| H Brayshaw Abrasive Consultants Limited | Professional & scientific | 2014 |
| Hall Garth Properties Limited | Agriculture & fishing | 2014 |
| Hamilton & Morrice Limited | Real estate | 2017 |
| Hand and Wrist Doctor Ltd | Health & social care | 2024 |
| Hand Drawn Pixels Ltd | Professional & scientific | 2023 |
| Hargreaves & Auty Ltd | Manufacturing | 2014 |
| Harmony Estates Ltd. | Real estate | 1996 |
| Harmony International Trading Ltd | Wholesale & retail | 2018 |
| Harp Environment Limited | Professional & scientific | 2008 |
| Harp Surveying Services Limited | Information & communication | 2007 |
| Harper Financial Services Ltd | Financial services | 2021 |
| Harriets Fashion House Limited | Wholesale & retail | 2017 |
| Hatley Marshall Holdings Limited | Real estate | 2025 |
| Haut Limited | Health & social care | 2017 |
| Hawthorn Enterprises Limited | Wholesale & retail | 2019 |
| Haycock and JAY Associates Ltd | Professional & scientific | 2010 |
| Hayton Holdings Ltd | Financial services | 2026 |
| Hazel Ogden Estates Limited | Administrative & support | 2008 |
| HC Sports Analytics Ltd | Arts & recreation | 2024 |
| HD Cleaning Services Limited | Administrative & support | 2017 |
| Heal the Earth Limited | Health & social care | 2013 |
| Healthcare Partnerships Ltd | Administrative & support | 2024 |
| Heather & Moss Ltd | Wholesale & retail | 2022 |
| Heights Antiques Ltd | Wholesale & retail | 2024 |
| Heliserve Limited | Manufacturing | 2015 |
| Hello Jolly Limited | Information & communication | 2011 |
| Heptonstall S1 Limited | Agriculture & fishing | 2023 |
| HER Sweatshirts Ltd | Wholesale & retail | 2026 |
| Heritage Doors Ltd | Construction | 2019 |
| HG1 Jewellers Ltd | Manufacturing | 2025 |
| Higher Ground Films Ltd | Information & communication | 2026 |
| Highlight Type Bureau Limited | Manufacturing | 1989 |
| Hillas Group Limited | Financial services | 2016 |
| Hive Premier Bathrooms Ltd | Construction | 2025 |
| Hive Premier Kitchens Ltd | Construction | 2026 |
| Hivepg Ltd | Households | 2023 |
| Hollings Crowe Storr LLP | | 2016 |
| Hollow Hearts Tattoo Collective Ltd | Other services | 2022 |
| Holly Court Management Company (Ilkley) Limited | Households | 1979 |
| Honey Tights Limited | Wholesale & retail | 2008 |
| Hopeshare Limited | Real estate | 2001 |
| Horsford Masonic Hall Company Limited | Professional & scientific | 1966 |
| Horsforth Stationery Ltd | Wholesale & retail | 2018 |
| Houldsworth Group Limited | Extraterritorial | 2021 |
| House of Beauty Otley Ltd | Other services | 2026 |
| House of Pottery Limited | Arts & recreation | 2025 |
| HTM Associates Limited | Professional & scientific | 2010 |
| Huhi Limited | Construction | 2020 |
| Huntadeal Ltd | Information & communication | 2006 |
| Hydra Marketing Limited | Professional & scientific | 2011 |
| IAB Developments Ltd | Real estate | 2020 |
| Iatp Limited | Professional & scientific | 2010 |
| Ijoa Limited | Arts & recreation | 2024 |
| Ilkley Chamber Orchestra Limited | Arts & recreation | 2022 |
| Ilkley Road Developments Ltd | Construction | 2026 |
| Imagefirst Events Limited | Arts & recreation | 2021 |
| Impero Pizza Otley Ltd | Hospitality | 2026 |
| Impruv Project Services Limited | Professional & scientific | 2014 |
| Industrial Action Limited | Professional & scientific | 1996 |
| Inestimable Limited | Hospitality | 2025 |
| Ingham Property Investments Limited | Financial services | 2025 |
| Inglewood Town Planning Limited | Professional & scientific | 2020 |
| Innovatio AUT Mors Ltd | Professional & scientific | 2025 |
| Inspiration Tree Properties Ltd | Education | 2012 |
| Integral Talent International Limited | Financial services | 2016 |
| Integral Talent Limited | Real estate | 2012 |
| Intellisys Limited | Information & communication | 1995 |
| International Strategy Solutions Limited | Professional & scientific | 1999 |
| International Talent Partnerships Ltd | Administrative & support | 2021 |
| Irish Charm Properties Limited | Real estate | 2024 |
| Iron Ice Ltd | Other services | 2026 |
| Ironhorse Bike Haulage Limited | Transport & logistics | 2016 |
| Isavan Limited | Financial services | 2006 |
| IVY House Otley Limited | Other services | 2017 |
| Izelias Chocolate Limited | Manufacturing | 2023 |
| J & S Property (Yorkshire) Limited | Real estate | 2015 |
| J Bonner Building & Walling Contractor Limited | Construction | 2006 |
| J Moon I R Limited | Arts & recreation | 2013 |
| J Waite Wardrobes Ltd | Construction | 2020 |
| J&Lward Ltd | Hospitality | 2017 |
| J. Peacock I.R. Limited | Arts & recreation | 2008 |
| Jack Dammes Limited | Hospitality | 2002 |
| James Phillip Projects Limited | Construction | 2009 |
| Jamesson Properties Limited | Real estate | 2021 |
| Janet Francis Property Professional Limited | Real estate | 2017 |
| Jannso Limited | Health & social care | 2021 |
| Jbnc Limited | Administrative & support | 2025 |
| Jbrose Limited | Hospitality | 2025 |
| JC Leasehold Management Ltd | Households | 2016 |
| JCH Ortho Limited | Health & social care | 2013 |
| JDS Plumbing & Heating Ltd | Construction | 2023 |
| Jennie Stoddart-Scott PR Limited | Professional & scientific | 2021 |
| Jetsether Limited | Administrative & support | 2025 |
| Jewel of Mumbai Cuisine Ltd | Hospitality | 2026 |
| Jewel of Mumbai Otley Ltd | Hospitality | 2024 |
| JFS Strategic Consulting Ltd | Professional & scientific | 2024 |
| Jjak Property Limited | Real estate | 2013 |
| Jjak Property Management LLP | | 2024 |
| JMT Finance Limited | Financial services | 2019 |
| JNC Properties LLP | | 2019 |