| HC 2019 Limited | Extraterritorial | 2019 |
| HC Groundcare Ltd | Administrative & support | 2023 |
| HC Leone Limited | Wholesale & retail | 2017 |
| HC Studio Ltd | Other services | 2026 |
| HCA Kang Trading Ltd | Wholesale & retail | 2026 |
| Hcci Credit Services Limited | Information & communication | 1989 |
| HCL Cleaning Services Limited | Administrative & support | 2025 |
| HCL Developments Limited | Construction | 2017 |
| Hcle Civils Ltd | Professional & scientific | 2014 |
| Hcoaching Limited | Professional & scientific | 2022 |
| HD & NH Lettings LLP | | 2016 |
| HD Bbone Limited | Wholesale & retail | 2017 |
| HD Bristol Ltd | Wholesale & retail | 2025 |
| HD Building Concepts Ltd | Construction | 2025 |
| HD Cloud Limited | Hospitality | 2024 |
| HD Coliseum Limited | Wholesale & retail | 2017 |
| HD Creative Services Ltd | Manufacturing | 2019 |
| HD Ellessone Limited | Hospitality | 2017 |
| HD FAM Ltd | Financial services | 2021 |
| HD Leicester Ltd | Wholesale & retail | 2024 |
| HD Nottingham Ltd | Wholesale & retail | 2025 |
| HD Property Developments Limited | Real estate | 2001 |
| HD Shopfitting Ltd | Wholesale & retail | 2023 |
| HD Trafford Limited | Wholesale & retail | 2018 |
| HD Wembley Limited | Wholesale & retail | 2020 |
| HDA Medical Ltd | Health & social care | 2014 |
| Hdenew Limited | Health & social care | 2015 |
| HDL World Food Ltd | Wholesale & retail | 2025 |
| HDP Global Holdings Limited | Financial services | 2022 |
| HDT Property Investment Limited | Real estate | 2024 |
| HE Leicester Ltd | Manufacturing | 2025 |
| Head Over Heels Academy Ltd | Arts & recreation | 2025 |
| Head Start IP Ltd | Professional & scientific | 2025 |
| Headhunter Associates Ltd | Professional & scientific | 2016 |
| Headland DB Limited | Financial services | 2024 |
| Headley Financial Services Limited | Financial services | 1974 |
| Headroom Properties Ltd | Real estate | 2023 |
| Heads UP Leicester Limited | Health & social care | 2008 |
| Healand Limited | Health & social care | 2022 |
| Healing Treatments Ltd | Health & social care | 2022 |
| Healproserpina Ltd | Arts & recreation | 2023 |
| Health and Convenience Limited | Hospitality | 2024 |
| Health and Food Safety Limited | Professional & scientific | 2011 |
| Health and Supplements Ltd | Health & social care | 2026 |
| Health Burst Ltd | Wholesale & retail | 2025 |
| Health Connections Consultancy Ltd | Health & social care | 2023 |
| Health Focus CBD Limited | Wholesale & retail | 2019 |
| Health Governance Limited | Administrative & support | 2003 |
| Health in Mind Psychology Ltd | Health & social care | 2023 |
| Health Link Care Services Ltd | Health & social care | 2015 |
| Health Link Services (UK). | Professional & scientific | 2011 |
| Health ME Ltd | Health & social care | 2025 |
| Health on Hand Limited | Health & social care | 2003 |
| Health Operations Limited | Health & social care | 2024 |
| Health Portal Ltd | Wholesale & retail | 2025 |
| Health Positive Limited | Health & social care | 2013 |
| Health Serve Pharmacy Limited | Health & social care | 2000 |
| Health-Intel Ltd | Health & social care | 2024 |
| HEALTH4HER Community Interest Company | Health & social care | 2024 |
| Healthcare Creators Collective Ltd | Professional & scientific | 2025 |
| Healthcare Infection Prevention Limited | Health & social care | 2013 |
| Healthcare Pharmacy Limited | Wholesale & retail | 2005 |
| Healthcare Supplies Limited | Health & social care | 2014 |
| Healthcare Vision 360 Consulting Ltd | Information & communication | 2017 |
| Healthcareanalysis Limited | Information & communication | 2025 |
| Healthmax Clinic Ltd | Health & social care | 2023 |
| Healthpharm Group Ltd | Wholesale & retail | 2003 |
| Healthways (Leicester) Limited | Health & social care | 2012 |
| Healthwise Medics Ltd | Health & social care | 2023 |
| Healthy Choice Ltd | Hospitality | 2017 |
| Healthy Foods Limited | Wholesale & retail | 2007 |
| Healthy Minds for Muslims Ltd | Health & social care | 2021 |
| Healthy Paws Limited | Extraterritorial | 2012 |
| Healthy Time Ltd | Wholesale & retail | 2023 |
| Healthyaa Ltd | Health & social care | 2021 |
| HEALTHYFOODUK247 Ltd | Manufacturing | 2023 |
| Healy Bearings International Limited | Manufacturing | 1979 |
| Heanor Specialist Installations Limited | Construction | 2023 |
| Hear Assist Limited | Health & social care | 2021 |
| Hear Clear Ltd | Wholesale & retail | 2014 |
| Hear Right Ltd | Health & social care | 2022 |
| Hear With ISH Ltd | Wholesale & retail | 2025 |
| Heard Farms Limited | Real estate | 2012 |
| Hearkes Ltd | Financial services | 2025 |
| Heart Guided Home Care Ltd | Extraterritorial | 2023 |
| Heart Motor Group Ltd | Wholesale & retail | 2024 |
| Heart of England Master Thatchers Ltd | Construction | 2013 |
| Heart of Hearts Ltd | Wholesale & retail | 2023 |
| Heart of YEW CIC | Other services | 2024 |
| Heart Rhythm Healthcare Ltd | Health & social care | 2024 |
| Hearth Help Ltd | Health & social care | 2025 |
| Hearts and Stars Clothing Ltd | Wholesale & retail | 2021 |
| Hearts That Speak Limited | Manufacturing | 2025 |
| Heartwize | Education | 2018 |
| Heartwood Carpentry & Joinery Limited | Administrative & support | 2016 |
| Heartwood Gaming Ltd. | Manufacturing | 2025 |
| Heat Assist UK Ltd | Professional & scientific | 2020 |
| Heat Exchange Group Services Limited | Professional & scientific | 2018 |
| Heat Innovations Limited | Construction | 2020 |
| Heat Professional Heating Services Limited | Construction | 2011 |