| HI Installations Limited | Construction | 2021 |
| HI Light Electrical Services Ltd | Construction | 2021 |
| Hi-Lift Limited | Administrative & support | 2022 |
| Hidden Beauty of Edwinstowe Ltd | Other services | 2020 |
| Hidden GEM Limited | Real estate | 2006 |
| Hidentity Limited | Manufacturing | 2005 |
| High Oakham Service Centre Limited | Wholesale & retail | 2022 |
| High Park Industries Limited | Manufacturing | 2009 |
| High Peaks Solutions Consulting Ltd | Information & communication | 2015 |
| High Street Dental Care Limited | Health & social care | 2019 |
| High TOR Management Company Limited | Households | 2021 |
| Higher Wilcove Ltd | Hospitality | 2021 |
| Highfield Properties (Residential) Ltd | Real estate | 2013 |
| Highland Procurement Limited | Wholesale & retail | 2018 |
| Highstairs Property Limited | Real estate | 2010 |
| Highwood Management Consultancy Ltd | Professional & scientific | 2021 |
| Hillcliffe Properties Limited | Real estate | 2022 |
| Hillside H & S Training Limited | Administrative & support | 2017 |
| Hilltop Assets Limited | Professional & scientific | 2022 |
| Hilltop Dispatch Limited | Transport & logistics | 2024 |
| Hilltop Risk Management Limited | Professional & scientific | 2022 |
| Hilsinger, L.L.C. | | 2020 |
| Himalayan Global Trading Limited | Wholesale & retail | 2026 |
| Hinchliffe Accountancy Ltd | Professional & scientific | 2023 |
| Hiphop Entertainment and Security Ltd | Arts & recreation | 2016 |
| Hireflex Limited | Administrative & support | 2025 |
| Hive Fire and Security Contractors Ltd | Administrative & support | 2024 |
| Hive Installations Ltd | Hospitality | 2025 |
| Hivewave Renovation Ltd | Construction | 2025 |
| Hiyam Enabi Ltd | Health & social care | 2024 |
| HKA Properties Limited | Construction | 2008 |
| HM Safety Training Ltd | Other services | 2019 |
| HMA Shiny Hand Car Wash Limited | Administrative & support | 2022 |
| Hmda Property Developments Limited | Construction | 2025 |
| Hmharttrades Limited | Financial services | 2024 |
| HMO 4 Professionals Ltd | Construction | 2024 |
| HNH Tooling Services Limited | Professional & scientific | 2011 |
| HNJ Holdco Limited | Financial services | 2025 |
| Hogg Enterprises Limited | Wholesale & retail | 2008 |
| Hoillant Properties Limited | Real estate | 2009 |
| Hoinar Ltd | Administrative & support | 2017 |
| Holden Assets & Investments Ltd | Real estate | 2021 |
| Holden Property Lets Ltd | Real estate | 2024 |
| Holland Engineering Solutions Ltd | Professional & scientific | 2023 |
| Hollistic Medical Services Ltd | Health & social care | 2025 |
| Hollow Intelligence Limited | Professional & scientific | 2016 |
| Hollow Meadows Development Ltd | Construction | 2018 |
| Hollyhurst Residents Management Company Ltd | Households | 2024 |
| Hollywood Nails (Mansfield) Limited | Other services | 2012 |
| Holte Leisure Ltd | Wholesale & retail | 2022 |
| Holy Cannoli Nottingham Limited | Wholesale & retail | 2018 |
| Holy Rock Studios Limited | Information & communication | 2016 |
| HOM Studios Ltd | Professional & scientific | 2023 |
| Home & Business Security Solutions Ltd | Administrative & support | 2025 |
| Home and Heart Renovations Ltd | Real estate | 2025 |
| Home Castle Limited | Other services | 2020 |
| Home Construct Ltd | Construction | 2017 |
| Home Designs & Build Limited | Construction | 2014 |
| Home From Home Lettings Ltd. | Hospitality | 2018 |
| Home to Home Lettings Limited | Real estate | 2018 |
| Home-Start Mansfield | Health & social care | 2005 |
| Homeme Properties Limited | Real estate | 2024 |
| Homeprosper Ltd | Wholesale & retail | 2025 |
| Hometown Europe Ltd | Wholesale & retail | 2023 |
| Honest Inks Limited | Wholesale & retail | 2012 |
| Honeybe YOU Limited | Education | 2021 |
| Hooked on Fishing Ltd | Extraterritorial | 2020 |
| Hoot Hoot Driving School Limited | Education | 2006 |
| Hope&Serenity Care Solutions Ltd | Health & social care | 2023 |
| Hopkins (2021) LLP | | 2007 |
| Hopkins Solicitors Ltd | Professional & scientific | 2020 |
| Hopkinson Rail Contractors Ltd | Agriculture & fishing | 2024 |
| Hops Mobile Bar Limited | Hospitality | 2023 |
| Horabin Associates Limited | Professional & scientific | 2012 |
| Horsehead Properties Limited | Real estate | 2000 |
| Hose & Hydraulic Services Ltd. | Manufacturing | 2002 |
| Hospital Street (Gorbals) Limited | Administrative & support | 2013 |
| Hospitality Taverns Limited | Hospitality | 2006 |
| Hot Tuna IP Limited | Extraterritorial | 2009 |
| House of Bouquets Ltd | Wholesale & retail | 2018 |
| House of Delecia Limited | Manufacturing | 2023 |
| House of Fmiche Limited | Wholesale & retail | 2017 |
| House of Vale Ltd | Wholesale & retail | 2025 |
| HOW Electrical Solutions Ltd | Construction | 2026 |
| HP Air Limited | Construction | 2005 |
| HP Automotive Ltd | Wholesale & retail | 2024 |
| HR Motor Group Ltd | Wholesale & retail | 2025 |
| HSG Services Ltd | Administrative & support | 2018 |
| HSH Building Services Ltd | Construction | 2014 |
| HSL Direct Limited | Wholesale & retail | 2014 |
| HSN Developments Limited | Real estate | 2026 |
| HSR Ltd | Real estate | 2024 |
| HSR Property Holdings Ltd | Financial services | 2025 |
| Hssp Property Developments Ltd | Real estate | 2023 |
| HSV Cleaning Services Ltd | Administrative & support | 2026 |
| HTS Steel Limited | Construction | 2022 |
| HUA YIN Limited | Wholesale & retail | 2003 |
| Hub Properties Chesterfield Limited | Real estate | 2023 |
| Hucknall Dental Laboratory Ltd. | Health & social care | 1994 |
| Hucknall Van Hire Limited | Administrative & support | 1999 |