| Hillfield Construction Group Limited | Construction | 2026 |
| Hillfoot Building Services Ltd | Construction | 2025 |
| Hillfoot Developments Limited | Real estate | 1996 |
| Hillfoot Management Ltd Ltd | Construction | 2017 |
| Hillfoot Management Services Ltd | Construction | 2024 |
| Hillfoot Trading Company Ltd | Administrative & support | 2014 |
| Hilli Watch Company Ltd | Wholesale & retail | 2023 |
| Hillmay Soft Ltd | Information & communication | 2026 |
| Hills Bricklaying Services Limited | Construction | 2013 |
| Hills Cross Ltd | Real estate | 2024 |
| Hills Decs & Building Services Limited | Construction | 2014 |
| Hills Tool & Plant Hire Limited | Construction | 2011 |
| Hillsborough Law NOW Ltd | Professional & scientific | 2022 |
| Hillscroft Management Company Limited | Real estate | 2011 |
| Hillside 24 Limited | Construction | 2026 |
| Hillside Court (Woolton) Management Company Limited | Households | 1984 |
| Hillside Dental Practice Ltd | Health & social care | 2024 |
| Hillside Motors (North West) Ltd | Wholesale & retail | 2026 |
| Hilton Physiotherapy Ltd | Health & social care | 2008 |
| Hilton-Jones Estates Ltd | Real estate | 2025 |
| Hiltons the Jewellers Ltd | Other services | 2020 |
| Hilux Building Solutions Limited | Real estate | 2018 |
| Hilux FM North and South Limited | Administrative & support | 2017 |
| Himalayas Hospitality Ltd | Hospitality | 2025 |
| Himaliyan Trading Company Ltd | Wholesale & retail | 2025 |
| Himeng Ltd | Construction | 2024 |
| Himsworth Properties Limited | Real estate | 2014 |
| Hincha Limited | Wholesale & retail | 2024 |
| Hind Properties Ltd | Real estate | 2025 |
| Hipkiss Properties Ltd | Real estate | 2018 |
| Hippodrome Properties Limited | Real estate | 1998 |
| Hipswell Limited | Hospitality | 2026 |
| Hira Recruitment Ltd | Administrative & support | 2026 |
| Hiraeth International Limited | Manufacturing | 2025 |
| Hiraeth PTY Limited | Professional & scientific | 2017 |
| Hire and Safety UK Ltd | Administrative & support | 2009 |
| Hire House Recruitment Limited | Administrative & support | 2026 |
| Hire My Hot TUB Ltd | Construction | 2021 |
| Hiroo Property Management Ltd | Real estate | 2019 |
| HIS & Hers Watches UK Ltd | Wholesale & retail | 2023 |
| HIS Banner Events Ltd | Other services | 2017 |
| Historic Sculptures Ltd | Arts & recreation | 2017 |
| HIT the Accelerator Limited | Professional & scientific | 2016 |
| Hitchmough Limited | Real estate | 2019 |
| Hitec Exports Limited | Wholesale & retail | 2003 |
| Hitec Instruments Limited | Wholesale & retail | 2018 |
| Hitem Hard Media Ltd | Information & communication | 2023 |
| Hive Technology and Digital Consultancy Services Limited | Information & communication | 2015 |
| Hiveneo Ltd | Wholesale & retail | 2024 |
| Hivibenutrition Limited | Manufacturing | 2020 |
| HIW Group Ltd | Hospitality | 2024 |
| Hixxy Ltd | Arts & recreation | 2022 |
| Hiyrd Ltd | Information & communication | 2022 |
| HIZ Roomz (Runcorn) Ltd | Other services | 2013 |
| HJ Care Limited | Health & social care | 2024 |
| HJ Coughlin Consultancy Ltd | Information & communication | 2022 |
| HJ Enterprises Limited | Administrative & support | 2008 |
| HJ Executive Travel Ltd | Transport & logistics | 2024 |
| HJ Foam Mouldings Limited | Manufacturing | 1999 |
| HJ Housing Development Limited | Real estate | 2019 |
| HJA Consulting Limited | Information & communication | 2007 |
| HJC (NW) Limited | Construction | 2025 |
| HJH Estates Ltd | Real estate | 2023 |
| HJL Business Services Limited | Financial services | 2012 |
| HJM1 Limited | Real estate | 2023 |
| HJN Property Group Ltd | Real estate | 2025 |
| HJN Storage Ltd | Real estate | 2025 |
| HJP Consultants Limited | Professional & scientific | 2022 |
| HJT Property (NW) Limited | Real estate | 2020 |
| HJW Estate Management Ltd | Real estate | 2024 |
| HK Private Limited | Wholesale & retail | 2021 |
| HK Singh & OFF License Ltd | Wholesale & retail | 2025 |
| HK2026 Ltd | Hospitality | 2026 |
| HKD Group Ltd | Real estate | 2020 |
| Hker Oasis Limited | Hospitality | 2024 |
| HKJ Investments (UK) Limited | Financial services | 2013 |
| HKP Properties Limited | Professional & scientific | 1999 |
| HKP Property Services Limited | Construction | 2024 |
| HL (Magnolia) Realisations Limited | Professional & scientific | 2020 |
| HL3 Competitions Ltd | Arts & recreation | 2026 |
| HLA Trading Ltd | Hospitality | 2025 |
| HLB Communications Limited | Wholesale & retail | 2019 |
| HLC Property Management Limited | Real estate | 2015 |
| Hlcf Limited | Real estate | 2016 |
| Hlcyhk Property Limited | Real estate | 2020 |
| HLP Consultancy Ltd | Professional & scientific | 2025 |
| Hlr&Co Property Management Limited | Households | 2025 |
| HLS Commercial Ltd | Professional & scientific | 2023 |
| HLS DEV Ltd | Construction | 2024 |
| HLS Property Management Limited | Households | 2025 |
| Hlsz Limited | Arts & recreation | 2020 |
| Hlth Care Ltd | Public administration | 2023 |
| Hlth Compliance Limited | Other services | 2022 |
| Hlth Digital Limited | Professional & scientific | 2018 |
| Hlth Manage Ltd | Other services | 2023 |
| HM Happy Cart Ltd | Wholesale & retail | 2026 |
| HM Homecare Limited | Health & social care | 2022 |
| HM Lance Properties Ltd | Real estate | 2026 |
| HM Novatrade Ltd | Wholesale & retail | 2025 |
| HM Plumbing & Maintenance Services Ltd | Construction | 2016 |