| Haig Rentals Limited | Real estate | 2022 |
| Hallows Group Limited | Construction | 2025 |
| Handglade Management Company Limited | Households | 2026 |
| Handley Studios Ltd | Information & communication | 2023 |
| Haptek Ltd | Manufacturing | 2026 |
| Harabeth Home Limited | Wholesale & retail | 2026 |
| Hard Dance Reloaded Ltd | Arts & recreation | 2025 |
| Hardwood Logs & Supplies Ltd | Agriculture & fishing | 2025 |
| Harper Lets Properties Limited | Real estate | 2025 |
| Harprule Limited | Extraterritorial | 1976 |
| Harrington Land (Management) Limited | Construction | 2014 |
| Harrison's Garage Services Limited | Wholesale & retail | 2011 |
| Harrop Estates Ltd | Real estate | 2016 |
| Hartington Creamery Ltd | Manufacturing | 2023 |
| Hartwood Estates Limited | Construction | 1976 |
| Hartwood Ltd | Extraterritorial | 2022 |
| Hartwood Projects Limited | Construction | 2015 |
| Harwood Holdings Limited | Financial services | 2021 |
| Hatton Systems Limited | Manufacturing | 2006 |
| Hawksley Holdings Limited | Real estate | 2021 |
| Hayes & Bennett Properties Limited | Construction | 2015 |
| Hayes Hire Limited | Administrative & support | 2017 |
| HB4D Leeds Limited | Health & social care | 2024 |
| Headstart Drinks Limited | Manufacturing | 2006 |
| Heart Jewel Kadampa Buddhist Centre | Education | 2008 |
| Heart of the Peak Commercials Ltd | Wholesale & retail | 2019 |
| Hearthstone Farm Limited | Agriculture & fishing | 1986 |
| Heartwood Social Farming Centre C.I.C. | Agriculture & fishing | 2022 |
| Heat Serve Limited | Construction | 2012 |
| Heatherdene Happy Hounds Ltd | Agriculture & fishing | 2025 |
| Heavy Energy Ltd | Information & communication | 1997 |
| Hecate Arts Ltd | Arts & recreation | 2017 |
| Heirloom Family Tree Services Limited | Professional & scientific | 2023 |
| Hello Gyro Ltd | Arts & recreation | 2019 |
| Henry 88 Limited | Hospitality | 2016 |
| Henry Davison 2 Limited | Extraterritorial | 2011 |
| Here and NOW HR UK Ltd | Professional & scientific | 2018 |
| Heritage Digital Ltd | Information & communication | 2016 |
| Hestia Books Ltd | Wholesale & retail | 2025 |
| Hetu Limited | Professional & scientific | 2017 |
| Hevasure Ltd | Professional & scientific | 2014 |
| Hide & Peak Cottages Ltd | Hospitality | 2023 |
| High Edge Properties Limited | Construction | 2017 |
| High Performance Computing Limited | Information & communication | 2024 |
| Hill Crest Projects Limited | Professional & scientific | 2009 |
| Hinton Landscapes Ltd | Administrative & support | 2019 |
| Hive by Milestone Ltd | Construction | 2024 |
| HJ Enthoven Pension Trustee Limited | Financial services | 2023 |
| HJE Limited | Manufacturing | 1993 |
| HJG Management Ltd | Professional & scientific | 2024 |
| Holding Space Together CIC | Education | 2026 |
| Hollow Tree Brewing Co. Ltd | Manufacturing | 2018 |
| Holloway Community Shop CIC | Wholesale & retail | 2023 |
| Holly Bank Court (Crich) Management Company Limited | Households | 1996 |
| Holmes Construction Consultants Limited | Professional & scientific | 2025 |
| Holymoorside School Management Ltd | Administrative & support | 2005 |
| Home by Milestone Ltd | Construction | 2014 |
| Home Garden Restoration Limited | Administrative & support | 2016 |
| Home Products Basketware Limited | Wholesale & retail | 2018 |
| Homesford Development Limited | Real estate | 2018 |
| Homestead Holdings (Derbyshire) Limited | Hospitality | 2005 |
| Honeybank Limited | Agriculture & fishing | 2025 |
| Honeyinn Ltd | Professional & scientific | 2025 |
| Hopkinson Engineering Company Limited | Construction | 2022 |
| Hopkinson Group Limited | Professional & scientific | 2023 |
| Hopton Developments Limited | Construction | 2003 |
| Hopton Hall Gallery Limited | Wholesale & retail | 2022 |
| Hopton Hall Limited | Real estate | 2020 |
| Hopton Property Company Limited | Construction | 1997 |
| Horne Brothers Funeral Directors Limited | Extraterritorial | 2024 |
| Horseshoe Management Company Limited | Households | 2012 |
| Hound HUT Dog Spa Ltd | Other services | 2021 |
| Hound HUT Mickleover Ltd | Other services | 2026 |
| House of Millan Ltd | Construction | 2026 |
| House of Simpsons Ltd | Hospitality | 2026 |
| Housebreeze Limited | Real estate | 2001 |
| Hoysters Limited | Hospitality | 2013 |
| HRC Industrial Cladding Limited | Construction | 2003 |
| HU Sports Ltd | Information & communication | 2024 |
| HUB3 Limited | Professional & scientific | 2005 |
| Human Made Limited | Information & communication | 2010 |
| Humber Dock HU Ltd | Hospitality | 2018 |
| Hunts Quality Cooked Meats Limited | Manufacturing | 2010 |
| Huracan Apparel Limited | Wholesale & retail | 2024 |
| Hurker Engineering Services Limited | Professional & scientific | 2004 |
| Hurst Consulting Services Ltd | Professional & scientific | 2023 |
| Hurst Farm Social Club C.I.C. | Hospitality | 2017 |
| Hurst Home Development Ltd | Real estate | 2019 |
| Hurstdale Ltd | Construction | 2026 |
| HWP Trading Ltd | Wholesale & retail | 2019 |
| Hycliffe Ltd | Construction | 2024 |
| Hydeout BBQ Limited | Hospitality | 2021 |
| I&M Farm Shop Limited | Wholesale & retail | 2021 |
| I. W. Hitchcock Limited | Transport & logistics | 2014 |
| I7CP Ltd | Real estate | 2023 |
| IAN Atkin Electrical Limited | Manufacturing | 2014 |
| IAN. Strange. (Tansley) Limited | Wholesale & retail | 1977 |
| IB Projects Limited | Construction | 2013 |
| Iceland Holidays Ltd | Administrative & support | 2019 |
| Iceni Business Solutions Limited | Professional & scientific | 2001 |