| Heston Cars Ltd | Wholesale & retail | 2018 |
| Heston Convenience Store Ltd | Wholesale & retail | 2015 |
| Heston CUT Barbers Ltd | Other services | 2026 |
| Heston Development Limited | Real estate | 2019 |
| Heston Fireworks Ltd | Wholesale & retail | 2024 |
| Heston Recovery Limited | Wholesale & retail | 2026 |
| Heston Treatments Ltd | Other services | 2019 |
| Heston Tyres and Services Ltd | Wholesale & retail | 2017 |
| Heston Tyres Limited | Wholesale & retail | 2017 |
| Heston Wellness Centre Ltd | Other services | 2019 |
| Hestos Property Limited | Real estate | 2025 |
| Hexbro Ltd | Wholesale & retail | 2026 |
| Hexcube Technology Services Ltd | Information & communication | 2020 |
| Hexcube Technology Solutions Ltd | Information & communication | 2011 |
| Hexline Cars Ltd | Wholesale & retail | 2024 |
| Heystylish Limited | Wholesale & retail | 2015 |
| HFD Foods Ltd | Hospitality | 2024 |
| HG Property Management Limited | Households | 2017 |
| HGR and Sons Ltd | Transport & logistics | 2026 |
| HH Trading London Limited | Wholesale & retail | 2024 |
| Hhhe Services Ltd | Professional & scientific | 2015 |
| HI Pharm Limited | Health & social care | 2014 |
| HI Tech Properties 4 YOU Ltd | Real estate | 2021 |
| Hi-Profile Beauty Limited | Other services | 2017 |
| Hi-Profile Hair Limited | Other services | 2024 |
| Hi-Profile Jewels Limited | Manufacturing | 2024 |
| Hibah Desserts Limited | Hospitality | 2014 |
| Hibah Finest Foods Limited | Manufacturing | 2021 |
| Hibah Foods Europe Limited | Manufacturing | 2020 |
| Hicox Consultancy Services Limited | Professional & scientific | 2024 |
| Hiddengemsa Ltd | Wholesale & retail | 2025 |
| Hiden London Limited | Wholesale & retail | 2023 |
| Hifi Accessories UK Ltd | Wholesale & retail | 2021 |
| High Essentials Ltd | Wholesale & retail | 2022 |
| High Frost Ltd | Manufacturing | 2012 |
| High Grove Chauffeurs Limited | Transport & logistics | 2016 |
| High Rise Transport Limited | Transport & logistics | 2025 |
| High Tech Retail Ltd | Wholesale & retail | 2017 |
| High Wycombe Local Limited | Wholesale & retail | 2026 |
| Highcross (Slough) Management Limited | Real estate | 1992 |
| Highly Addicted Ltd | Wholesale & retail | 2025 |
| Highpoint Financial Services Limited | Financial services | 2018 |
| Highpoint Services Group Ltd | Information & communication | 2023 |
| Hiirad Ltd | Wholesale & retail | 2024 |
| Hikmah Advisory Ltd | Professional & scientific | 2026 |
| Hikmat Halal Meat (Wholesale) Ltd | Wholesale & retail | 2011 |
| Hikria Ltd | Wholesale & retail | 2023 |
| Hillroom Hospitality Limited | Hospitality | 2026 |
| Hilton Cars Kenton Ltd | Transport & logistics | 2015 |
| Himalaya JET Ltd | Transport & logistics | 2022 |
| Himmat Ghuman Ltd | Transport & logistics | 2025 |
| Hinda Hair and Beauty Academy Ltd | Transport & logistics | 2024 |
| Hindu Cultural Centre Ltd | Education | 2022 |
| Hire Airport Transfers Ltd | Transport & logistics | 2018 |
| Hiren Shah Limited | Information & communication | 2017 |
| HIS & Hers Beauty Salon Limited | Other services | 2014 |
| Hisar Construction Ltd | Construction | 2024 |
| Hishasini Ltd | Real estate | 2019 |
| Hitage Ltd | Wholesale & retail | 2025 |
| Hitchcorp Ltd | Other services | 2020 |
| Hithermoor Farm Holdings Ltd | Financial services | 2024 |
| Hitman Creative Ltd | Professional & scientific | 2019 |
| Hive Human Resources Ltd | Professional & scientific | 2025 |
| Hiyos Limited | Health & social care | 2020 |
| HJ Building Solutions Ltd | Construction | 2023 |
| HJR Communications Ltd | Wholesale & retail | 2017 |
| HJS Food & Wine Ltd | Wholesale & retail | 2026 |
| Hjtjh Properties Ltd | Real estate | 2022 |
| HK & SK Ltd | Hospitality | 2024 |
| HK Convenience Ltd | Wholesale & retail | 2019 |
| HK Design LAB Ltd | Professional & scientific | 2025 |
| HK Express Ltd | Wholesale & retail | 2026 |
| HK IT Services Ltd | Information & communication | 2023 |
| HK Machines Ltd | Manufacturing | 2015 |
| HK Real Holdings Ltd | Real estate | 2021 |
| HK Sapra Restaurant Limited | Manufacturing | 2021 |
| HK Star Logistics Ltd | Transport & logistics | 2025 |
| HK Top Ltd | Construction | 2025 |
| Hkgn Workforce Ltd | Administrative & support | 2025 |
| Hkhp Services Ltd | Professional & scientific | 2026 |
| HKT Limited | Wholesale & retail | 2017 |
| HL29 INV Limited | Real estate | 2025 |
| Hlxiv Ltd | Real estate | 2025 |
| HM Cosmatics Ltd | Wholesale & retail | 2025 |
| HM Restaurants Limited | Hospitality | 2019 |
| HMJ Superstore Ltd | Wholesale & retail | 2026 |
| HMO MO Ltd | Real estate | 2025 |
| HMR Capital Holdings Limited | Real estate | 2025 |
| Hmsb Enterprises Ltd | Wholesale & retail | 2018 |
| Hnspice Ltd | Wholesale & retail | 2021 |
| Hoffmannbro Ltd | Construction | 2013 |
| Holi Health Ltd | Health & social care | 2022 |
| Holiday Nails Ltd | Other services | 2023 |
| Holiday School Limited | Wholesale & retail | 2018 |
| Holidays Carnival Group Limited | Administrative & support | 2016 |
| Holidays Friend Limited | Administrative & support | 2018 |
| Holistic Well-Being Solutions Ltd | Health & social care | 2025 |
| Holy Group Limited | Wholesale & retail | 2012 |
| Holy Group Management Limited | Real estate | 2024 |
| Holy Logistics Limited | Transport & logistics | 2024 |