| Half Hundred Systems Ltd | Transport & logistics | 2019 |
| Hallam & Sutherns Saab Service Ltd | Wholesale & retail | 2003 |
| Hallgate Fields Management Company Limited | Households | 2020 |
| Hallwood Close Management Company Limited | Households | 2005 |
| Halo Bookkeeping & Accounting Limited | Professional & scientific | 2011 |
| Hamilton Globe Ltd | Real estate | 2025 |
| Hands Road Management Company Limited | Households | 2014 |
| Hannah Cowell Financial Services Ltd | Financial services | 2019 |
| Hanny DTL Shop Ltd | Wholesale & retail | 2025 |
| Hanslope Residents Management Company Limited | Households | 2017 |
| Happy Hedgehogs Ltd | Education | 2019 |
| Happy Trowel Domestic Plastering Services Ltd | Construction | 2022 |
| Hard Network Connections Ltd | Professional & scientific | 2025 |
| Hardiment Garden Spaces Ltd | Construction | 2026 |
| Hardiment Property Services Ltd | Construction | 2022 |
| Hardstuff Ltd | Wholesale & retail | 2021 |
| Hardwick Construction (Midlands) Limited | Construction | 1979 |
| Hardwick Studio Architects Ltd | Professional & scientific | 2022 |
| Harir Ltd | Other services | 2024 |
| Harley Homes Holdings Limited | Professional & scientific | 2014 |
| Harley Homes Limited | Construction | 1986 |
| Harley Homes Newco Limited | Construction | 2014 |
| Harleyquin Holdings Limited | Professional & scientific | 2014 |
| Harrington Park Management Company Limited | Households | 2013 |
| Harrington Road (Desborough) Management Company Limited | Households | 2015 |
| Harrison Commercial Limited | Wholesale & retail | 1996 |
| Harrisons Holdings Midlands Ltd | Real estate | 2024 |
| Harrow & Plough Limited | Agriculture & fishing | 2025 |
| Hart Haulage Ltd | Transport & logistics | 2025 |
| Hartshorne Consultants Limited | Professional & scientific | 2026 |
| Harvey & Clark Holdings Limited | Financial services | 2025 |
| Harvills Grange Management Company Limited | Households | 2015 |
| Harwood Place (Woolton Hill) Management Company Limited | Households | 2015 |
| Hasell-Lee Properties Limited | Real estate | 2020 |
| Hatch Catering Limited | Wholesale & retail | 2012 |
| HAWKSPROPERTYSERVICES247 Limited | Construction | 2023 |
| Hawx Pro Ltd | Wholesale & retail | 2025 |
| Hayfield Chase (Tiddington) Management Company Limited | Households | 2017 |
| Hayfield Crescent (Little Kimble) Management Company Limited | Households | 2022 |
| Hayfield Gardens (Toddington) Management Company Limited | Households | 2024 |
| Hayfield Gate (Clifton) Management Company Limited | Households | 2020 |
| Hayfield Grange (Southam) Management Company Limited | Households | 2019 |
| Hayfield Green (Stanton Harcourt) Management Company Limited | Households | 2019 |
| Hayfield Heights (Gotherington) Management Company Limited | Households | 2024 |
| Hayfield Homes (Blunsdon)Management Company Limited | Households | 2021 |
| Hayfield Homes (Great Gransden) Management Company Limited | Households | 2020 |
| Hayfield Homes (Hanslope) Management Company Limited | Households | 2021 |
| Hayfield Homes (Woburn Sands) Management Company Limited | Households | 2020 |
| Hayfield Lakes (Clophill) Management Company Limited | Households | 2022 |
| Hayfield Manor (Adderbury) Management Company Limited | Households | 2023 |
| Hayfield Meadow (Hallow) Management Company Limited | Households | 2018 |
| Hayfield Park (Bromham) Management Company Limited | Households | 2021 |
| Hayfield Place (Silsoe) Management Company Limited | Households | 2019 |
| Hayfield Views (Great Bourton) Management Company Limited | Households | 2017 |
| Hayfields (Southmoor) Management Company Limited | Households | 2018 |
| HB Care Services Ltd | Health & social care | 2025 |
| HBB Management Ltd | Real estate | 2026 |
| HBI (UK) Ltd | Construction | 2012 |
| Hcbf Ltd | Professional & scientific | 2016 |
| HEAD2TOE Developments Burton Ltd | Construction | 2013 |
| Healthnet Homecare (UK) Limited | Wholesale & retail | 2009 |
| Healthnet Homecare Ltd | Health & social care | 2015 |
| Healthnova Lifesciences Ltd | Wholesale & retail | 2007 |
| Heartwood Community Woodland Group CIC | Agriculture & fishing | 2021 |
| Heaton Manufacturing Limited | Manufacturing | 2017 |
| Heckels and Hall Ltd | Construction | 2025 |
| Helix Flow Ltd | Hospitality | 2018 |
| Hellfire Productions Ltd | Information & communication | 2014 |
| Helm Payroll Contracting Limited | Professional & scientific | 2014 |
| Helping Hands Heating Ltd | Construction | 2020 |
| Here Hare Here Limited | Financial services | 2020 |
| Heritage Court (Walsall) Management Limited | Households | 2004 |
| Hetty's Aesthetics Ltd | Other services | 2025 |
| Hewitt Robins International Holdings Limited | Mining & quarrying | 2007 |
| Hi-Tech Flooring Solutions Ltd | Administrative & support | 2017 |
| Hide Hair Ltd | Other services | 2018 |
| Higgs Transport Solutions Ltd | Transport & logistics | 2014 |
| Highstairs View Management Company Limited | Households | 2023 |
| Highwall Business Park Management Company Limited | Households | 2021 |
| Highway Excavations Ltd | Construction | 2026 |
| Highwoods Green (Breedon on the Hill) Management Company Limited | Households | 2021 |
| Hill (Duffield RD) Management Limited | Households | 2018 |
| Hillcrest Fabrications Limited | Manufacturing | 1985 |
| Hillcrest Fish Bar Ltd | Wholesale & retail | 2020 |
| Hilltop Coatings Limited | Manufacturing | 2023 |
| Hilton Brook Residents Management Company Limited | Households | 2006 |
| Hines Communications Ltd | Information & communication | 2015 |
| Hinks Group Limited | Wholesale & retail | 2020 |
| Hinks Ltd. | Construction | 1998 |
| Hinks Plant Services Limited | Wholesale & retail | 2020 |
| Hire With Puck Ltd | Administrative & support | 2026 |
| HJ Nicholls Ltd | Construction | 2015 |
| HJE Buildings Ltd | Real estate | 2025 |
| HK Food Express Ltd | Hospitality | 2025 |
| HKN Composites Ltd | Manufacturing | 2023 |
| Hksupplies Ltd | Wholesale & retail | 2025 |
| Hmao Ltd | Professional & scientific | 2021 |
| HMW Heating Services Limited | Professional & scientific | 2016 |
| Hodgett Hydraulics Limited | Manufacturing | 2020 |
| Holistica Care Ltd | Health & social care | 2023 |