| Hayes Horology Ltd | Wholesale & retail | 2025 |
| Hayton Home Heating Limited | Wholesale & retail | 2025 |
| Hazan Properties Limited | Real estate | 2024 |
| Hazelwood Yorkshire Limited | Real estate | 2017 |
| HDK Projects Ltd | Real estate | 2024 |
| Head Agenda Limited | Hospitality | 2012 |
| Headspace Leeds Limited | Health & social care | 2021 |
| Heaton Avenue Management Company Limited | Households | 2024 |
| Heavenly Lotus Ltd | Health & social care | 2025 |
| Heeley Limited | Construction | 2026 |
| Helen Homes Limited | Real estate | 2024 |
| Helen's Own International Ltd | Wholesale & retail | 2019 |
| Hennie Penny's Chicken Limited | Hospitality | 2024 |
| Hexguard Security Limited | Administrative & support | 2025 |
| Heywood Stuart Construction Ltd | Construction | 2022 |
| Hibernia Beds Ltd | Wholesale & retail | 2025 |
| Higgins & Hobson Property Limited | Real estate | 2025 |
| High Rising Ltd | Real estate | 2025 |
| Higher UP Club Ltd | Health & social care | 2021 |
| Higher UP Developments Ltd | Real estate | 2020 |
| Higher UP Investments Ltd | Real estate | 2016 |
| Higher UP Play Ltd | Health & social care | 2018 |
| Higher UP Sales & Lettings Ltd | Real estate | 2022 |
| Highfield Property Maintenance (Yorkshire) Limited | Construction | 2026 |
| Hightown Interiors Limited | Construction | 2021 |
| Hillas Motor Traders Ltd | Wholesale & retail | 2026 |
| Hillside Fabrications Limited | Manufacturing | 2018 |
| Hinckley Project 1 Ltd | Real estate | 2024 |
| Hipercapital Finance Ltd | Professional & scientific | 2021 |
| Hire UP Solutions Ltd | Administrative & support | 2012 |
| Hizom Cafe Restaurant Ltd | Hospitality | 2025 |
| HJL Cleaning Ltd | Administrative & support | 2026 |
| HK Commercial Sales Ltd | Wholesale & retail | 2024 |
| HLK Environmental Ltd | Construction | 2016 |
| Hlridge Limited | Health & social care | 2026 |
| Holdale Investments Limited | Financial services | 2021 |
| Holdsworth and SON Couriers Ltd | Transport & logistics | 2023 |
| Holdsworth ST Management Company Ltd | Households | 2025 |
| Holmewood Productions Limited | Arts & recreation | 2024 |
| Home Cooked Food Ltd | Hospitality | 2026 |
| Home Envy Limited | Manufacturing | 2026 |
| Home From Home Bradford Ltd | Administrative & support | 2025 |
| Home Furnishings U.K. Limited | Manufacturing | 2003 |
| Homelium Care Ltd | Health & social care | 2021 |
| Homelium Living Ltd | Health & social care | 2024 |
| Homeshield Ltd | Administrative & support | 2019 |
| Homesmart Property Management Limited | Real estate | 2014 |
| Hona Medical Ltd | Health & social care | 2013 |
| Honest Packaging Limited | Wholesale & retail | 2025 |
| Hopewells Pet and Animal Feeds Limited | Wholesale & retail | 2004 |
| Hopkins Butchers Ltd | Wholesale & retail | 2019 |
| Horizon Care Homes Limited | Health & social care | 2007 |
| Horizon Driveways Ltd | Construction | 2024 |
| Horsforth Beauty Limited | Other services | 2009 |
| Hotelbar Aire Street Limited | Hospitality | 2018 |
| Hour Content Studio Limited | Information & communication | 2025 |
| House-Av Ltd | Construction | 2021 |
| HOW Charming Ltd | Manufacturing | 2020 |
| Howard Bottomley Limited | Real estate | 2018 |
| Howarths HR and Employment Law (Holdings) Limited | Financial services | 2021 |
| Howarths HR and Employment Law Limited | Administrative & support | 2003 |
| Howie Financial Consultants Limited | Administrative & support | 2015 |
| Hpcareers Limited | Administrative & support | 2014 |
| HPL Lettings Limited | Real estate | 2015 |
| HQC Paints Ltd | Manufacturing | 2026 |
| HR Foods Ltd | Manufacturing | 2025 |
| HS Merchant Services Ltd | Professional & scientific | 2025 |
| HSF Property Agency Limited | Real estate | 2024 |
| HSG Pump Services Limited | Manufacturing | 1997 |
| HSG Surveys Ltd | Professional & scientific | 2015 |
| Hsvp Ltd | Construction | 2015 |
| Htvs Leeds Limited | Wholesale & retail | 2014 |
| HUB26 Limited | Real estate | 2017 |
| Hudson Construction (Yorkshire) Limited | Construction | 2024 |
| Hukd Charms Ltd | Manufacturing | 2025 |
| Hummingbird Timber Ltd | Construction | 2022 |
| Humpleby Construction Limited | Construction | 2002 |
| Hunsworth Food Service Design Ltd | Professional & scientific | 2022 |
| Hunts Entertainment Limited | Health & social care | 2025 |
| Hybrid Car Hire Ltd | Administrative & support | 2019 |
| Hybrid Controls Solutions Ltd | Professional & scientific | 2020 |
| Hykk Solutions Limited | Manufacturing | 2019 |
| I & J Property (Wakefield) Ltd | Real estate | 2025 |
| I Analytical Ltd | Professional & scientific | 2017 |
| I Care & Clean Limited | Administrative & support | 2025 |
| I Effendi Limited | Extraterritorial | 2025 |
| Ibath Limited | Wholesale & retail | 2014 |
| Ibbersons Precision Engineering Ltd | Manufacturing | 2021 |
| Ibby's & Racca Green Fast Food Ltd | Hospitality | 2018 |
| ICF Structures Limited | Construction | 2019 |
| ICP (Heckmondwike) Limited | Real estate | 2003 |
| Ideal Care Options Ltd | Health & social care | 2014 |
| Ideal Corporate Solutions (Yorkshire) Limited | Professional & scientific | 2007 |
| IH3D Limited | Professional & scientific | 2001 |
| Ikhlas Medical Care Ltd | Health & social care | 2024 |
| Image 3D Limited | Professional & scientific | 2009 |
| Imagine Louth CIC | Arts & recreation | 2024 |
| Impact Dent Repair Limited | Wholesale & retail | 2023 |
| Impenetrable Security Limited | Administrative & support | 2025 |
| Inches Curtains Limited | Wholesale & retail | 2003 |