden Design Limited | Administrative & support | 2019 |
| Hunley Bank Limited | Agriculture & fishing | 2005 |
| Hunslet Place Management Limited | Households | 2014 |
| Hunter Engineering (Carlisle) Ltd | Professional & scientific | 2023 |
| Hunter HR Limited | Administrative & support | 2025 |
| Hunter Welding Consultancy & Training Ltd | Professional & scientific | 2022 |
| Hunters House Rentals Limited | Real estate | 2016 |
| Huntington Property Limited | Construction | 2017 |
| Huntlogan Management Ltd | Hospitality | 2026 |
| Hutchco Ltd | Financial services | 2025 |
| Hutton Court Management Limited | Households | 1984 |
| Hybrid Publications Limited | Information & communication | 2024 |
| Hyde Design Ltd | Professional & scientific | 2023 |
| Hyde Harrington Limited | Professional & scientific | 2000 |
| Hydroflow Environmental Services Ltd | Administrative & support | 2017 |
| Hydrology-Uk Ltd | Professional & scientific | 1995 |
| Hysoft Ltd | Information & communication | 2008 |
| Hystore Ltd | Transport & logistics | 2021 |
| I G Lawson Limited | Construction | 2003 |
| I J & a E Henderson Limited | Agriculture & fishing | 2006 |
| I Love Cafe Carlisle Ltd | Hospitality | 2026 |
| I Michalakis-Cumbria Breast Care Limited | Health & social care | 2021 |
| I&C Services Limited | Professional & scientific | 2018 |
| I&L Transport & Haulage Ltd | Transport & logistics | 2026 |
| I'M Biotechnology Limited | Wholesale & retail | 2025 |
| I-Net Systems Limited | Administrative & support | 1997 |