| H & B Barbers Ltd | Other services | 2024 |
| H & D Butcher's Limited | Manufacturing | 2021 |
| H & D Market Limited | Wholesale & retail | 2019 |
| H & H Hull Limited | Hospitality | 2020 |
| H & K Quids in Limited | Wholesale & retail | 2019 |
| H & L Property Limited | Real estate | 2018 |
| H & L Residential Property Ltd | Real estate | 2022 |
| H & N Food Limited | Hospitality | 2016 |
| H & Oats Roofing Services Limited | Construction | 2019 |
| H & P Freightways Limited | Transport & logistics | 1991 |
| H & P Group Holdings Ltd | Transport & logistics | 2022 |
| H & P Holdings (2016) Limited | Transport & logistics | 2016 |
| H & R Healthcare Limited | Administrative & support | 2006 |
| H & S Roofing Contractors Limited | Construction | 2019 |
| H and C Events Ltd | Arts & recreation | 2025 |
| H Fmcg UK Ltd | Wholesale & retail | 2023 |
| H H Yorkshire Limited | Arts & recreation | 2004 |
| H Investment Limited | Real estate | 2025 |
| H M L Motors (Hull) Ltd | Wholesale & retail | 2026 |
| H O B (Hull) Ltd | Other services | 2024 |
| H Packaging Ltd | Wholesale & retail | 2023 |
| H S a H Limited | Professional & scientific | 1982 |
| H U TAN Hull Ltd | Other services | 2025 |
| H&D Vision Limited | Hospitality | 2023 |
| H&F Property Co. Hull Ltd | Real estate | 2024 |
| H&H Premier Properties Limited | Real estate | 2020 |
| H&H Premier Trading Limited | Real estate | 2020 |
| H&J Inspection Ltd | Professional & scientific | 2014 |
| H&J Property Ltd | Real estate | 2023 |
| H&N Style Ltd | Wholesale & retail | 2025 |
| H&P Healthcare Ltd | Administrative & support | 2026 |
| H&Pk Hull Ltd | Wholesale & retail | 2026 |
| H&Pk Ltd | Wholesale & retail | 2023 |
| H&S Subsistence Limited | Professional & scientific | 2018 |
| H&Sr Limited | Construction | 2025 |
| H-Lr Electrical Ltd | Construction | 2026 |
| H-M Aggregates Ltd | Construction | 2025 |
| H. Pontifex & Sons Limited | Manufacturing | 1893 |
| H. W. Dodds Limited | Professional & scientific | 2023 |
| H.A. Lambert (Farmers) Limited | Agriculture & fishing | 1953 |
| H.B. Johnson & Co. Limited | Agriculture & fishing | 1978 |
| H.E.M Control Solutions Ltd | Professional & scientific | 2008 |
| H.E.S.H. Computer Services Ltd | Other services | 1994 |
| H.J. Greenwood Limited | | 1943 |
| H.N Joseph Properties Ltd | Real estate | 2024 |
| H.S.S. Lane and Gate Company Limited | Real estate | 2006 |
| H.T.Brown Limited | Wholesale & retail | 2019 |
| H.U.U. Services Limited | Wholesale & retail | 2000 |
| H2MO Ltd | Real estate | 2023 |
| H2O Swim School Ltd | Education | 2019 |
| Habib Properties (Hull) Limited | Real estate | 2025 |
| Hackett & Williamson Limited | Manufacturing | 1981 |
| Hacm-Barbers Ltd | Other services | 2026 |
| Hadi Care Bradford Ltd | Health & social care | 2024 |
| Haifeng Trading Co., Ltd | Wholesale & retail | 2021 |
| Haiku Learning Ltd | Administrative & support | 2023 |
| Hailstone Apex Mechanical Ltd | Construction | 2026 |
| Hair and Beauty Principles Limited | Other services | 2019 |
| Hair Glowry Ltd | Manufacturing | 2026 |
| Hair Solutions (Hull) Limited | Other services | 2012 |
| Hairsine Holdings Limited | Professional & scientific | 2008 |
| Hairsine Trailers Ltd | Wholesale & retail | 1998 |
| Halabja a Ltd | Real estate | 2025 |
| Haldco Ltd | Real estate | 2025 |
| Haldenby Consultancy Ltd | Information & communication | 2010 |
| Haley Property Investments Ltd | Real estate | 2020 |
| Halgeo Limited | Real estate | 2021 |
| Halgeo Properties Ltd | Real estate | 2024 |
| Hall Road Rangers C.I.C. | Education | 2024 |
| Hallgate Garden Centre Ltd | Wholesale & retail | 2022 |
| Halliday PUB Co Limited | Hospitality | 2023 |
| Hallmark Door Systems Group Limited | Manufacturing | 2021 |
| Hallmark Doors Group Limited | Manufacturing | 2024 |
| Hallmark Doors Limited | Manufacturing | 2012 |
| Hallmark Group Holdings Limited | Manufacturing | 2016 |
| Hallmark Panels Limited | Manufacturing | 1995 |
| Hallrepairservices Limited | Wholesale & retail | 2025 |
| Halo Barber 1 Limited | Other services | 2021 |
| Halo Inspection Services Limited | Professional & scientific | 2012 |
| Halocycle Limited | Water & waste | 2020 |
| Halsham Pet Crematorium Ltd | Other services | 2019 |
| Halton Holdings Ltd | Financial services | 2023 |
| Halton Trades Ltd | Wholesale & retail | 2025 |
| Hamber Tech Solutions Ltd | Information & communication | 2025 |
| Hamburg Technology Park Property Management Company Limited | Households | 2006 |
| Hamers Solicitors LLP | | 2010 |
| Hamilton HR Solutions Ltd | Administrative & support | 2014 |
| Hamilton Quantity Surveying Limited | Professional & scientific | 2024 |
| Hammer & Anvil Creative Ironworks Ltd | Manufacturing | 2018 |
| Hammond Homes (Management Company) Ltd | Households | 2019 |
| Hammond Homes (Scartho Top) Ltd | Construction | 2021 |
| Hammond Homes Holdings Ltd | Financial services | 2022 |
| Hamoni Healthcare Ltd | Wholesale & retail | 2019 |
| Hamoni Investments Ltd | Real estate | 2024 |
| Hamoni Ventures Ltd | Real estate | 2026 |
| Hamqas Ltd | Wholesale & retail | 2026 |
| Hamsard 3731 Limited | Professional & scientific | 2023 |
| Hamworthy Heating Limited | Extraterritorial | 1988 |
| Hanar Hull Limited | Wholesale & retail | 2025 |
| Hanari Trades Limited | Construction | 2025 |