| Hearing in Vision Ltd. | Wholesale & retail | 2012 |
| Hearsense Limited | Wholesale & retail | 2011 |
| Heartagram Events Ltd. | Hospitality | 2025 |
| Hearts and Voices Ltd | Wholesale & retail | 2025 |
| Heath Optometric Limited | Health & social care | 2018 |
| Heatmine Ltd | Construction | 2026 |
| Heaton Estates Limited | Real estate | 2003 |
| Heaven Sent Salon Ltd | Wholesale & retail | 2018 |
| Hellenic Group Ltd | Wholesale & retail | 2020 |
| Hempel Decorative Paints Limited | Professional & scientific | 2011 |
| Heng Yang Hong Limited | Wholesale & retail | 2025 |
| Hennihouse Ltd | Real estate | 2025 |
| Henry Christopher Commercial Printers Limited | Manufacturing | 2010 |
| Henry Smith and Hamylton (Opticians) Limited | Health & social care | 1934 |
| Henrysl Limited | Hospitality | 2026 |
| Heritage Mews (Chester) Ltd | Households | 2018 |
| Heskin Hospitality Limited | Hospitality | 2021 |
| HG Kithub Ltd | Wholesale & retail | 2017 |
| HG Lens Lounge Ltd | Wholesale & retail | 2019 |
| HHR Locum Ltd | Professional & scientific | 2022 |
| Hi-Tec Roofing Solutions Ltd | Construction | 2025 |
| HIA UK Consultancy Ltd | Professional & scientific | 2024 |
| High Level Maintenance (Lancashire) Limited | Construction | 1989 |
| Highways Saviour Chris Ltd | Transport & logistics | 2023 |
| Hindle Jepson & Jennings Ltd | Professional & scientific | 2010 |
| Hisoms Metals Limited | Other services | 1964 |
| Hisoms Sheet Metals Limited | Other services | 1983 |
| Hitchen Legal Limited | Administrative & support | 2013 |
| Hitchin VC Limited | Wholesale & retail | 2020 |
| Hj&J Holdings Limited | Financial services | 2025 |
| HJK Capital (Northern) Limited | Real estate | 2014 |
| HJK Construction (Northern) Limited | Construction | 2015 |
| HJK Contracts Limited | Construction | 2025 |
| HJK Properties (Northern) Ltd | Real estate | 2020 |
| HJR Asset Management Ltd | Manufacturing | 2020 |
| HKCOURIER2002 Ltd | Transport & logistics | 2026 |
| HMC Constructions Ltd | Construction | 2022 |
| Hmsw Investments Limited | Financial services | 2025 |
| HO2 Investments Limited | Professional & scientific | 2022 |
| HO2 Management Limited | Professional & scientific | 2005 |
| Holden (Lancashire) Limited | Professional & scientific | 2013 |
| Holden Decor Limited | Manufacturing | 1991 |
| Holistic Hound and Other Animals Limited | Other services | 2017 |
| Holker Store Ltd | Wholesale & retail | 2017 |
| Holland Opticians Limited | Health & social care | 1983 |
| Hologon-Apps Ltd | Information & communication | 2026 |
| Holywell Manor Management Company Limited | Other services | 2022 |
| Home Heaven Textiles Limited | Wholesale & retail | 2025 |
| Homeloop Technologies Limited | Real estate | 2023 |
| Homestyle Roofing & Plastics Ltd | Construction | 2023 |
| Hondamxrestored Ltd | Wholesale & retail | 2025 |
| Honeybee Hub Limited | Real estate | 2013 |
| Hope Moon Ltd | Real estate | 2011 |
| Hope Planet Ltd | Real estate | 2011 |
| Hope SON Ltd | Wholesale & retail | 2011 |
| Hope Star Ltd | Real estate | 2011 |
| Horizon Flooring Systems Limited | Extraterritorial | 2002 |
| Horizon Foam Holdings Limited | Manufacturing | 1987 |
| Horizon Foam Limited | Extraterritorial | 2002 |
| Horizon Imports Limited | Administrative & support | 2006 |
| Hough Park Limited | Professional & scientific | 2014 |
| House of Crowns Limited | Real estate | 1987 |
| House of Sarah Limited | Extraterritorial | 2013 |
| HP GEN Ltd | Wholesale & retail | 2025 |
| Hrisassociates Ltd | Information & communication | 2019 |
| HSH Optical (Oadby) Limited | Wholesale & retail | 2026 |
| HSH Optical (Peterborough) Limited | Wholesale & retail | 2026 |
| HSH Optical (Syston and LFE) Limited | Wholesale & retail | 2026 |
| HSR Motors Ltd | Wholesale & retail | 2025 |
| HTA Group Limited | Manufacturing | 1989 |
| HU Associates Limited | Information & communication | 2013 |
| HU Design Limited | Arts & recreation | 2013 |
| HU Media Limited | Information & communication | 2013 |
| HU Solutions Limited | Information & communication | 2013 |
| Hub Darwen Limited | Hospitality | 2024 |
| HUNT4HOUSES Limited | Real estate | 1997 |
| Huntlea Properties Ltd | Professional & scientific | 2005 |
| Husco Limited | Wholesale & retail | 2023 |
| HUSSAIN01 Ltd | Wholesale & retail | 2026 |
| HV Sub-Station Fitter Services Ltd | Administrative & support | 2017 |
| Hy-Tech Ltd | Information & communication | 2017 |
| I & S Havard Plant Ltd | Transport & logistics | 2016 |
| I Teddy.Co.Uk Ltd | Wholesale & retail | 2006 |
| I.W.D. Investments Limited | Financial services | 2020 |
| IAN Duckworth Drylining Services Limited | Construction | 2008 |
| IAN Mason Limited | Construction | 1980 |
| IAN Simm Limited | Construction | 2003 |
| IAN Underwood Ltd | Health & social care | 2006 |
| IBR Homes Ltd | Real estate | 2023 |
| IC Engine Exports Ltd | Wholesale & retail | 2026 |
| Ice Cube Technologies Limited | Information & communication | 2013 |
| ICL Contractors Limited | Administrative & support | 2015 |
| Icon Heritage Ltd | Real estate | 2021 |
| IM Properties NW Ltd | Real estate | 2024 |
| Imagehug Ltd | Extraterritorial | 2015 |
| Immaculate Dog Grooming Ltd | Administrative & support | 2018 |
| Impress Commercial Ltd | Other services | 2021 |
| Impress DRY Cleaners and Laundry Ltd | Other services | 2019 |
| Impress Laundry & DRY Cleaners Ltd | Other services | 2021 |
| IN IT 2 WIN IT Competitions Ltd | Other services | 2024 |