| H H Payne & SON Ltd. | Construction | 2002 |
| H J Fabrications Limited | Manufacturing | 2012 |
| H Q Salon Services Limited | Wholesale & retail | 2025 |
| H. & T. Labour and Vacuumation Services Ltd | Administrative & support | 2004 |
| H.M. Bastow Ltd | Wholesale & retail | 2014 |
| H2 Purus Consultancy UK Limited | Professional & scientific | 2025 |
| H7 Investments Ltd | Real estate | 2016 |
| Haelo Life Ltd | Health & social care | 2026 |
| Hainsworth Sterne & Co. Limited | Real estate | 1972 |
| Hair Tax UK Limited | Professional & scientific | 2004 |
| Halcyon Healthcare Limited | Financial services | 2003 |
| Hall & Prescott Limited | Hospitality | 2011 |
| Hallett Investments Limited | Real estate | 2012 |
| Hallfield Grange Management Company Limited | Households | 2014 |
| Hallows EVE Tattoo Ltd | Arts & recreation | 2026 |
| Hambleton Properties Limited | Real estate | 2006 |
| Hampton Gardens Management Company Limited | Households | 2020 |
| Hampton Healthcare Limited | Professional & scientific | 2016 |
| Hamsard 3492 Limited | Professional & scientific | 2018 |
| Hamsard 3493 Limited | Professional & scientific | 2018 |
| Hamshaw Investments Ltd | Professional & scientific | 2022 |
| Hancox & Sheridan Limited | Health & social care | 2025 |
| Handshaik Limited | Information & communication | 2024 |
| Handy Mann Electrics Ltd | Construction | 2017 |
| Hannah Lewis Gardens Limited | Information & communication | 2021 |
| Happy Chef Ltd | Hospitality | 2025 |
| Happy Days Greetings Limited | Manufacturing | 1993 |
| Hardland Consulting Limited | Real estate | 2023 |
| Hardless Forensic Accounting Limited | Professional & scientific | 2013 |
| Harewood Holdings Limited | Construction | 2022 |
| Harmony Health Group Ltd | Health & social care | 2023 |
| Harrogate Flooring Ltd | Manufacturing | 2021 |
| Harrogate Urology Limited | Professional & scientific | 2015 |
| Harrowells (NO224) Ltd | Financial services | 2021 |
| Harry Priestley & Sons Ltd | Construction | 2016 |
| Hartforth Homes (Developments) Limited | Construction | 2019 |
| Hartforth Homes Limited | Construction | 2018 |
| Hartley & Co Holdings Limited | Financial services | 2025 |
| Hartley's Joinery & Home Improvements Ltd | Construction | 2025 |
| Havelock Nest Limited | Real estate | 2021 |
| Hawkmoor Associates Limited | Professional & scientific | 2012 |
| Hazel Grove (Apartments) Management Company Ltd | Real estate | 2025 |
| Hazel Grove (Carcroft) Management Company Ltd | Real estate | 2025 |
| HC Sales Limited | Wholesale & retail | 2020 |
| Healds Hall Group Ltd | Financial services | 2024 |
| Healds Hall Limited | Hospitality | 2023 |
| Heather & Hare Properties Limited | Construction | 2025 |
| Heathermist Ltd | Professional & scientific | 1960 |
| Heating and Cooling Services (SH) Limited | Information & communication | 2022 |
| Heatsave Europe Limited | Manufacturing | 2014 |
| Heavenly Seven Ltd | Wholesale & retail | 2024 |
| Held (UK) Limited | Wholesale & retail | 2009 |
| Helen's Property Management Co Limited | Real estate | 2018 |
| Hepton (Thorp Arch) Management Company Limited | Households | 2005 |
| Herald Metal Products Limited | | 1979 |
| Herbie Hospital Limited | Wholesale & retail | 2016 |
| Herman Maher Limited | Wholesale & retail | 2020 |
| Hero Snacks Ltd | Manufacturing | 2024 |
| Heron Electrical Ltd | Construction | 2016 |
| Heron Renewables Limited | Construction | 2022 |
| Hetchell Paving Ltd | Construction | 2012 |
| Heum Dental Services Limited | Health & social care | 2022 |
| HF Gardening Services Ltd | Administrative & support | 2024 |
| HG Construct Limited | Construction | 2016 |
| HG Enterprises (Louth) Limited | Hospitality | 2021 |
| HGV Driver Network Ltd | Transport & logistics | 2021 |
| HH Clinical Consulting Limited | Health & social care | 2017 |
| Hibbak Properties Limited | Real estate | 2009 |
| High Hill Limited | Construction | 2002 |
| Highbank Stud LLP | | 2010 |
| Highcliffe Court Design Limited | Professional & scientific | 2001 |
| Highfield Lettings (Yorkshire) Limited | Real estate | 2022 |
| Highfieldvans Limited | Wholesale & retail | 2008 |
| Highmoor Farm Limited | Agriculture & fishing | 2025 |
| Highmoor Gardens (Northowram) Management Company Limited | Real estate | 2026 |
| Hildebrand Consulting Ltd | Professional & scientific | 2020 |
| Hillcoat Management Services Limited | Professional & scientific | 2002 |
| Hillside Construction & Properties Limited | Construction | 1995 |
| Hillside Court (Ilkley) Management Company Limited | Households | 1995 |
| Himss UK Ltd | Administrative & support | 2005 |
| Hitech Boston Limited | Wholesale & retail | 2022 |
| Hive Quality Engineering Limited | Information & communication | 2024 |
| HK Horses Agents Limited | Wholesale & retail | 2018 |
| HK Horses Limited | Arts & recreation | 2017 |
| Hkvam Ltd | Professional & scientific | 2020 |
| HLB (Signs) Limited | Professional & scientific | 2016 |
| Holberry Signs Limited | Financial services | 2018 |
| Holbrook Healthcare Limited | Health & social care | 2019 |
| Holgate Aesthetics Limited | Health & social care | 2023 |
| Holland & Burgon PUB Co Ltd | Hospitality | 2025 |
| Hollybrook Lodge Park Limited | Hospitality | 2025 |
| Holmleigh (Boroughbridge) Limited | Households | 2014 |
| Home Gym Solutions Limited | Administrative & support | 2013 |
| Home Wetherby Ltd | Wholesale & retail | 2024 |
| Homegrown Hospitality Ltd | Hospitality | 2015 |
| Homes of York Ltd | Real estate | 2020 |
| Hopkinson Dental Care Limited | Health & social care | 2011 |
| Hopscotch Shoes Limited | Wholesale & retail | 2014 |
| Horizon MED Tech Limited | Wholesale & retail | 2024 |
| Hospitable Recruitment Limited | Administrative & support | 2025 |