| Hhouse 888 Ltd | Hospitality | 2020 |
| Hhpl Ltd | Construction | 2024 |
| HHS Direct Ltd | Wholesale & retail | 2023 |
| HHS Finance Ltd | Financial services | 2018 |
| HHW (Leic) Limited | Construction | 2024 |
| HI Brows Ltd | Other services | 2020 |
| HI Focus Properties Limited | Other services | 2020 |
| HI Tea Parlours Limited | Hospitality | 2019 |
| Hi-Castle Recruitment Ltd | Administrative & support | 2016 |
| Hi-Chrome (Services) Holdings Limited | Administrative & support | 2019 |
| Hi-Chrome (Services) Limited | Manufacturing | 2012 |
| Hi-Class Glass Ltd | Construction | 2024 |
| Hi-Gate Trading Ltd | Manufacturing | 2014 |
| Hi-Kal Briquettes Limited | Wholesale & retail | 2024 |
| Hi-Octane Evolutions Limited | Health & social care | 2024 |
| Hi-Protect Limited | Manufacturing | 2007 |
| Hi-Tec Yarns Limited | Manufacturing | 1982 |
| Hiai Ltd | Administrative & support | 2025 |
| Hiatt Financial Ltd | Financial services | 2010 |
| Hibernia Care Limited | Health & social care | 2022 |
| Hiberton Prop Ltd | Real estate | 2017 |
| Hibiscus Adhd Services Ltd | Health & social care | 2018 |
| Hibiscus Health Ltd | Information & communication | 2013 |
| Hicare Group (Properties) Ltd | Real estate | 2002 |
| Hickman & Smith Architects Ltd | Professional & scientific | 2012 |
| Hickman Signs Limited | Professional & scientific | 2007 |
| Hicorp 78 Limited | Real estate | 2010 |
| Hidcote Homes Ltd | Construction | 2014 |
| Hidden Muses Group Ltd | Professional & scientific | 2025 |
| Hide Group Ltd | Education | 2024 |
| Hidinho Ltd | Construction | 2025 |
| Hidiq & Sons Ltd | Transport & logistics | 2026 |
| Hiffuz Associates Ltd | Real estate | 2024 |
| Hifzun Chowdhury Ltd | Wholesale & retail | 2023 |
| HIG Investments Ltd | Wholesale & retail | 2024 |
| Higashi Trading Ltd | Wholesale & retail | 2024 |
| Higgins Embroidery & Print Ltd | Manufacturing | 2025 |
| Higgins Heartfelt Ceremonies Ltd | Administrative & support | 2026 |
| Higgs Digital Ltd | Information & communication | 2025 |
| High Angle Pictures Ltd | Information & communication | 2007 |
| High Class Delivery Ltd | Hospitality | 2024 |
| High Class Laundry Services Limited | Administrative & support | 2008 |
| High END Solutions Ltd | Construction | 2026 |
| High Fidelity Engineering Limited | Manufacturing | 2018 |
| High Fire Holdings Limited | Financial services | 2019 |
| High Five Homes Ltd | Real estate | 2018 |
| High Hill Logistics Ltd | Transport & logistics | 2023 |
| High Hope Property Limited | Real estate | 2017 |
| High Hopes Day Nursery (Glenfield) Limited | Health & social care | 2023 |
| High Hopes Day Nursery School Ltd | Health & social care | 2014 |
| High Link IT Limited | Information & communication | 2023 |
| High NET Worth Advisory Limited | Professional & scientific | 2016 |
| High Peak Buses Ltd | Transport & logistics | 2011 |
| High Point Scaffolding Ltd | Construction | 2025 |
| High Quality Cleaning Ltd | Administrative & support | 2021 |
| High Quality Motor Group Ltd | Wholesale & retail | 2024 |
| High Roller Interior Deco UK Ltd | Construction | 2025 |
| High Sky Private Limited | Professional & scientific | 2022 |
| High Society (Market Harborough) Limited | Administrative & support | 2008 |
| High Speed Competitions Limited | Other services | 2021 |
| High Speed Ltd | Wholesale & retail | 2023 |
| High Standard Scaffolding (Midlands) Limited | Construction | 2023 |
| High Street Evington Management Company Limited | Households | 2002 |
| High Street News Ltd | Wholesale & retail | 2025 |
| High Surveys Ltd | Other services | 2021 |
| High Tech Midlands Construction Ltd | Construction | 2023 |
| High Technology Solutions Limited | Information & communication | 2015 |
| High Top Construction Ltd | Construction | 2026 |
| High View Law Limited | Professional & scientific | 2023 |
| HIGH5 (Leic) Ltd | Manufacturing | 2023 |
| HIGH5 Clothing Limited | Manufacturing | 2020 |
| Highbury House Ltd | Administrative & support | 2022 |
| Highclass Developments Limited | Construction | 2018 |
| Highcross Building Services Limited | Construction | 2011 |
| Highcross Classic Limited | Hospitality | 2025 |
| Highcross Engineering Ltd | Manufacturing | 2016 |
| Highcross Healthcare Ltd | Manufacturing | 2015 |
| Highcross Law (Leicester) Ltd | Professional & scientific | 2013 |
| Highcross Law LLP | | 2008 |
| Highcross Law Properties Limited | Real estate | 2022 |
| Highem Limited | Wholesale & retail | 2004 |
| Higher Limited | Manufacturing | 1997 |
| Higher Online Presence Ltd | Information & communication | 2016 |
| Higher Window Cleaning Limited | Administrative & support | 2025 |
| Highfield Associate Taxis Ltd | Transport & logistics | 2025 |
| Highfield Halal Butcher Ltd | Wholesale & retail | 2023 |
| Highfield Pizza Limited | Hospitality | 2025 |
| Highfield Property Management KLY Ltd | Real estate | 2023 |
| Highfield Restaurant Limited | Hospitality | 2025 |
| Highfield Street Limited | Real estate | 2010 |
| Highfield Tailoring & Gift Shop Ltd | Wholesale & retail | 2023 |
| Highfields Community Association | Administrative & support | 2007 |
| Highgate Drive 1962 Limited | Extraterritorial | 2014 |
| Highgate Securities Limited | Construction | 2015 |
| Highgen TECH01 Ltd | Wholesale & retail | 2026 |
| Highgrade Real Estate Limited | Real estate | 2015 |
| Highgrove Construction Group Ltd | Construction | 2025 |
| Highland Autos Ltd | Professional & scientific | 2026 |
| Highland Mining & Resources Ltd | Real estate | 2019 |
| Highlane Excellence Ltd | Construction | 2016 |