| H&B LAB Ltd | Health & social care | 2022 |
| Hair Station 2 Ltd | Other services | 2022 |
| Halal Spot Ltd | Information & communication | 2025 |
| Hall Havens for Young People CIC | Health & social care | 2025 |
| Hallcross Dental Practice Limited | Health & social care | 2008 |
| Hallcross Holdings Ltd | Health & social care | 2017 |
| Hallmark Land & Homes Ltd | Real estate | 2015 |
| Hamilton Construction Ltd | Construction | 2026 |
| Happy Bath Days Ltd | Wholesale & retail | 2020 |
| Harekrishna Property Ltd | Real estate | 2025 |
| Harmain 47 Ltd | Hospitality | 2025 |
| Hatch Factory Limited | Wholesale & retail | 2025 |
| Haven Support Ltd | Health & social care | 2022 |
| Health & Beauty Academy Iris Ltd | Other services | 2014 |
| Health & Glamour Limited | Wholesale & retail | 2017 |
| Heather White Limited | Other services | 2017 |
| Hela Kala Dance & Theater CIC | Arts & recreation | 2025 |
| Helping Hands Community Trust | Health & social care | 2001 |
| Heritage Knitting Co Ltd | Manufacturing | 2026 |
| High Gain House Ltd | Hospitality | 2023 |
| Highkey Music Ltd | Information & communication | 2020 |
| Hinckley Accountants Ltd | Professional & scientific | 2007 |
| HK Financial Connect Limited | Financial services | 2025 |
| HK PVT Ltd | Wholesale & retail | 2021 |
| HLS Hire and Logistics Ltd | Transport & logistics | 2019 |
| Holiday Lets UK Ltd | Real estate | 2020 |
| Holywell Tools Ltd | Wholesale & retail | 2013 |
| Hossain Holdings Limited | Real estate | 2024 |
| Hot POT Express Ltd | Wholesale & retail | 2026 |
| Hot TUB Suppliers Limited | Wholesale & retail | 2012 |
| Hotspot Holdings Limited | Financial services | 2025 |
| Hotspot Tooling Limited | Manufacturing | 2004 |
| Houghton Accountants Limited | Professional & scientific | 2023 |
| Houghton Sales Ltd | Manufacturing | 2024 |
| HTD THEGR8 Ltd | Health & social care | 2023 |
| Hughie (Leicester) Limited | Wholesale & retail | 1993 |
| Hughie (Property) Limited | Real estate | 2002 |
| Huna and Hunak Ltd | Wholesale & retail | 2026 |
| Hungry Chicken Ltd | Hospitality | 2023 |
| HV Oadby Ltd | Hospitality | 2024 |
| HVG Chicken Ltd | Hospitality | 2024 |
| HVL Granby Ltd | Hospitality | 2025 |
| HVL Oadby Ltd | Hospitality | 2025 |
| HVU Chicken Ltd | Hospitality | 2024 |
| I SPY 5 Ltd | Professional & scientific | 2016 |
| IBC Worldwide Express Ltd | Transport & logistics | 2022 |
| IDI Courier Delivery Ltd | Transport & logistics | 2026 |
| Igby's Slime Squad Ltd | Wholesale & retail | 2024 |
| IGS House Trading Ltd | Real estate | 2021 |
| Ilaj-By-G Ltd | Health & social care | 2025 |
| Image Displays UK Limited | Manufacturing | 2002 |
| Imtiaz Rent and Reality Ltd | Real estate | 2025 |
| IN the Moment Media Ltd | Real estate | 2017 |
| Inclusio CIC | Health & social care | 2024 |
| Inkrite Limited | Wholesale & retail | 1998 |
| Innofab Ltd | Manufacturing | 2012 |
| Insomnia Coalville Ltd | Hospitality | 2017 |
| Insomnia Market Harborough Ltd | Hospitality | 2014 |
| Inspired Gardens & Landscaping Ltd | Construction | 2022 |
| Interiors by Design Limited | Wholesale & retail | 2009 |
| IOA Property Solutions Limited | Real estate | 2025 |
| Iosh Services Limited | Information & communication | 1984 |
| IQA Consult Ltd | Professional & scientific | 2018 |
| Island Sunset Ltd | Administrative & support | 2025 |
| IT Care and Compliance Limited | Information & communication | 2024 |
| Iversym Solutions Ltd | Information & communication | 2017 |
| Iview Data Limited | Information & communication | 2002 |
| J & a Accounting Ltd | Information & communication | 2012 |
| J & L (Leicester) Ltd | Construction | 2023 |
| J RAM Investments Limited | Households | 2020 |
| J Skinner Property Services Limited | Real estate | 2016 |
| J T Services (Leicester) Limited | Professional & scientific | 2008 |
| Jacss Property Services Limited | Construction | 2025 |
| Jadeprime Limited | Administrative & support | 1989 |
| Jafehi Limited | Real estate | 2024 |
| Jaga Life Ltd | Manufacturing | 2021 |
| JAI Estates Ltd | Real estate | 2023 |
| James Price Ltd | Financial services | 2017 |
| James William Ltd | Wholesale & retail | 2023 |
| Japanese OEM Auto Parts UK Ltd | Wholesale & retail | 2025 |
| JAS Transport Services Ltd | Transport & logistics | 2023 |
| Jasmine Roadways Limited | Transport & logistics | 1990 |
| Jaxtina UK International R&D and Cooperation Centre Ltd | Professional & scientific | 2024 |
| Jay's Heating and Energy Ltd | Construction | 2025 |
| JB Building and Roofing Ltd | Construction | 2026 |
| JBP Nagra Transport Ltd | Transport & logistics | 2022 |
| JD Reynolds LV Jointers Ltd | Construction | 2015 |
| JE Trans Limited | Transport & logistics | 2016 |
| JF Brick Developments Ltd | Construction | 2025 |
| JH2 Designs Ltd | Manufacturing | 2015 |
| Jhgrp Ltd | Manufacturing | 2023 |
| JJM Consultancy Ltd | Information & communication | 2022 |
| JJW Communications Ltd | Information & communication | 2026 |
| JKP Pharm Ltd | Health & social care | 2024 |
| Joint Christian Services Limited | Other services | 2006 |
| Jonah Benjamin Property Ltd | Real estate | 2025 |
| Joseph Hannah Properties Ltd | Real estate | 2025 |
| Jpullin Roofing Ltd | Extraterritorial | 2024 |
| JSP Midlands Transport Ltd | Transport & logistics | 2025 |
| Jspanjeta Transport Ltd | Transport & logistics | 2020 |