| Harriet AMY Ltd | Other services | 2025 |
| Harris Tooling Ltd | Professional & scientific | 2021 |
| Harrison Leisure Acquisitions Limited | Administrative & support | 2011 |
| Harry’S Kitchen YKS Ltd | Hospitality | 2024 |
| Hartley Court (Bridlington) Limited | Households | 1967 |
| Harvey's Waste Removal Limited | Water & waste | 2021 |
| Harx Joinery Limited | Construction | 2025 |
| Hasholme Grange Farm Limited | Real estate | 2013 |
| Hatton College Ltd | Arts & recreation | 2021 |
| Haversham Property Sourcing Limited | Real estate | 2025 |
| Haxton Developments Ltd | Construction | 2013 |
| HC Online Ltd | Other services | 2021 |
| Hcas Holiday Limited | Hospitality | 2025 |
| Headland Hideaways Limited | Hospitality | 2025 |
| Headlands (Flamborough) Limited | Hospitality | 2003 |
| Headrow Hair & Beauty Salon Ltd | Other services | 2024 |
| Healthy Hot Tubs Ltd | Manufacturing | 2013 |
| Hebden Outdoor Services Ltd | Construction | 2024 |
| Hedon Hire Limited | Construction | 1992 |
| Hello EGG Ltd | Wholesale & retail | 2020 |
| Helmed Ventures Ltd | Professional & scientific | 2022 |
| Hemingway Joinery Limited | Construction | 2015 |
| Hemsley Holidays Limited | Hospitality | 2006 |
| Henlow Ventures Limited | Extraterritorial | 2016 |
| Herald Property Management Limited | Real estate | 2004 |
| Herbgarden Chinese Medical Limited | Health & social care | 2014 |
| Heritage Scaffolding (Yorkshire) Limited | Construction | 2022 |
| Heswoo Investments Ltd | Health & social care | 2017 |
| Hewett, Hewett & Hewett Limited | Extraterritorial | 1997 |
| Hexon Limited | Other services | 2002 |
| Hfta Limited | Professional & scientific | 2004 |
| Hi-Tech Brid Ltd | Wholesale & retail | 2020 |
| Hideaway @ the House of Food Ltd | Hospitality | 2024 |
| Hideaway Holiday Parks Group Ltd | Financial services | 2026 |
| Hideaway Holiday Parks Ltd | Hospitality | 2022 |
| Hideaway Productions Ltd | Information & communication | 2026 |
| Higgins Property Group Ltd | Real estate | 2025 |
| High Mountain Guides Ltd | Administrative & support | 2012 |
| Highgate Care Services (2025) Ltd | Administrative & support | 2018 |
| Highgate Care Services (North) Ltd | Administrative & support | 2025 |
| Highgate Care Services (Yorkshire) Ltd | Health & social care | 2017 |
| Highgate Care Services Ltd | Health & social care | 2007 |
| Hill Top Agricultural Limited | Agriculture & fishing | 2016 |
| Hill Top Solutions Limited | Administrative & support | 2009 |
| Hire Linen Whitby Ltd | Other services | 2018 |
| HLG Acquisitions Limited | Hospitality | 2018 |
| Holiday Park Electrical Ltd | Construction | 2022 |
| Holihomes Holiday Home Sales Ltd | Real estate | 2022 |
| Holland Bridlington Limited | Arts & recreation | 2020 |
| Hollie J (Abbott) Limited | Agriculture & fishing | 2016 |
| Hollie J Fishing Limited | Agriculture & fishing | 2006 |
| Holly Lodge (Bridlington) Limited | Health & social care | 2008 |
| Holmes Adult Carer Service Limited | Health & social care | 2016 |
| Home and Away Guesthouse Ltd | Hospitality | 2023 |
| Home Cctv & Alarms Ltd | Administrative & support | 2023 |
| Home Cctv Ltd | Administrative & support | 2016 |
| Hong YI 88 Ltd | Hospitality | 2024 |
| Hook and Parrot Limited | Hospitality | 2011 |
| Horizon Fencing Limited | Administrative & support | 2022 |
| Hornsea Caravan Park Limited | Extraterritorial | 2007 |
| Hornsea Leisure Limited | Hospitality | 2008 |
| Hornseaip Limited | Wholesale & retail | 2022 |
| Hospitality Relief Staff Limited | Hospitality | 2012 |
| Hot Slots Limited | Arts & recreation | 2017 |
| Hot TUB & Spa Services Ltd | Manufacturing | 2017 |
| House of Candie Tricky Treats Ltd | Hospitality | 2025 |
| Housing Finance Limited | Professional & scientific | 2001 |
| HSN 07 Limited | Extraterritorial | 2012 |
| HSN 09 Limited | Real estate | 2012 |
| Hudson Administration Services Limited | Professional & scientific | 2013 |
| Hudson Blue Limited | Professional & scientific | 2013 |
| Hudson CIS (GB) Limited | Professional & scientific | 2017 |
| Hudson Contract Limited | Professional & scientific | 2016 |
| Hudson Contract Services Limited | Extraterritorial | 2020 |
| Hudson Employment Services Limited | Professional & scientific | 2013 |
| Hudson Freelance Limited | Professional & scientific | 2016 |
| Hugh Daly Caravans Limited | Wholesale & retail | 2020 |
| Hull and District Society of Model and Experimental Engineers Limited | Arts & recreation | 2013 |
| Humber Finance Limited | Administrative & support | 1955 |
| Hurrell & Mclean Seeds Limited | Wholesale & retail | 1997 |
| Hutchinson Transport Services Ltd | Transport & logistics | 2020 |
| HW Atkinson & Sons Limited | Agriculture & fishing | 1997 |
| I. & L O. Trustees Company Ltd | Professional & scientific | 2021 |
| I.D. Warters Building Contractors Limited | Construction | 2001 |
| IAN Waines Limited | Construction | 2001 |
| IBE (Yorkshire) Limited | Professional & scientific | 2022 |
| Idacom Steel Buildings Limited | Construction | 1999 |
| Ideal Building Systems Holdings Limited | Professional & scientific | 2007 |
| Ideal Building Systems Limited | Construction | 1992 |
| Ideal Roofing Limited | Construction | 2019 |
| Ideal Stencils Limited | Wholesale & retail | 2016 |
| IMF Leisure Ltd | Real estate | 2022 |
| Impartica Limited | Information & communication | 2009 |
| Imperial Property Management Limited | Real estate | 2004 |
| Import Textiles Limited | Wholesale & retail | 2003 |
| IN 2 Gear Solutions Limited | Wholesale & retail | 2010 |
| Independent Agri Parts Limited | Wholesale & retail | 2022 |
| Independent Well Examiners Limited | Professional & scientific | 2014 |
| Infinity House (Bridlington) Limited | Other services | 2013 |
| Inhouse Blinds(Bridlington) Ltd | Manufacturing | 2025 |