| Heathmoor Textiles Limited | Wholesale & retail | 2006 |
| Heathmount Hall Right to Manage Company Limited | Households | 2019 |
| Heathpark London Ltd | Professional & scientific | 2013 |
| Hebble Homes Limited | Construction | 2021 |
| Hebers Mount Management Company Limited | Real estate | 1982 |
| Heberscliffe Management Company Limited | Households | 2005 |
| Hedgepig Studio Limited | Professional & scientific | 2025 |
| Hedspace Ltd | Information & communication | 2018 |
| Hefty Properties Ltd | Real estate | 2025 |
| Hehir&Sons Building Limited | Construction | 2018 |
| Helen Abbott Consulting Limited | Professional & scientific | 2022 |
| Helen MAY Estates Ltd | Real estate | 2024 |
| Helen Taylor - Plants and Planting Ltd | Wholesale & retail | 2016 |
| Helen Taylor Landscape & Garden Design Limited | Administrative & support | 2003 |
| Helliwell Advisory Ltd | Professional & scientific | 2025 |
| Helmstone AI Ltd | Construction | 2025 |
| Hemson Developments Limited | Construction | 2017 |
| Hencher Associates Limited | Professional & scientific | 2011 |
| Heritage Developments & Restoration Specialists Limited | Construction | 2024 |
| Heritage Masonry and Landscapes Ltd | Administrative & support | 2016 |
| HF Wealth Ltd | Financial services | 2018 |
| HF Wealth Partnership LLP | | 2023 |
| HGA Properties Limited | Real estate | 2020 |
| Hgal Holdings Limited | Extraterritorial | 2025 |
| Hi-Def Joinery & Build Ltd | Manufacturing | 2025 |
| Hickory House Childcare Limited | Health & social care | 2018 |
| Higgins Harvey Limited | Professional & scientific | 2008 |
| High Moor Grange Management Company Limited | Households | 2006 |
| High Park Estates Limited | Real estate | 2003 |
| High Royds Sasc CIC | Arts & recreation | 2023 |
| High Speed Training Holdings Limited | Financial services | 2021 |
| High Speed Training Limited | Administrative & support | 2007 |
| High Springs Management Company Limited | Households | 1982 |
| Highcrest Retail Brands Limited | Professional & scientific | 2009 |
| Hilldene Properties Limited | Financial services | 1965 |
| Hillview Company Services Limited | Real estate | 2003 |
| Hindle Properties Ltd | Real estate | 2017 |
| HJM Harmony Estates Limited | Real estate | 2025 |
| HLE Investments Ltd | Real estate | 2023 |
| Holdsworth HR Limited | Administrative & support | 2016 |
| Hollin Grange Management Company Limited | Households | 1999 |
| Hollin Lane Management Company Limited | Real estate | 2014 |
| Hollinfield Partners Limited | Professional & scientific | 2019 |
| Holo Lilo Limited | Manufacturing | 2010 |
| Holwell Properties Ltd | Real estate | 2023 |
| Home & Crafts Ltd | Wholesale & retail | 2020 |
| Home Dream Property Ltd | Real estate | 2024 |
| Home Farm (Menston) Management Limited | Households | 2004 |
| Home Joy Developments Limited | Real estate | 2020 |
| Homes for Holmes Ltd | Real estate | 2025 |
| Honeybrook Estates Limited | Real estate | 2015 |
| Hope Creative Development Ltd | Information & communication | 2023 |
| Horse Shoe Residentials Ltd | Real estate | 2025 |
| Horsley-Townsend Architects (Skipton) Limited | Professional & scientific | 2006 |
| Horsley-Townsend Architects Limited | Professional & scientific | 2001 |
| Houchen Homes Ltd | Construction | 2020 |
| House Investments (Bradford) Limited | Construction | 1954 |
| Housing Community People Limited | Education | 2022 |
| HOW to Break Into the Law Limited | Wholesale & retail | 2020 |
| Howard Nameco Ltd | Administrative & support | 2021 |
| Hoyle 1964 Limited | Extraterritorial | 2014 |
| HPA Print Limited | Professional & scientific | 2011 |
| Hrossey Investments Limited | Energy | 2013 |
| Hrss Pensions Limited | Financial services | 2019 |
| HRW Properties Ltd | Construction | 2022 |
| HSG Engineering & Maintenance Contractors Limited | Administrative & support | 2011 |
| HST Employee Ownership Trust Limited | Financial services | 2023 |
| HST Holdings Limited | Financial services | 2017 |
| Huddled Media Agency Limited | Administrative & support | 2017 |
| Hudson Dental Limited | Health & social care | 2013 |
| Hudson Foster Insurance & Risk Management Ltd. | Financial services | 2011 |
| Hudson Foster LLP | | 2009 |
| Hudson Foster Management Services Limited | Professional & scientific | 2023 |
| Human Resources Partnership Limited | Administrative & support | 2023 |
| Hush York Limited | Real estate | 2026 |
| Huso Ltd | Professional & scientific | 2012 |
| Hutchinson Whitlam Associates Limited | Professional & scientific | 2012 |
| HV Property Investment Ltd | Real estate | 2026 |
| HVM Consulting Ltd | Professional & scientific | 2025 |
| HWH Ilkley Limited | Construction | 2024 |
| I-Rezidential Ltd | Real estate | 2021 |
| Iain Cumberland Ltd | Professional & scientific | 2017 |
| IAN Brothers Limited | Professional & scientific | 2014 |
| IAN Brothers Real Estate Ltd | Real estate | 2020 |
| IBG Limited | Information & communication | 2025 |
| IBQ Ltd | Information & communication | 2012 |
| Ibuilding Products Ltd | Wholesale & retail | 2014 |
| Icoupon Global Limited | Information & communication | 2015 |
| Ideal Dust Extraction Systems Limited | Manufacturing | 2020 |
| Ideal Extraction Ltd | Manufacturing | 2020 |
| IF Business Solutions Limited | Professional & scientific | 2014 |
| IF NOT NOW When Limited | Real estate | 2010 |
| IG Medical Innovations Limited | Health & social care | 2018 |
| Ignition Key Ltd | Professional & scientific | 2009 |
| Ihatchscience Medical Communications Ltd | Information & communication | 2016 |
| IJC Financial Management Ltd | Financial services | 2017 |
| Ijcm Property Ltd | Real estate | 2025 |
| Ilkla Property Ltd | Real estate | 2024 |
| Ilkley & District Good Neighbours Community Transport | Transport & logistics | 2004 |
| Ilkley & District Motor Club Limited | Arts & recreation | 1975 |