| Hexagon Consultants Limited | Professional & scientific | 2015 |
| Hexagon Strategy Limited | Professional & scientific | 2024 |
| Hexam Training Limited | Education | 2007 |
| Hexiliumpro Limited | Wholesale & retail | 2025 |
| Hexovian Limited | Information & communication | 2024 |
| Hexses Retail Ltd | Wholesale & retail | 2020 |
| HEY Housing Ltd | Real estate | 2024 |
| HEY Maisu Ltd | Information & communication | 2025 |
| HEY Media Ltd | Wholesale & retail | 2016 |
| HEY Residential Ltd | Real estate | 2026 |
| HEY Stay Accommodation Ltd | Real estate | 2022 |
| Heyes Consulting Limited | Manufacturing | 2014 |
| Heyh Investing Ltd | Financial services | 2024 |
| Heylo Housing Group Limited | Financial services | 2017 |
| Heylo Housing Holdco Limited | Financial services | 2026 |
| Heylo Housing Registered Provider Limited | Real estate | 2008 |
| Heylo Housing Secured Bond PLC | Administrative & support | 2018 |
| Heywood Cleaning Ltd | Transport & logistics | 2012 |
| Heywood House Trading Limited | Hospitality | 2009 |
| Heywood Old Court (Heywood) Management (NO.2) Limited | Households | 1975 |
| Hezha Ahmad Properties Ltd | Real estate | 2026 |
| HF Safety Services Ltd | Professional & scientific | 2023 |
| HFC (Stockton) Limited | Hospitality | 2025 |
| HFD Agent Limited | Professional & scientific | 2026 |
| HFL Global Limited | Financial services | 2022 |
| Hfls Investments UK Ltd | Wholesale & retail | 2021 |
| HFS Integrated Systems Ltd | Administrative & support | 2020 |
| HFX G Ltd | Wholesale & retail | 2026 |
| HG Advisory Ltd | Administrative & support | 2024 |
| HG Ashton Road Ltd | Real estate | 2021 |
| HG Construction & Civil Engineering Ltd | Construction | 2023 |
| HG Dent Ltd | Health & social care | 2019 |
| HG Electrical Services (Leeds) Ltd | Construction | 2019 |
| HG Gardening Leeds Ltd | Administrative & support | 2021 |
| HG Old Tower Ltd | Real estate | 2022 |
| HG Properties Yorkshire Ltd | Real estate | 2026 |
| HG Real Estate Ltd | Real estate | 2020 |
| HG Roofing Supplies Limited | Wholesale & retail | 2020 |
| HG Scaff Limited | Construction | 2020 |
| HGF Business Services Limited | Professional & scientific | 2010 |
| HGF Europe LLP | | 2019 |
| HGF IP Limited | Professional & scientific | 2013 |
| HGF Law LLP | | 2013 |
| HGF Legal Limited | Professional & scientific | 2025 |
| HGF Limited | Professional & scientific | 2014 |
| HGG Consulting Limited | Professional & scientific | 2021 |
| Hghh Holdings Limited | Financial services | 2022 |
| HGK Capital Limited | Professional & scientific | 2026 |
| HGM Investments Birmingham Ltd | Professional & scientific | 2021 |
| HGO Property Limited | Real estate | 2014 |
| HGP Torsion Holdco Limited | Financial services | 2023 |
| HGS Property Investments Ltd | Real estate | 2023 |
| Hgs-Uk Ltd | Wholesale & retail | 2017 |
| HH & EMG Investments Limited | Real estate | 2024 |
| HH Caterly Limited | Manufacturing | 2025 |
| HH Consultants & Law Support Ltd | Professional & scientific | 2025 |
| HH Investment Properties Ltd | Real estate | 2025 |
| HH Khan Ltd | Wholesale & retail | 2024 |
| HH NO. 1 Limited | Real estate | 2014 |
| HH NO. 2 Limited | Administrative & support | 2018 |
| HH NO. 3 Limited | Administrative & support | 2018 |
| HH NO. 5 Limited | Administrative & support | 2019 |
| HH NO. 6 Limited | Administrative & support | 2019 |
| HH NO.1 Holdings Limited | Financial services | 2019 |
| HH NO.1 New Holdings Limited | Extraterritorial | 2020 |
| HH NO.6 Holdco Limited | Extraterritorial | 2020 |
| HH NO.7 Limited | Real estate | 2025 |
| HH Properties Leeds Ltd | Real estate | 2016 |
| HH Property Management & Maintenance Leeds Limited | Extraterritorial | 2014 |
| HH Property Solutions Ltd | Real estate | 2023 |
| Hhas Catering Limited | Hospitality | 2024 |
| HHB Investments (York) Limited | Construction | 2010 |
| Hhealthcare (Leeds) Ltd | Health & social care | 2022 |
| HHH Consultants Limited | Mining & quarrying | 2023 |
| HHH Couriers Ltd | Transport & logistics | 2017 |
| HHH Property Investments Limited | Real estate | 2021 |
| Hhin Ltd | Construction | 2025 |
| HHL Startup Consulting Ltd | Wholesale & retail | 2025 |
| HHM Medical Ltd | Wholesale & retail | 2020 |
| Hhpdn Ltd | Health & social care | 2010 |
| HHS Minco Limited | Financial services | 2021 |
| HHS Property Maintenance Ltd | Construction | 2026 |
| HHU Ltd | Health & social care | 2025 |
| Hhwn Limited | Wholesale & retail | 2021 |
| HI Profit Ltd | Professional & scientific | 2017 |
| HI Seating and Upholstery Ltd | Manufacturing | 2020 |
| HI T Nails Bar Limited | Other services | 2025 |
| HI T Property Limited | Real estate | 2025 |
| Hi-Bar Consultancy Ltd | Education | 2023 |
| Hi-Deck Ltd | Construction | 2019 |
| Hi-Fi Properties Ltd | Real estate | 2021 |
| Hi-Life Entertainment Ltd | Arts & recreation | 2015 |
| Hi-Tech Alarms Limited | Manufacturing | 2008 |
| Hiba Fashion & Beauty Ltd | Wholesale & retail | 2016 |
| Hibba Toys (UK) Limited | Wholesale & retail | 2003 |
| Hibret Ethiopian Community CIC | Other services | 2026 |
| HIC HOP Limited | Wholesale & retail | 2020 |
| Hicel Limited | Information & communication | 1993 |
| Hick Lane Bedding Limited | Manufacturing | 1982 |
| Hick's Plumbing Contractors Ltd | Construction | 2024 |