| Higher People Ltd | Administrative & support | 2019 |
| Higher UP Limited | Administrative & support | 2010 |
| Higherford Builders Ltd | Construction | 2017 |
| Higherford Heating Ltd | Construction | 2021 |
| Highrise Capital Estates Ltd | Real estate | 2026 |
| Hightower International Ltd | Wholesale & retail | 2020 |
| Hijack London Ltd | Wholesale & retail | 2025 |
| Hilal Preston Ltd | Health & social care | 2022 |
| Hill's Premier Polymers Ltd | Manufacturing | 2007 |
| Hillingdon Ltd | Wholesale & retail | 2014 |
| Hilltop Cleaning Services Ltd | Administrative & support | 2023 |
| Hilton & Horsfall Lettings Limited | Real estate | 2007 |
| Hilton & Horsfall Ltd | Real estate | 2014 |
| Hilton & Horsfall Sales Limited | Real estate | 2009 |
| Himalayan Motors UK Ltd | Wholesale & retail | 2025 |
| HIT the Belly Ltd | Hospitality | 2020 |
| HK and Co Management Partners Ltd | Real estate | 2024 |
| HM GIS Limited | Wholesale & retail | 2012 |
| HM Keyholders Ltd. | Real estate | 2025 |
| Hmct Property Ltd | Real estate | 2024 |
| HNA Estates Ltd | Real estate | 2025 |
| HNA NW Property Limited | Real estate | 2025 |
| HNR Rathore Ltd | Manufacturing | 2026 |
| HNZ Estates Limited | Real estate | 2024 |
| Hodder Valley Logs Ltd | Wholesale & retail | 2025 |
| Hodges Agile POP Ltd | Information & communication | 2022 |
| Holgate House Care and Recovery in the Community CIC | Health & social care | 2018 |
| Holgate House Limited | Health & social care | 1998 |
| Hollin Villas Ltd | Professional & scientific | 2014 |
| Hollowtrees Limited | Professional & scientific | 2024 |
| Holly & Castle Limited | Administrative & support | 2010 |
| Holly & Castle Solutions Limited | Administrative & support | 2020 |
| Hollywood Corporate Services Holdings Limited | Financial services | 2018 |
| Hollywood Recipient Limited | Financial services | 2024 |
| Hollywood Service Company Limited | Financial services | 2024 |
| Holme Park Investments Limited | Financial services | 2010 |
| Holts Fish & Chips Ltd | Hospitality | 2026 |
| Home First Interiors Limited | Wholesale & retail | 2017 |
| Home Haven Housing Limited | Real estate | 2025 |
| Home of Social Ltd | Professional & scientific | 2024 |
| Home Sterilization Clean Service Ltd | Administrative & support | 2026 |
| Home-Start in East Lancashire Ltd | Health & social care | 2004 |
| Honee Ltd | Wholesale & retail | 2019 |
| Honeycomb Theatre CIC | Arts & recreation | 2026 |
| Horizon Carpentry and Joinery Ltd | Manufacturing | 2025 |
| Horizon IMS Limited | Administrative & support | 2011 |
| Horne Media Ltd | Professional & scientific | 2023 |
| Hospitality Growth Benefits Ltd | Professional & scientific | 2023 |
| Hot Pink Haberdashery Limited | Wholesale & retail | 2014 |
| Hot Shots Bar Ltd | Hospitality | 2025 |
| House of Hair Ltd | Other services | 2024 |
| House of Haya Nelson Ltd | Wholesale & retail | 2026 |
| House of Pensions Limited | Financial services | 2014 |
| House Purchased Fast Ltd | Real estate | 2016 |
| Househomming Ltd | Wholesale & retail | 2025 |
| Housing Estates Group Limited | Financial services | 2019 |
| Housing Estates Limited | Real estate | 2015 |
| Housing Nelson Limited | Construction | 1998 |
| Houston Business Services Limited | Professional & scientific | 2001 |
| Howorths (Nelson) Limited | Financial services | 1924 |
| HPM (Nelson) Limited | Financial services | 2025 |
| HQS Accountants Limited | Professional & scientific | 2018 |
| HRC POD Ltd | Professional & scientific | 2023 |
| HRH Maintenance Limited | Construction | 2016 |
| HSA Optical Limited | Health & social care | 2021 |
| HSH Car Sales Ltd | Wholesale & retail | 2024 |
| Hslrealestate Ltd | Real estate | 2022 |
| HSN Autos Limited | Wholesale & retail | 2026 |
| HSS Academy Ltd | Education | 2022 |
| HU Gallery Community Interest Company | Information & communication | 2008 |
| Hubaib Limited | Wholesale & retail | 2021 |
| Huberam Ltd | Wholesale & retail | 2025 |
| Hughes & Co Limited | Professional & scientific | 2010 |
| Hughes Accountants Limited | Professional & scientific | 2024 |
| Humarian Ltd | Wholesale & retail | 2025 |
| Hunter-Chase Associates Limited | Manufacturing | 2018 |
| Hurulain Ltd | Wholesale & retail | 2024 |
| Hussain & Sons Property Management Services Limited | Real estate | 2025 |
| Hussainy Motors Limited | Wholesale & retail | 2019 |
| Huth Properties Ltd | Real estate | 2022 |
| HZ Luxe Ltd | Wholesale & retail | 2024 |
| HZD 2001 Limited | Transport & logistics | 2025 |
| I & M Lets Limited | Real estate | 2024 |
| I Sell Property Ltd | Real estate | 2021 |
| IA Deliveries Ltd | Transport & logistics | 2025 |
| IA Legal Consultancy Limited | Professional & scientific | 2020 |
| IA Social Ltd | Information & communication | 2023 |
| IA.11 Consultancy Limited | Professional & scientific | 2019 |
| IAH Medical Ltd | Health & social care | 2021 |
| Ibms Northwest Ltd | Construction | 2025 |
| Ibrahim Hussain Limited | Administrative & support | 2007 |
| Ibrar's Optics Limited | Wholesale & retail | 2023 |
| IBS Property Ltd | Real estate | 2021 |
| Ibworld Ltd | Health & social care | 2023 |
| Icare Solutions NW Ltd | Health & social care | 2017 |
| Ice on a Trike Ltd | Hospitality | 2025 |
| Iceberg Supplements Ltd. | Wholesale & retail | 2012 |
| Icon Group Ltd | Information & communication | 2018 |
| Iconnect Cctv Limited | Administrative & support | 2017 |
| ID Financial Consultancy Limited | Financial services | 2014 |