| Hassan's Takeaway Ltd | Hospitality | 2026 |
| Hassla Ltd | Real estate | 2025 |
| Hatfield Energy Ltd | Wholesale & retail | 2014 |
| Hatfield Installations Limited | Construction | 2026 |
| Hatfield Site Services Ltd | Administrative & support | 2021 |
| Hatful of Hollow TS Limited | Arts & recreation | 2021 |
| Hather Group Holdings Limited | Professional & scientific | 2021 |
| Hather Investments Limited | Professional & scientific | 2018 |
| Hather Plant Hire Holdings Limited | Professional & scientific | 2018 |
| Hather Plant Hire Limited | Construction | 1992 |
| Hather Plant Limited | Transport & logistics | 2019 |
| Hather Property Developments Limited | Real estate | 2018 |
| Haulage, Storage and Distribution Ltd | Transport & logistics | 2014 |
| Haus of Aesthetics Ltd | Other services | 2021 |
| Haus Properties Rotherham Limited | Real estate | 2019 |
| Hausofrejuvenation Ltd | Other services | 2025 |
| Have a Word POD Limited | Information & communication | 2020 |
| Haven Health & Beauty Wickersley Ltd | Other services | 2021 |
| Haven Hues Properties Ltd. | Hospitality | 2024 |
| Havenbrook Care Group Ltd | Financial services | 2025 |
| Havenbrook Care Ltd | Health & social care | 2025 |
| Havennest Ltd | Real estate | 2025 |
| Havenstone Estates Ltd | Real estate | 2025 |
| Havilah Endeavours Limited | Hospitality | 2020 |
| Havina International Ltd | Wholesale & retail | 2025 |
| Hawk Security Solutions (UK) Limited | Administrative & support | 2014 |
| Hawkley Leisure Limited | Construction | 2007 |
| Hawksworth Property Limited | Real estate | 2024 |
| Haychm Limited | Other services | 2020 |
| Haydn Consulting Limited | Administrative & support | 1999 |
| Hayes Joinery (Maltby) Limited | Construction | 2007 |
| Hayfield Parrott LLP | | 2024 |
| Hayley Addison Coaching Ltd | Other services | 2021 |
| Haymans Construction Ltd | Construction | 2021 |
| Haynook 2022 Ltd | Hospitality | 2023 |
| Haynook Rotherham Ltd | Hospitality | 2020 |
| Haywood Engineering Services (Barnsley) Ltd | Manufacturing | 2014 |
| Haywood Engineering Services Limited | Professional & scientific | 1996 |
| Haywood Tree Specialists Ltd | Administrative & support | 2024 |
| Hazel Bees Consulting Ltd | Professional & scientific | 2018 |
| Hazel Mount Management Company Limited | Real estate | 2005 |
| Hazelwood Developments Limited | Construction | 1994 |
| Hazzlewood Electronics Ltd | Manufacturing | 2014 |
| HB Horseley Bridge Tanks Limited | Professional & scientific | 2003 |
| HB United Ltd | Manufacturing | 2020 |
| Hbcehc Limited | Wholesale & retail | 2025 |
| HCS 83 Ltd | Transport & logistics | 2019 |
| HD Carpets and Flooring Limited | Wholesale & retail | 2017 |
| HD Haulage Ltd | Transport & logistics | 2021 |
| HD Opticare Ltd | Wholesale & retail | 2020 |
| HDG Investments Ltd | Real estate | 2016 |
| HDM Electrical Services Ltd | Construction | 2023 |
| HDO Properties Ltd | Real estate | 2025 |
| Head to TOE Care Ltd | Wholesale & retail | 2017 |
| Headliners Entertainment Ltd | Arts & recreation | 2024 |
| Headway Rotherham | Health & social care | 2002 |
| Health Beds Limited | Manufacturing | 1979 |
| Health Beds Retail Limited | Wholesale & retail | 1996 |
| Health Care Education Holdings Limited | Financial services | 2023 |
| Health Facilities Limited | Health & social care | 2011 |
| Health Leaders Services (HLS) Limited | Education | 2015 |
| Healthcare Management (International) Ltd | Professional & scientific | 2013 |
| Heam Consulting Services Ltd | Information & communication | 2018 |
| Heaps Arnold & Heaps Limited | Manufacturing | 1993 |
| Heart & Home Limited | Extraterritorial | 2012 |
| Heartfelt Care Solutions Ltd | Administrative & support | 2023 |
| Heat UP GAS Services Limited | Construction | 2019 |
| Heat Yorkshire Ltd | Construction | 2024 |
| Heatflow Cooling & Heating Ltd | Construction | 2017 |
| Heather Garth Primary School | Education | 2013 |
| Heating 4 Youu Ltd | Other services | 2026 |
| Heaton Robinson Ltd | Real estate | 2021 |
| Heavenly Scent Boutique Limited | Manufacturing | 2025 |
| Hebdidge Butchers Ltd | Wholesale & retail | 2024 |
| Hebron Services Limited | Construction | 1995 |
| Heenan Properties Limited | Real estate | 2024 |
| Heenan Purveyors Limited | Administrative & support | 2017 |
| Heidenreich Engineering Ltd | Professional & scientific | 2019 |
| Heim Property Ltd | Real estate | 2020 |
| Hekcek Ltd | Wholesale & retail | 2025 |
| Hellalows Ltd | Wholesale & retail | 2026 |
| Helliwell Construction Ltd | Construction | 2025 |
| Hellojg Limited | Health & social care | 2013 |
| Helm Homes Limited | Real estate | 2023 |
| Help I'M Getting Married Ltd | Information & communication | 2019 |
| HELP4HOMELESSVETERANS | Other services | 2012 |
| Helpful Hutch Ltd | Health & social care | 2026 |
| Helping Hand Care (Yorkshire) Limited | Other services | 2018 |
| Helping Hand Outdoor Services Ltd | Administrative & support | 2025 |
| Heltcorp Limited | Administrative & support | 2000 |
| HEM Glaze Limited | Construction | 2002 |
| Hemingway Mattingley Consulting Ltd | Information & communication | 2021 |
| Hendc Limited | Wholesale & retail | 2024 |
| Henry's Plumbing and Heating Ltd | Construction | 2020 |
| Hent Healthcare Limited | Administrative & support | 2014 |
| Hepworth Group Limited | Financial services | 2026 |
| Herbist Ltd | Wholesale & retail | 2022 |
| Herdway Ltd | Other services | 2016 |
| Heritage Plaster and Decor Ltd | Construction | 2026 |
| Heritage Products Limited | | 1987 |