| Howed Ltd | Education | 2025 |
| Hoxha Limited | Construction | 2016 |
| HP Construction Private Ltd | Construction | 2023 |
| HP Consultants London Ltd | Construction | 2022 |
| HQ Health Professionals Limited | Health & social care | 2014 |
| HQ26 Investment Ltd | Real estate | 2025 |
| HR Motors and Repair Center Ltd | Wholesale & retail | 2020 |
| Hr&Tr Construction Ltd | Construction | 2024 |
| Hr-Contractorsuk Ltd | Construction | 2022 |
| HRA Construction & Electrics Ltd | Construction | 2025 |
| HRC Homes Ltd | Real estate | 2025 |
| Hrdf Metal Limited | Construction | 2025 |
| Hristov Ventures Ltd | Construction | 2026 |
| Hrmt Properties Limited | Real estate | 2019 |
| HS Sangha Constructions Limited | Construction | 2019 |
| Hs&S Limited | Real estate | 2018 |
| HSB Delivery Ltd | Transport & logistics | 2024 |
| HSD Construction Ltd | Construction | 2018 |
| HSM Estate Holding Ltd | Real estate | 2023 |
| HSP Construction Ltd | Construction | 2018 |
| HSS Builders Ltd | Construction | 2023 |
| Huckfield Flooring Limited | Construction | 2019 |
| Huda Hair Extension Limited | Wholesale & retail | 2019 |
| Hugeanu Limited | Construction | 2018 |
| Hugh Homes Limited | Real estate | 2019 |
| Humble J’S Ltd | Hospitality | 2026 |
| Hummiboutique Ltd | Wholesale & retail | 2019 |
| Humoglobal Resources UK Limited | Health & social care | 2019 |
| Hungry for Culture Merchandising Ltd | Wholesale & retail | 2025 |
| Hunnid Squared Hours Sounds Ltd | Arts & recreation | 2024 |
| Hunters Contracts (Holdings) Limited | Financial services | 2016 |
| Hunters Contracts Limited | Administrative & support | 1990 |
| Hunters Contracts Trustee Limited | Extraterritorial | 2025 |
| HUQ Traders Ltd | Wholesale & retail | 2023 |
| HUR Enterprise Ltd | Wholesale & retail | 2018 |
| Hurricane Civils Ltd | Construction | 2023 |
| Hurry Construction Ltd | Manufacturing | 2019 |
| HUS Collections Limited | Wholesale & retail | 2025 |
| Husain Constructions Ltd | Construction | 2025 |
| Huss&Co Ltd | Real estate | 2024 |
| Hussain Housings Limited | Real estate | 2026 |
| Hustine's UK Limited | Hospitality | 2012 |
| Huzur Limited | Hospitality | 2017 |
| HV Construction Group Ltd | Construction | 2022 |
| HWT Energy Limited | Wholesale & retail | 2021 |
| HXR Essentials Ltd | Wholesale & retail | 2017 |
| Hybrid Autos Limited | Wholesale & retail | 2019 |
| Hydraulic Technologies England Limited | Manufacturing | 2019 |
| Hydraulic UK Holdings Ltd | Financial services | 2023 |
| Hydrus Digital Group Limited | Financial services | 2021 |
| Hydrus Live Ltd | Information & communication | 2019 |
| Hydrus Music Publishing Limited | Information & communication | 2021 |
| Hygiene Foods Ltd | Hospitality | 2025 |
| Hykaj Builders Ltd | Construction | 2022 |
| Hynton Associates Ltd | Professional & scientific | 2021 |
| Hyper Executive Travel Ltd | Transport & logistics | 2025 |
| Hyperglow Ltd | Wholesale & retail | 2025 |
| HYT UK Holdings Ltd | Financial services | 2024 |
| HZ Group Ltd | Information & communication | 2025 |
| HZN Construction Ltd | Construction | 2016 |
| Hztrade Ltd | Wholesale & retail | 2025 |
| I & a Motors Ltd | Wholesale & retail | 2017 |
| I & T Motors UK Limited | Wholesale & retail | 2021 |
| I & V Properties Ltd | Real estate | 2020 |
| I AM Authentic Caribbean Catering Ltd | Hospitality | 2026 |
| I AM Gardening Team Ltd | Administrative & support | 2021 |
| I AM HER FWM CIC | Manufacturing | 2025 |
| I C Greatness Arts Advocacy Ltd | Administrative & support | 2020 |
| I FIX CWS Limited | Construction | 2025 |
| I J Solutions Limited | Information & communication | 2014 |
| I Smile Jesus Loves ME Ltd | Other services | 2024 |
| I T Clouds Enterprise Ltd | Professional & scientific | 2018 |
| I&D Building Solutions Ltd. | Construction | 2011 |
| I&G 1115 Ltd | Construction | 2021 |
| I&K Magic Ltd | Administrative & support | 2017 |
| I.C. Drylining Ltd | Construction | 2014 |
| I.Chime Limited | Construction | 2014 |
| I.D. Morris Ltd | Wholesale & retail | 2014 |
| I.P Decorators Limited | Construction | 2020 |
| I.S Tech Support Limited | Information & communication | 2026 |
| I.S.A Group Ltd | Administrative & support | 2018 |
| I.T Housing Ltd | Real estate | 2026 |
| I.V.S Electrical Ltd | Construction | 2017 |
| IA Computers & Services Limited | Information & communication | 2007 |
| IAG 18 Ltd | Construction | 2019 |
| IB Property Works Ltd | Manufacturing | 2023 |
| Ibadan Varsity Christian Union Alumni Fellowship UK Ltd | Other services | 2020 |
| Iball Swing Trainer Ltd | Manufacturing | 2025 |
| Ibbies Limited | Hospitality | 2017 |
| Ibby Baby Ltd | Wholesale & retail | 2018 |
| IBD Consulting Services Limited | Health & social care | 2025 |
| Ibex Global Education Limited | Administrative & support | 2025 |
| IBF DRY Lining Ltd | Construction | 2020 |
| Ibikunle Dashur Ltd | Arts & recreation | 2025 |
| Ibrahim Halal Meat Heathway Ltd | Wholesale & retail | 2023 |
| Ichim Ltd | Construction | 2020 |
| Ichim Transport Logistic Ltd | Transport & logistics | 2024 |
| Icomm Horizon Limited | Wholesale & retail | 2017 |
| Icon Five UK Ltd | Real estate | 2023 |
| Icon Star Security Ltd | Administrative & support | 2025 |