| Heronoak Services Ltd | Construction | 2024 |
| Hesketh Owners Club Ltd | Other services | 2025 |
| Hesm Limited | Real estate | 2019 |
| Hexham Interims Limited | Professional & scientific | 2023 |
| Hgbk Ltd | Professional & scientific | 2020 |
| HGH Homes Limited | Construction | 2025 |
| HGL (Midlands) Ltd | Construction | 2024 |
| HHI Limited | Construction | 2024 |
| Hi-Spec Interiors Ltd | Construction | 2024 |
| Hi-Tech Machining Limited | Manufacturing | 1999 |
| Hibras Limited | Wholesale & retail | 2025 |
| Hickman GW Ltd | Construction | 2020 |
| Hickman Hughes Ltd | Information & communication | 2019 |
| Hidong Estate PLC | Manufacturing | 1923 |
| Highley Bungalow Company Limited | Households | 1983 |
| Hightastic Ltd | Construction | 2023 |
| Hill View Farm Products Limited | Administrative & support | 2007 |
| Hillcrest (Balham 1) Limited | Real estate | 2020 |
| Hillcrest Building by Design Ltd | Construction | 2023 |
| Hillcrest Childrens Services (2) Limited | Education | 2009 |
| Hillcrest Childrens Services Limited | Health & social care | 2002 |
| Hillcrest Real Estate Consulting Limited | Professional & scientific | 2014 |
| Hilltop Engineering and Tool Ltd | Manufacturing | 2022 |
| Himley Green Limited | Wholesale & retail | 2021 |
| Hira Khan Ltd | Wholesale & retail | 2024 |
| Hive Consortium Ltd | Financial services | 2024 |
| HK Digital Ltd | Information & communication | 2025 |
| HK Doal Limited | Real estate | 2022 |
| HKE Services Ltd | Manufacturing | 2022 |
| HLB Management Ltd | Households | 2022 |
| HLP Engineering Solutions Limited | Manufacturing | 2007 |
| HLP Enterprises Limited | Manufacturing | 2009 |
| Hlwbeauty Ltd | Other services | 2019 |
| Hobbies Limited | Wholesale & retail | 2003 |
| Hodgetts Properties Limited | Real estate | 2003 |
| Hogan Landscapes Ltd | Administrative & support | 2018 |
| Hollel Productions Limited | Arts & recreation | 2024 |
| Holly's Children Leisure Ltd | Administrative & support | 2023 |
| Holmes Corporate Relocation Ltd | Hospitality | 2024 |
| Holy Trinity Corporation Limited | Professional & scientific | 2025 |
| Home Art Limited | Real estate | 2013 |
| Home Forestry LLP | | 2009 |
| Homebargaindeals Ltd | Wholesale & retail | 2025 |
| Homebuyers Mortgages Limited | Financial services | 2005 |
| Homer Salaries Limited | Professional & scientific | 1984 |
| Homestyle Care Ltd | Health & social care | 2009 |
| Hometrades Ltd | Manufacturing | 2014 |
| HON Property Management Ltd | Real estate | 2025 |
| Hope Nest Mother&Baby Care &Support Ltd | Health & social care | 2026 |
| HOPE4HAPPINESS Limited | Health & social care | 2012 |
| Horton Computer Services Ltd | Information & communication | 2021 |
| Hot Wheelz Car Wash Ltd | Wholesale & retail | 2023 |
| Hourhope Limited | Construction | 1988 |
| House 2 Home Installations Ltd | Construction | 2024 |
| House of Cyclax Limited | Information & communication | 2010 |
| House of Peri Peri Ltd | Hospitality | 2016 |
| Houses by Hampton Limited | Real estate | 2023 |
| Howell Consultancy Limited | Professional & scientific | 2009 |
| Howell Wright LLP | | 2005 |
| Howley Grange Healthcare Ltd | Wholesale & retail | 2025 |
| HPH Contractors Ltd | Construction | 2024 |
| HS Property Specialists Limited | Real estate | 2025 |
| Hsda Ltd | Health & social care | 2019 |
| HSL DSL Residential Group Ltd | Real estate | 2024 |
| HSP Nicklin Limited | Professional & scientific | 2001 |
| Htft Partnership Limited | Education | 2014 |
| HTM Assets Limited | Professional & scientific | 2021 |
| HUE Design Services Limited | Professional & scientific | 2021 |
| Hunnington Meadows Ltd | Households | 2025 |
| Hunnington Properties Limited | Construction | 2013 |
| Hunter Capital Management Limited | Real estate | 2017 |
| Huntlands Road RTM Company Limited | Households | 2017 |
| Husseintransport Ltd | Transport & logistics | 2026 |
| Hydar's Logistics Ltd | Transport & logistics | 2021 |
| Hygrade International Limited | Wholesale & retail | 2020 |
| Hygrange Ltd | Wholesale & retail | 2016 |
| Hygrove Partners Limited | Administrative & support | 2026 |
| Hylton Hound Hotel Limited | Other services | 2019 |
| Hyper Bargains Limited | Wholesale & retail | 2018 |
| I Hub Telecom Ltd | Wholesale & retail | 2023 |
| IAK Euro Freight Ltd | Transport & logistics | 2022 |
| Ibex Industrial Brushes Limited | Extraterritorial | 2013 |
| Ibex-Ebi Limited | Extraterritorial | 2016 |
| Icci Holdings Limited | Financial services | 2026 |
| Ideal Steel Limited | Professional & scientific | 2006 |
| Igloo Developments & Conversions Limited | Construction | 2021 |
| IIG Holdings Limited | Financial services | 2022 |
| IKA Ventures Limited | Wholesale & retail | 2024 |
| Ikbal Properties Ltd | Real estate | 2025 |
| ILLUMEN8 Limited | Construction | 2009 |
| Illyria Theatre Limited | Arts & recreation | 2019 |
| IMB Architects Limited | Professional & scientific | 2009 |
| Imjustunited Ltd | Information & communication | 2023 |
| Impact - Inspire C.I.C. | Professional & scientific | 2025 |
| Impact A&C West Midlands Ltd | Education | 2024 |
| Impact-Inspire Training Ltd | Professional & scientific | 2025 |
| Impartial Mortgage Advice Limited | Financial services | 2015 |
| Imperial Hydraulics Ltd | Wholesale & retail | 2025 |
| Impressions Windows Limited | Construction | 2018 |
| Imvs Limited | Information & communication | 2000 |