| Hollywood Flooring Ltd | Wholesale & retail | 2024 |
| Homebuilder (Scarborough) Ltd | Construction | 2012 |
| Homemore Boost Ltd | Extraterritorial | 2020 |
| Homemore Care Ltd | Extraterritorial | 2021 |
| Homemore Ltd | Hospitality | 2019 |
| Homemore Stay Ltd | Real estate | 2021 |
| Hopping Hares Property Ltd | Real estate | 2019 |
| Horizon (Bay) Limited | Hospitality | 2014 |
| Hormoneequilibrium Limited | Health & social care | 2023 |
| Horsfall Financial Services Limited | Financial services | 2015 |
| Host and Beyond Ltd | Real estate | 2026 |
| Hot & Fresh Limited | Hospitality | 2025 |
| Hotel Inspirations Limited | Hospitality | 2021 |
| House of Chique Limited | Wholesale & retail | 2025 |
| House of Sturt Limited | Information & communication | 1997 |
| Houses to Homes (North Yorkshire) Limited | Real estate | 2022 |
| Hovingham Stores Limited | Wholesale & retail | 2013 |
| Howard Yorkshire Limited | Hospitality | 2014 |
| Howards Court (Whitby) Management Co. Ltd. | Households | 1995 |
| HPS Consult Ltd | Construction | 2022 |
| HT92 Ltd | Financial services | 2024 |
| Htww Properties Limited | Real estate | 2018 |
| Hubbard Athletic Ltd | Other services | 2024 |
| Hubris Clothing Limited | Wholesale & retail | 2025 |
| Hudson Wight Performance Sailwear Limited | Extraterritorial | 2013 |
| Hunmanby Hall (North) Limited | Households | 1998 |
| Hunmanby Holdings Limited | Wholesale & retail | 2017 |
| Hunter Brown Holdings Ltd | Real estate | 2020 |
| Hunter Brown Property Limited | Real estate | 2021 |
| Huntriss ROW Stores Ltd | Wholesale & retail | 2025 |
| Hunts UK Leisure Ltd | Professional & scientific | 2016 |
| Huru Tandoori Limited | Hospitality | 2025 |
| Hydrahose Limited | Manufacturing | 2012 |
| Hygge Investments Limited | Real estate | 2021 |
| I DO Dents Ltd | Other services | 2016 |
| I K Welding Ltd | Construction | 2017 |
| I-330 Limited | Information & communication | 1995 |
| I.T. Spark Limited | Financial services | 2018 |
| I24 Investments Limited | Financial services | 2024 |
| Iain Harrison Limited | Construction | 2002 |
| IAN Bell Contracting Ltd | Other services | 2016 |
| Ibsca Limited | Education | 2006 |
| Iburndaleproperties Limited | Hospitality | 2023 |
| Ice Van Ltd | Hospitality | 2017 |
| Idealogix Limited | Professional & scientific | 2021 |
| Identity Yorkshire Limited | Extraterritorial | 2003 |
| Ideosound Ltd | Information & communication | 2017 |
| Ignite Plumbing and Heating Specialists (North Yorkshire) Limited | Construction | 2021 |
| IHC Integrated Health Commissioning Ltd | Professional & scientific | 2025 |
| IL Piatto Scarborough Limited | Hospitality | 2020 |
| Ilhars Foods Ltd | Hospitality | 2025 |
| Illayda Meal Ltd | Hospitality | 2024 |
| Illuminesta Ltd | Professional & scientific | 2013 |
| Ilona Franklin Jewellery Limited | Manufacturing | 2024 |
| Imagination Deployed Ltd | Information & communication | 2026 |
| Imagination Station Scarborough Ltd | Hospitality | 2025 |
| Imeng Limited | Professional & scientific | 2016 |
| Impactful Marketing Ltd | Professional & scientific | 2023 |
| Impetus Building Contractors (Whitby) Limited | Construction | 2014 |
| Imzee Food Ltd | Hospitality | 2024 |
| IN Command Limited | Extraterritorial | 2012 |
| Inc Hospitality Ltd | Hospitality | 2026 |
| Incognis Ltd | Professional & scientific | 2022 |
| Incom Corporation Limited | Professional & scientific | 2018 |
| Independent Schools Specialists Ltd | Education | 2022 |
| Indi Clothing Company Ltd | Wholesale & retail | 2015 |
| Indian Taj(Scarborough) Limited | Hospitality | 2024 |
| Indie Apparel Limited | Wholesale & retail | 2004 |
| Indie Icon Limited | Extraterritorial | 2009 |
| Indie Revival CIC | Administrative & support | 2026 |
| Industrial Automaton Ltd | Real estate | 2023 |
| Infinite (Property UK) Ltd | Hospitality | 2019 |
| Infinite Artists LLP | | 2010 |
| Infinite Limited | Transport & logistics | 2008 |
| Infinite Training Limited | Extraterritorial | 2019 |
| Infinite UK Group Holdings Ltd | Financial services | 2019 |
| Infiniti Scaffolding Limited | Manufacturing | 2015 |
| INFINITUM24 Limited | Financial services | 2024 |
| Infinity Business Coaching Ltd | Other services | 2022 |
| Ingenium Integration Limited | Professional & scientific | 2012 |
| Ingram Management Company Limited | Households | 2026 |
| Inherisure Ltd | Professional & scientific | 2024 |
| Inkahoots! CIC | Education | 2023 |
| Inner Light Foundation Limited | Health & social care | 2005 |
| Inspirational Renovations Ltd | Construction | 2026 |
| Inspire Crypto Limited | Public administration | 2022 |
| Inspire Legal Academy Limited | Education | 2022 |
| Inspire Legal Group Ltd | Professional & scientific | 2020 |
| INT 1 Limited | Construction | 2025 |
| Integra Electrical Contractors Limited | Construction | 2009 |
| Integra Group Holding Company Ltd | Financial services | 2015 |
| Integra Holdings Limited | Real estate | 2003 |
| Integra MEP Limited | Construction | 2022 |
| Integra QME 1 Limited | Energy | 2017 |
| Integrity Coaching Executives Limited | Professional & scientific | 2025 |
| Integrity M&E Ltd | Other services | 2024 |
| Intelect Group UK Ltd | Professional & scientific | 2023 |
| Intellipharrm Limited | Information & communication | 2026 |
| Interact (Business Services) Limited | Arts & recreation | 2016 |
| Interceptor Security Systems Limited | Construction | 2013 |