| Harling Business Solutions Ltd | Professional & scientific | 2024 |
| Harold H Leese Limited | Other services | 2018 |
| Harper Creative Ltd | Professional & scientific | 2012 |
| Harpers Properties Ltd | Real estate | 2021 |
| Harrison Patios and Driveways Ltd | Construction | 2025 |
| Harry DST Limited | Manufacturing | 2019 |
| Hart Environmental Ltd | Professional & scientific | 2022 |
| Hass-Heritage Limited | Construction | 2026 |
| Hathaway Leisure Ltd | Hospitality | 2023 |
| Hawksland Limited | Professional & scientific | 1990 |
| Hazell Richards Ltd | Administrative & support | 2001 |
| Headley Dawson Estates Limited | Real estate | 2026 |
| Healthy Skin by ZOE Limited | Health & social care | 2026 |
| Heart Finance Ltd | Financial services | 2017 |
| Heart IS Home Holdings Ltd | Real estate | 2019 |
| Heart IS Home LLP | | 2019 |
| Heating Genie Limited | Professional & scientific | 2012 |
| Heavy Elephant Limited | Hospitality | 2012 |
| Hedges & Co Accountants Ltd | Professional & scientific | 2020 |
| Hedon Travel Ltd | Administrative & support | 2024 |
| Helena Haulage Limited | Manufacturing | 2018 |
| Helm Research Limited | Professional & scientific | 2017 |
| Hengate Healthcare Limited | Wholesale & retail | 2005 |
| Henley House Properties Ltd | Real estate | 2022 |
| Heritage Cars of East Yorkshire Limited | Wholesale & retail | 2019 |
| Heritage Fire Doors & Joinery Ltd | Construction | 2026 |
| Heritage Landscapes Ltd | Administrative & support | 1999 |
| Hessle Pre-School Nursery Group Limited | Health & social care | 2003 |
| Hgate Finance Limited | Financial services | 2020 |
| Hgate Holdings Limited | Financial services | 2020 |
| Higail Services Limited | Other services | 2026 |
| High Eske Ltd | Hospitality | 2024 |
| High Farm Close Management Company Ltd | Households | 2024 |
| High Green View Management Company Limited | Extraterritorial | 2010 |
| High House Businesses Ltd | Administrative & support | 2014 |
| High Street Fisheries (East Yorkshire) Limited | Hospitality | 2020 |
| High Street Property Limited | Real estate | 2006 |
| HIL Care (East Yorkshire) Limited | Health & social care | 2016 |
| Hilton Co Ventures Ltd | Real estate | 2017 |
| HIP House Limited | Real estate | 2003 |
| HLB Social Work Ltd | Health & social care | 2022 |
| HMH Yorkshire Ltd | Water & waste | 2023 |
| Hodgson-Hoy Ltd. | Administrative & support | 2017 |
| Holderness Engineering Ltd | Wholesale & retail | 2024 |
| Holderness Sprayers Limited | Agriculture & fishing | 2000 |
| Holdstock Healthcare Resources Limited | Health & social care | 2015 |
| Holdsworth House RTM Company Limited | Households | 2023 |
| Holgard Limited | Wholesale & retail | 2010 |
| Holiday Lets (Bridlington) Ltd | Hospitality | 2024 |
| Holler Marketing Limited | Professional & scientific | 2021 |
| Hollie Tree Ltd | Manufacturing | 2024 |
| Holly Close (Buckton) Management Company Limited | Households | 2021 |
| Holme Farm Court Management Company Ltd | Real estate | 2017 |
| Holmes Groundworks Limited | Construction | 2006 |
| Holt James Property Limited | Real estate | 2019 |
| Holtby Builders Ltd. | Construction | 1985 |
| Homelink Block Management Limited | Real estate | 2022 |
| Homes for Independent Lives Limited | Health & social care | 2015 |
| Homeseal Windows Yorkshire Ltd | Construction | 2011 |
| Hong KIM Ltd | Hospitality | 2025 |
| Hope Design Limited | Professional & scientific | 2017 |
| Horaman Property Ltd | Real estate | 2025 |
| Hornby Close Management Company Ltd | Households | 2025 |
| Hornsea Orchard Limited | Wholesale & retail | 2023 |
| Horsetec Limited | Agriculture & fishing | 2020 |
| Hortons Funeral Directors Ltd | Other services | 2010 |
| Hortons Funeral Services Ltd | Other services | 2014 |
| Hostavia Limited | Information & communication | 2025 |
| Hot TUB 4 Hire Hull Limited | Administrative & support | 2016 |
| Hotham Eggs Limited | Wholesale & retail | 2018 |
| Hotham Energy Limited | Energy | 2011 |
| House of Lutkin Limited | Wholesale & retail | 2026 |
| House of Storm Ltd | Professional & scientific | 2026 |
| HOW CAN I Help YOU Ltd | Professional & scientific | 2023 |
| Howdenshire PIG Company Limited | Agriculture & fishing | 2011 |
| Hoxne Developments One Ltd | Real estate | 2021 |
| HQB Vapes Ltd | Wholesale & retail | 2025 |
| HU5 Lets Ltd | Real estate | 2017 |
| Hub Commercial Finance Ltd | Financial services | 2009 |
| Hucho Properties Ltd | Real estate | 2023 |
| Hudson Court Management Limited | Households | 2001 |
| Hull Aero Club Limited | Other services | 1992 |
| Hull Building Safety Group Limited (the) | Construction | 1972 |
| Hull Motor Depot Limited | Wholesale & retail | 2014 |
| Hull Recycle & Refit Centre Ltd | Wholesale & retail | 2013 |
| Humanonomy Ltd | Professional & scientific | 2019 |
| Humber Bee's PVT Ltd | Transport & logistics | 2026 |
| Humber Fibre Links Ltd | Information & communication | 2025 |
| Humber Law Limited | Professional & scientific | 2020 |
| Humber Resin Group Ltd | Construction | 2022 |
| Humberside Chrome Laboratories Ltd | Administrative & support | 2002 |
| Humberside Doors Ltd | Wholesale & retail | 2003 |
| Humberside Homes Limited | Real estate | 2019 |
| Humberside Property Group Limited | Real estate | 2019 |
| Humbleton Holdings Ltd | Real estate | 2024 |
| Hunmanby Hall Quadrangle Management Company Limited | Households | 2000 |
| Hunsley Haulage Limited | Transport & logistics | 2002 |
| Hurn Cliffe Holdings Limited | Manufacturing | 2025 |
| HWA Worldwide Logistics Ltd | Transport & logistics | 2019 |
| Hydraheal Ltd | Manufacturing | 2008 |