| Hill Building Services Ltd | Construction | 2020 |
| Hill Carpentry & Construction Ltd | Manufacturing | 2023 |
| Hill Coaching Company Ltd | Professional & scientific | 2016 |
| Hill Farm Barn Estates Limited | Real estate | 2025 |
| Hill Farm EPH Ltd | Agriculture & fishing | 2005 |
| Hill House Inns Limited | Manufacturing | 2014 |
| Hill Metal Roofing & Cladding Ltd | Construction | 2025 |
| Hill Murry Restaurant Limited | Hospitality | 2019 |
| Hill Property Developments (Norfolk) Ltd | Construction | 2023 |
| Hill Services (Consulting) Ltd | Professional & scientific | 2024 |
| Hill Services (Property) Ltd | Real estate | 2017 |
| Hillages Leisure Ltd | Arts & recreation | 2003 |
| Hillages Limited | Agriculture & fishing | 1996 |
| Hillbarn Limited | Health & social care | 2021 |
| Hillcrest Consulting Group Ltd | Professional & scientific | 2021 |
| Hillcrest Meadows Ltd | Health & social care | 2012 |
| Hillcrest-Access-Control Ltd | Administrative & support | 2019 |
| Hillier Aviation Limited | Transport & logistics | 2011 |
| Hilling-Martyn Management Company Limited | Households | 2019 |
| Hillmac Transport Ltd | Transport & logistics | 2021 |
| Hills CX Consultancy Ltd | Extraterritorial | 2025 |
| Hillside Animal Sanctuary Limited | Other services | 1995 |
| Hilltop Retreats Management Company Limited | Households | 2022 |
| Hillwood Precast Finishing Ltd | Construction | 2007 |
| Hilson Homes Ltd | Construction | 2022 |
| Hilton Court Management Co. Ltd | Households | 2012 |
| Hilton Road Management Limited | Professional & scientific | 2002 |
| Himalaya Financial Limited | Professional & scientific | 2017 |
| Hindes Yard RTM Limited | Households | 2025 |
| Hindle Electrical Services Limited | Construction | 2026 |
| Hindley Engineering 2014 Limited | Manufacturing | 2015 |
| Hine Contract Management Services Ltd | Construction | 2018 |
| Hines Court Management Company Limited | Households | 2000 |
| Hines Harvey Woods Limited | Professional & scientific | 2003 |
| Hingham Hideaways Ltd | Hospitality | 2025 |
| Hingham Kebab House Ltd | Hospitality | 2024 |
| Hinterland Press Limited | Information & communication | 2018 |
| Hinton Dear Limited | Manufacturing | 2011 |
| Hinton Marketing AI Ltd | Professional & scientific | 2024 |
| Hiom Games Ltd | Information & communication | 2025 |
| Hipperson Homes Ltd | Real estate | 2024 |
| Hipperson's BBQ Ltd | Hospitality | 2024 |
| Hippi Limited | Wholesale & retail | 2020 |
| Hipsync Records Limited | Information & communication | 2013 |
| Hiram Labs Ltd | Information & communication | 2020 |
| Hire Heights Limited | Administrative & support | 2025 |
| Hirejobsolution Ltd | Extraterritorial | 2018 |
| Hirevolution Ltd | Information & communication | 2024 |
| Hirundine Audio Limited | Information & communication | 2016 |
| HIS Healing Hands International Ministry Limited | Other services | 2025 |
| HIS Healing Hands Logistics & Cleaning Service Limited | Transport & logistics | 2025 |
| Histodiagnostics Limited | Health & social care | 2022 |
| Histognomatica Ltd | Health & social care | 2019 |
| Histon Road Development LLP | | 2018 |
| Histopathological Plus Limited | Health & social care | 2020 |
| Historic Building Solutions Ltd | Construction | 2023 |
| History of Advertising Trust(The) | Arts & recreation | 1978 |
| Hitomebore Limited | Professional & scientific | 2024 |
| Hive 360 Limited | Administrative & support | 2016 |
| Hive Fire Safety Ltd | Public administration | 2022 |
| Hiyahiya Europe Ltd | Wholesale & retail | 2016 |
| HJM Propco Limited | Real estate | 2024 |
| HK Countryside Management Limited | Professional & scientific | 2020 |
| HK Diagnostics Ltd | Health & social care | 2026 |
| HK Enterprise Ltd | Wholesale & retail | 2014 |
| HK Property Maintenance Limited | Construction | 2016 |
| Hkerstore Ltd | Information & communication | 2024 |
| HL Property Management Limited | Real estate | 2023 |
| HLB Tax Consulting Ltd | Professional & scientific | 2021 |
| HLC Contracting Limited | Administrative & support | 2019 |
| HLD Holdings Limited | Professional & scientific | 2007 |
| HLO Property Group Ltd | Real estate | 2021 |
| HLS Consulting Limited | Professional & scientific | 2010 |
| HLT Group Limited | Real estate | 2022 |
| Hltw Solutions Ltd | Wholesale & retail | 2015 |
| HM Care Consultancy Ltd | Professional & scientific | 2024 |
| HM Groundworks and Construction Ltd | Construction | 2020 |
| HM Haus Group Ltd | Information & communication | 2022 |
| HME Engineering Services Ltd | Professional & scientific | 2018 |
| HMM Driving Services Ltd | Transport & logistics | 2011 |
| HMM Trading Ltd | Manufacturing | 2016 |
| HMR PAY Limited | Transport & logistics | 2025 |
| HMS Hinchinbrook Ltd | Hospitality | 2014 |
| HMT (Norwich) Limited | Wholesale & retail | 2013 |
| HMW Exclusive Ltd | Other services | 2026 |
| HNS Consulting Ltd | Professional & scientific | 2019 |
| Hoardar Limited | Information & communication | 2018 |
| Hoarehouse Limited | Hospitality | 2015 |
| Hobbs of Cambridge Limited | Wholesale & retail | 1978 |
| Hobbybase Limited | Wholesale & retail | 2007 |
| Hoborough's Dyke Power Limited | Energy | 1999 |
| Hockey Company Ltd | Wholesale & retail | 2020 |
| Hodges & Spurgeon Limited | Real estate | 1947 |
| Hodgson Property Consultants Limited | Construction | 2012 |
| Hodson Norfolk Ltd | Hospitality | 2020 |
| Hodzhov Ltd | Transport & logistics | 2023 |
| Hogg Enterprises (East Anglia) Ltd | Hospitality | 2022 |
| Hoian Limited | Construction | 2019 |
| Hojo Floral Design Ltd | Wholesale & retail | 2016 |
| Hoko Europa Limited | Other services | 2022 |