| HOW to CUT IT Media Ltd | Professional & scientific | 2018 |
| HOW3 Ltd | Information & communication | 2015 |
| Howard Industrial Limited | Construction | 2015 |
| Howards Way Hair Ltd | Other services | 2016 |
| Howes Percival LLP | | 2006 |
| Howes Plastering Limited | Construction | 2022 |
| Howper 1004 Limited | Real estate | 2020 |
| Howper 455 Limited | Real estate | 2003 |
| Howper 685 Limited | Extraterritorial | 2007 |
| Howper 900 Limited | Real estate | 2017 |
| Howper 911 Limited | Professional & scientific | 2018 |
| Howsam Golf Holdco Ltd | Financial services | 2025 |
| Howsam Golf JV Ltd | Wholesale & retail | 2025 |
| Howserv Limited | Financial services | 1999 |
| Howserv Services Limited | Financial services | 2010 |
| Hoxton Devworks Ltd | Information & communication | 2024 |
| Hoyler Engineering Ltd | Professional & scientific | 2025 |
| Hoyo and Kisu Ltd | Wholesale & retail | 2022 |
| HP Directors Limited | Professional & scientific | 1988 |
| HP Lettings (Northampton) Ltd | Real estate | 2021 |
| HP Logistics Ltd | Transport & logistics | 2019 |
| HP Nominees Limited | Professional & scientific | 1983 |
| HP Secretarial Services Limited | Professional & scientific | 1983 |
| HPC Parts Ltd | Wholesale & retail | 2022 |
| HPE Developments Limited | Real estate | 2025 |
| HPG Everglow Ltd | Real estate | 2023 |
| HPG Life Ltd | Real estate | 2021 |
| HPJ Consultants Ltd | Administrative & support | 2013 |
| Hpro Constructions Limited | Construction | 2018 |
| HPS ES Holdings Ltd | Financial services | 2025 |
| HR Solutions Direct Ltd | Administrative & support | 2021 |
| HR Wise Ltd | Professional & scientific | 2017 |
| HR Without Fuss Limited | Administrative & support | 2011 |
| Hrai Constructions Limited | Construction | 2017 |
| Hrdc Limited | Arts & recreation | 2008 |
| HRG Group Limited | Professional & scientific | 2004 |
| HRP Residence Limited | Real estate | 2025 |
| HRP2020 Limited | Wholesale & retail | 2020 |
| HS Burgers PVT Ltd | Hospitality | 2024 |
| HS Pathology Services Limited | Health & social care | 2021 |
| HSB Consultancy Ltd | Information & communication | 2024 |
| HSB Hub Ltd | Other services | 2021 |
| HSB Travels Ltd | Administrative & support | 2024 |
| HSD Groundworks Ltd | Construction | 2022 |
| HSK Courier Limited | Other services | 2015 |
| Hsll Property Services Ltd | Real estate | 2022 |
| Hsna Groundwork Limited | Construction | 2017 |
| HSP Couriers Ltd | Transport & logistics | 2014 |
| Hsqs Ltd | Professional & scientific | 2008 |
| Hstl Ltd | Hospitality | 2021 |
| HTC Arbor Services Ltd | Agriculture & fishing | 2016 |
| HTM Pipework Engineering Ltd | Professional & scientific | 2026 |
| HTP Services Limited | Construction | 2019 |
| HUA Tang Ltd | Hospitality | 2016 |
| Huawei Kitchen Extract Clean Limited | Administrative & support | 2024 |
| Hub & Spoke Cafe Ltd | Hospitality | 2020 |
| Huckleberry's Hairdressers Limited | Other services | 2008 |
| Huckscott Developments Limited | Construction | 2017 |
| Huddle & Bliss Limited | Wholesale & retail | 2009 |
| Hudson Industrial Supplies Limited | Wholesale & retail | 2016 |
| Hudson PR Limited | Professional & scientific | 2005 |
| Hughes Property Services Limited | Real estate | 2019 |
| Hughes Roofing Limited | Construction | 2022 |
| Hulkpage Ltd | Information & communication | 2024 |
| Human Capital Project Ltd | Information & communication | 2014 |
| Human Resources Solutions Ltd | Professional & scientific | 2019 |
| Human Resources Without Fuss Limited | Administrative & support | 2011 |
| Humanwise Ltd | Health & social care | 2024 |
| Humber and Yorkshire CDA Limited | Health & social care | 2009 |
| Humber Haulage Ltd | Transport & logistics | 2018 |
| Humea Advisory Ltd | Extraterritorial | 2025 |
| Humectare Limited | Professional & scientific | 2016 |
| Humley AI Limited | Administrative & support | 2017 |
| Humley Holdings Limited | Financial services | 2017 |
| Humley Limited | Information & communication | 2014 |
| Hummingbird Drama Productions Limited | Arts & recreation | 2021 |
| Hummingbird Hyperbaric Ltd | Health & social care | 2026 |
| Hungry Penguin Ltd | Hospitality | 2019 |
| Hunsbury Electrical Limited | Construction | 2024 |
| Hunsbury Glazing Ltd | Construction | 2022 |
| Hunsbury Heating Ltd | Construction | 2018 |
| Hunsbury Homes Limited | Administrative & support | 2022 |
| Hunsbury Scaffolding Ltd | Construction | 2025 |
| Hunter Heating Ltd | Construction | 2024 |
| Hunter Hospitality Limited | Hospitality | 2009 |
| Hunter Irrigation (UK) Limited | Professional & scientific | 1996 |
| Hunter M&E Ltd | Construction | 2021 |
| Huntergrange Limited | Real estate | 2000 |
| Hunterjoinery Limited | Manufacturing | 2025 |
| Hunters Northampton Limited | Construction | 2025 |
| Hunters Solutions 2010 Ltd | Extraterritorial | 2010 |
| Huntswell Social Work Ltd | Health & social care | 2023 |
| Hunt’S Drainage and Exterior Cleaning Ltd | Water & waste | 2025 |
| Hunyadi Florin Ltd | Transport & logistics | 2020 |
| Hurd Fiduciary Ltd | Financial services | 2026 |
| Hurd Holdings Ltd | Professional & scientific | 2026 |
| Hurle Holdings Limited | Financial services | 2025 |
| Hurley Developments Ltd | Construction | 2014 |
| Hurlfield Limited | Health & social care | 2006 |
| Hurricane HL Ltd | Administrative & support | 2024 |