| GW Student Rentals Limited | Real estate | 2024 |
| Gwest Haven Ltd | Health & social care | 2024 |
| Gxflow Ltd | Transport & logistics | 2020 |
| Gym Jamieson Ltd | Wholesale & retail | 2023 |
| Gym Time Limited | Arts & recreation | 2009 |
| Gynaecology Ultrasound Training Ltd | Health & social care | 2019 |
| Gyrospoint Ltd | Hospitality | 2022 |
| GZF Properties Ltd | Real estate | 2022 |
| H & a Properties Ltd | Households | 2013 |
| H & a Support Services Ltd | Health & social care | 2020 |
| H & B Sparkling Limited | Administrative & support | 2025 |
| H & H Carpentry Contractors Limited | Construction | 2020 |
| H & H Derby Ltd | Hospitality | 2025 |
| H & J Bilan Properties Limited | Real estate | 2024 |
| H & R Services INT Ltd | Health & social care | 2015 |
| H a Barber Ltd | Other services | 2025 |
| H a R Midland Limited | Hospitality | 2021 |
| H and M Locums Ltd | Wholesale & retail | 2023 |
| H B Jones (Midlands) Limited | Construction | 1996 |
| H C Accountancy Limited | Professional & scientific | 2021 |
| H D S Properties (Derby) Limited | Real estate | 2002 |
| H Goodwin Consultancy Ltd | Professional & scientific | 2024 |
| H Hasan Enterprise Limited | Financial services | 2017 |
| H J Burton Accountants Limited | Professional & scientific | 2014 |
| H Justice Ltd | Construction | 2025 |
| H L Johnsen Limited | Financial services | 2016 |
| H Laser Ltd | Other services | 2024 |
| H M Christie Limited | Information & communication | 2022 |
| H R Sales Limited | Wholesale & retail | 2011 |
| H Rahman Holdings Ltd | Financial services | 2024 |
| H Rehman Healthcare Limited | Health & social care | 2015 |
| H S Plastering & Drylining Limited | Construction | 2002 |
| H Squared Properties Ltd | Real estate | 2019 |
| H Thorley & Sons Limited | Transport & logistics | 1996 |
| H&A Rentals Ltd | Real estate | 2015 |
| H&B Auto Servicing Limited | Wholesale & retail | 2026 |
| H&G Real Estate Ltd | Real estate | 2024 |
| H&H Healthcare Services (UK) Limited | Health & social care | 2013 |
| H&H Structures Ltd | Construction | 2026 |
| H&H United Ltd | Health & social care | 2022 |
| H&J Bros Transport Limited | Transport & logistics | 2019 |
| H&K BLISS4U Ltd | Wholesale & retail | 2024 |
| H&K Solutions Limited | Construction | 2018 |
| H&R Deaville Limited | Hospitality | 2013 |
| H&S Flooring (UK) Limited | Construction | 2015 |
| H&S Haulage Ltd | Transport & logistics | 2015 |
| H&S Ruparel Holdings Limited | Financial services | 2025 |
| H&S Ruparel Properties Limited | Real estate | 2023 |
| H&W Blossom Holdings Ltd | Construction | 2018 |
| H&W Nexus Ltd | Wholesale & retail | 2025 |
| H-Do 2 Ltd | Other services | 2021 |
| H. Tenenblat Limited | Wholesale & retail | 1979 |
| H. V. Bowen & Sons (Quarry) Ltd | Mining & quarrying | 2011 |
| H. V. Bowen & Sons (Transport) Limited | Extraterritorial | 1987 |
| H.C Collective Supplies Ltd | Wholesale & retail | 2026 |
| H.E.M Consultancy Limited | Professional & scientific | 2023 |
| H.Hunt & Sons(Builders)Limited | | 1959 |
| H.L Aesthetics Ltd | Other services | 2020 |
| H.U.B Velocity Transport Ltd | Transport & logistics | 2025 |
| H24 Consultancy Ltd | Professional & scientific | 2022 |
| H2A Transport Ltd | Transport & logistics | 2020 |
| H2O JET Washing Ltd | Administrative & support | 2023 |
| H2O Pumps Ltd | Wholesale & retail | 2024 |
| H3I Limited | Professional & scientific | 2006 |
| H3K Investment Properties Limited | Real estate | 2019 |
| H4 Incorporated Limited | Wholesale & retail | 2014 |
| HAA Transport Ltd | Transport & logistics | 2025 |
| Haas Group International SCM Limited | Wholesale & retail | 1998 |
| Haas TCM Group of the UK Limited | Wholesale & retail | 2006 |
| HAB Outlet Ltd | Wholesale & retail | 2022 |
| Habbat Aloud Ltd | Wholesale & retail | 2025 |
| Habibmi Limited | Professional & scientific | 2024 |
| Habibty Beauty Limited | Wholesale & retail | 2025 |
| Habitat Real Estate Ltd | Real estate | 2025 |
| Habitat Solutions (Melton) Ltd | Real estate | 2024 |
| Habitoria Properties Ltd | Real estate | 2026 |
| Hackwood Management Company Limited | Households | 2018 |
| Hackwood Plastering Ltd | Construction | 2025 |
| Hadham AGA Services Limited | Other services | 2016 |
| Hadil Urban Nest Limited | Real estate | 2025 |
| Hady Builders Ltd | Construction | 2019 |
| Haematology Medical Services Limited | Professional & scientific | 2010 |
| HAF Consultants Limited | Households | 2024 |
| Hafiza.Hafiz Ahmad Ltd | Health & social care | 2026 |
| Haggar&Sons Ltd | Wholesale & retail | 2026 |
| Hague Audio Ltd | Manufacturing | 2011 |
| Haider Retail UK Ltd | Wholesale & retail | 2024 |
| Haileyrhino Ltd | Information & communication | 2022 |
| Hair & Aesthetics Ltd | Other services | 2025 |
| Hair by Grena Ltd | Other services | 2022 |
| Hair Loss Studio Ltd | Other services | 2023 |
| Hair Plus Academy Ltd | Wholesale & retail | 2024 |
| Hair Products Direct Ltd | Extraterritorial | 2011 |
| Hair Revive Derby Ltd | Other services | 2025 |
| Haircut 56 Limited | Other services | 2014 |
| Hairpro Trichology Ltd | Other services | 2023 |
| Hairy Dog Venue Ltd | Hospitality | 2026 |
| HAK Fast Food Limited | Hospitality | 2017 |
| HAK Global Solutions Ltd | Construction | 2025 |
| Haka Engineering Ltd | Manufacturing | 2024 |