| Hive Services Group Limited | Financial services | 2021 |
| Hiverge Ltd | Professional & scientific | 2024 |
| HJ Cameron Cars Limited | Wholesale & retail | 2025 |
| HJ Strategy Limited | Information & communication | 2021 |
| Hjgrieve Consultancy Ltd | Professional & scientific | 2022 |
| HJL Consulting Cambs Ltd | Information & communication | 2025 |
| HJL Ventures Limited | Real estate | 2022 |
| HK Jingke Investment Trading Co., Ltd | Extraterritorial | 2025 |
| HK Polygon Limited | Professional & scientific | 2025 |
| HK Puton Filter Limited | Wholesale & retail | 2020 |
| HK Qiaoxiang Import & Export Limited | Wholesale & retail | 2019 |
| HKB Property Investments Ltd | Real estate | 2026 |
| HKG Composites Ltd | Professional & scientific | 2026 |
| Hkun International Co., Ltd. | Wholesale & retail | 2025 |
| HKW Engineering Limited | Manufacturing | 2002 |
| HL Composites Ltd | Manufacturing | 2021 |
| HLD Athletics Ltd | Wholesale & retail | 2025 |
| Hllozzi Ltd | Manufacturing | 2025 |
| Hlme Ltd | Professional & scientific | 2022 |
| HLX Industrial UK Co., Ltd | Wholesale & retail | 2022 |
| Hmaq Ltd | Manufacturing | 2024 |
| HMC Lane Limited | Households | 2018 |
| HME Clear-Com Ltd. | Manufacturing | 1997 |
| HMS Restaurant Limited | Hospitality | 2025 |
| HN Shinawa Logistics Ltd | Transport & logistics | 2025 |
| HN Studio 30 Limited | Other services | 2025 |
| Ho-Lee Tech Services Ltd | Information & communication | 2022 |
| Hobart Composites UK Ltd | Manufacturing | 2026 |
| Hobbykit Ltd | Manufacturing | 2017 |
| Hobor Trade Ltd | Wholesale & retail | 2025 |
| Hobson Catering Ltd | Hospitality | 2022 |
| Hockeys (Cambridge) Limited | Real estate | 2018 |
| Hockeys Estate Agents LLP | | 2021 |
| Hockleys Yard Management Company Limited | Households | 2004 |
| Hocs Cambridge Limited | Professional & scientific | 2015 |
| Hodder Consultants Ltd | Professional & scientific | 2023 |
| Hogan Aviation Services Limited | Manufacturing | 2017 |
| Hogan’S Homes Ltd | Real estate | 2024 |
| Hohoho Properties Limited | Real estate | 2023 |
| Holand Press Ltd | Information & communication | 2025 |
| Holbeach Meadows (Paddock) Management Company Limited | Households | 2021 |
| Holbeach Meadows Management Company Limited | Households | 2019 |
| Holben Holt Limited | Financial services | 2016 |
| Hold Tight Recordz Limited | Information & communication | 2023 |
| Holden Systems Limited | Information & communication | 2005 |
| Holder Soares Ltd | Health & social care | 2022 |
| Holistic Hair Care Expert Limited | Wholesale & retail | 2016 |
| Holistic Markets Trading Ltd | Financial services | 2021 |
| Holland Amit International Co., Ltd | Mining & quarrying | 2026 |
| Holland Aster Crop Nutrition Co., Ltd | Mining & quarrying | 2024 |
| Holland Benefert Co., Ltd | Wholesale & retail | 2024 |
| Holland Borun Plant Protection Co., Ltd | Mining & quarrying | 2026 |
| Holland Brown Medical Consultancy Limited | Health & social care | 2021 |
| Holland Elite Fertiliser International Ltd | Wholesale & retail | 2024 |
| Holland Meschley International Group Limited | Mining & quarrying | 2026 |
| Holland Minsk International Holding Co., Ltd | Wholesale & retail | 2024 |
| Holland Park Mansions (Leasehold) Limited | Households | 2000 |
| Holland Sievte Chemical Group Ltd | Mining & quarrying | 2021 |
| Holland Simaier Special Fertilizer Co., Ltd. | Wholesale & retail | 2023 |
| Hollandiva Group Trading Ltd | Wholesale & retail | 2025 |
| Holloway Group Limited | Construction | 2023 |
| Holly Consultancy Ltd | Professional & scientific | 2022 |
| Holly House Care Home Limited | Health & social care | 2000 |
| Holly Partners Ltd | Wholesale & retail | 2026 |
| Hollyday Limited | Professional & scientific | 2009 |
| Hollygate Green (Hollygate Lane, Cotgrave) Management Company Limited | Households | 2024 |
| Hollygate Park (Cotgrave) Management Company Limited | Households | 2015 |
| Holmen Wood Products Ltd | Agriculture & fishing | 1951 |
| Holmeoak Limited | Construction | 2018 |
| Holmewood (Littleport) Management Company Limited | Households | 2009 |
| Holstock Properties Ltd | Real estate | 2020 |
| Holt Homes (Cambridge) Ltd | Real estate | 2019 |
| Holton Lofts Ltd | Construction | 2017 |
| Holton Ltd | Construction | 2017 |
| Holttums Yard Limited | Households | 2003 |
| Holy Cluck Limited | Hospitality | 2025 |
| Homaster Industries Limited | Construction | 2022 |
| Home and Garden Project Limited | Construction | 2021 |
| Home From Home BED & Breakfast Limited | Hospitality | 2009 |
| Home Maintenace and Setup Ltd | Other services | 2025 |
| Home Spa Service Ltd | Administrative & support | 2025 |
| Home Trends Manufacturer Co., Ltd | Manufacturing | 2021 |
| Homebeat Limited | Wholesale & retail | 2026 |
| Homein Inhome Limited | Wholesale & retail | 2021 |
| Homelands Residents Association Limited | Households | 1997 |
| Homeler Ltd | Manufacturing | 2025 |
| Homepower Tools Co., Ltd. | Wholesale & retail | 2023 |
| Homequest Renovation Ltd | Construction | 2015 |
| Homer & Homer Limited | Real estate | 2021 |
| Homerento Ltd | Real estate | 2025 |
| Homerton Court Flats Limited | Households | 1990 |
| Homerton Ltd | Real estate | 2024 |
| Homes OM Limited | Real estate | 2021 |
| Homthia Ltd | Wholesale & retail | 2023 |
| Honarmand Limited | Arts & recreation | 2011 |
| Honest Consulting Limited | Wholesale & retail | 2026 |
| Honest Grapes Limited | Wholesale & retail | 2014 |
| Honest Ideas Group Ltd | Financial services | 2016 |
| Honest Ideas Ltd | Professional & scientific | 2007 |
| Honest Publishing Limited | Administrative & support | 2010 |