| Gunthorpe Utilities Limited | Other services | 2013 |
| Hackney-Mortell Productions Ltd | Arts & recreation | 2026 |
| Hair Space Rutland Ltd | Other services | 2020 |
| Hall Gardens Drive (Uppingham) Management Company Limited | Extraterritorial | 2006 |
| Halsbury Services Ltd | Real estate | 2018 |
| Hambleton Bakery Limited | Hospitality | 2016 |
| Hambleton Farms Limited | Manufacturing | 2006 |
| Hambleton Hall Limited | Hospitality | 2017 |
| Hambleton Orchard Ltd | Agriculture & fishing | 2014 |
| Hambletons Holding Company Limited | Financial services | 2024 |
| Hanu Services Ltd | Real estate | 2025 |
| Harborough Letting Agents Limited | Real estate | 2026 |
| Harborough Properties Limited | Real estate | 2021 |
| Harborough Service Apartments Limited | Hospitality | 2025 |
| Harley Wilde Limited | Real estate | 2025 |
| Harness Projects Limited | Professional & scientific | 2020 |
| Harts Group Ltd | Hospitality | 2008 |
| Harvey Consultancy Limited | Professional & scientific | 1994 |
| Harvey Winning & Co Ltd | Professional & scientific | 1987 |
| Hatch Events Ltd | Administrative & support | 2015 |
| Haven Brands Ltd | Wholesale & retail | 2025 |
| Havenbrook Group Ltd | Wholesale & retail | 2024 |
| Hawkswell Investments Limited | Real estate | 2021 |
| Haybales Tipi Bar Limited | Hospitality | 2024 |
| Hazelnutt Ltd | Professional & scientific | 2024 |
| HC Courts Tennis Court Maintenance UK Limited | Administrative & support | 2011 |
| Healing the Person Limited | Wholesale & retail | 2007 |
| Health 360 Solutions Limited | Health & social care | 2020 |
| Healthweave Limited | Health & social care | 2026 |
| Heavenly Bake Holdings Limited | Financial services | 2022 |
| Hedgecairn Limited | Real estate | 2016 |
| Helipads for Hospitals | Manufacturing | 2016 |
| Hello Empower Coaching Limited | Other services | 2025 |
| Hemsley Family Holdings Ltd | Real estate | 2025 |
| Henily Clothing Ltd | Wholesale & retail | 2026 |
| Henlow Ltd | Wholesale & retail | 2025 |
| Henry Spain Property Limited | Real estate | 2016 |
| Herbs Rural Community Broadband Ltd | Information & communication | 2015 |
| Hereward Homes (Greetham) Limited | Construction | 2015 |
| Herido Ltd | Wholesale & retail | 2023 |
| Hiden Ltd | Wholesale & retail | 2014 |
| Higgins Partnership | | 1996 |
| Highfields Business Loans Ltd | Financial services | 2017 |
| Highgate Aviation Limited | Transport & logistics | 2026 |
| Highwell Consultants Ltd | Professional & scientific | 2019 |
| Hilbridge Ltd | Wholesale & retail | 2003 |
| Hillsford Bridge Limited | Financial services | 2023 |
| HIR Foods Ltd | Hospitality | 2019 |
| HL09 Ltd | Professional & scientific | 2013 |
| Hmhb Services Limited | Professional & scientific | 2023 |
| HMW Engineering & Projects Ltd | Professional & scientific | 2025 |
| Hoggys Grill Ltd | Hospitality | 2020 |
| Holdco HTS Limited | Professional & scientific | 2012 |
| Home Farm Management Company (Burley) Limited | Households | 1999 |
| Home Straight Partnership Ltd | Health & social care | 2012 |
| Homefield Green Management Company Limited | Households | 2024 |
| Homefront Hub Ltd | Wholesale & retail | 2025 |
| Horisun Ltd | Construction | 2022 |
| Horsepower Racing (UK) Limited | Arts & recreation | 2011 |
| Horseshoe House Ltd | Hospitality | 2022 |
| Horseshoe Properties Limited | Real estate | 2001 |
| Horsham Reach Limited | Households | 2018 |
| Houghton Brothers Limited | Construction | 2018 |
| Houghton Group Holdings Limited | Real estate | 2024 |
| Houghton Storage Ltd | Transport & logistics | 2021 |
| House of Rutland Limited | Professional & scientific | 2025 |
| Howlett Hygienic Services Limited | Administrative & support | 1993 |
| Howlett Leisure Developments Limited | Construction | 2000 |
| Howzat Limited | Hospitality | 2023 |
| HPW Engineering Projects Limited | Construction | 2022 |
| Htvn Properties Ltd | Real estate | 2023 |
| Hub 8 Limited | Wholesale & retail | 2015 |
| Hurst & Flynn Tree Care Ltd | Construction | 2021 |
| Hurst & SON Fencing & Landscaping Ltd | Administrative & support | 2025 |
| Hutchinson & Ogilvy Wealth Property Investment Ltd | Real estate | 2026 |
| Huut Limited | Arts & recreation | 2025 |
| Hydroshield PVT Ltd | Administrative & support | 2025 |
| Hyperbole Copy Ltd | Professional & scientific | 2022 |
| I Design Furniture Ltd | Manufacturing | 2014 |
| I P Online Limited | Manufacturing | 2006 |
| I.N.R Logics Limited | Transport & logistics | 2025 |
| I.W. Renner & Sons | Agriculture & fishing | 1987 |
| Iacam Limited | Administrative & support | 2009 |
| Iains Store Limited | Wholesale & retail | 2024 |
| IAN Burnett Golf Professional Limited | Arts & recreation | 2012 |
| Icclaw Limited | Professional & scientific | 2010 |
| Icdt Limited | Financial services | 2013 |
| Iconicstar Limited | Construction | 1999 |
| Iconicsun Limited | Extraterritorial | 1999 |
| IF Media Consultancy (UK) Limited | Administrative & support | 2014 |
| Ignite Dating Group Ltd | Other services | 2019 |
| Ignition Studios Ltd | Information & communication | 2018 |
| Immerse Properties Limited | Real estate | 2023 |
| Inconceivable Consulting Limited | Information & communication | 2024 |
| Ineke Ward Consulting Limited | Education | 2013 |
| Infield Innovation Limited | Agriculture & fishing | 2023 |
| Inkjet Solutions Ltd. | Manufacturing | 2012 |
| Innax Ltd | Wholesale & retail | 2025 |
| INSPIRE2TRI Community Interest Company | Arts & recreation | 2011 |
| Insytec Ltd | Information & communication | 2023 |