| Gusco Ltd | Information & communication | 2016 |
| Gwenny and Co International Ltd | Administrative & support | 2023 |
| Gym Finance Group Ltd | Administrative & support | 2011 |
| H & a Mcgregor Group Ltd | Financial services | 2024 |
| H & M Murally Limited | Health & social care | 2011 |
| H & O Group Ltd | Real estate | 2024 |
| H K M Design Limited | Professional & scientific | 2003 |
| H&B Electrical Services Ltd | Construction | 2013 |
| H&H Housing Developments Ltd | Real estate | 2023 |
| H&Jmd Consultants Ltd | Information & communication | 2010 |
| H.A.T. Limited | Manufacturing | 1999 |
| H2S Capital Limited | Real estate | 2022 |
| Hadassah's Kitchen Ltd | Hospitality | 2025 |
| Hair by Incognito Limited | Other services | 2013 |
| Hair by Poppytye Ltd | Other services | 2026 |
| Hair Candy (Newcastle) Ltd | Other services | 2025 |
| Hajco 205 Limited | Hospitality | 1999 |
| Hajco 380 Limited | Professional & scientific | 2008 |
| Hakan Computers Ltd | Other services | 2020 |
| Hakan Karakaya Limited | Transport & logistics | 2026 |
| Halatiba Logistics Limited | Transport & logistics | 2025 |
| Halfern Limited | Construction | 1999 |
| Hall Rental Property Limited | Extraterritorial | 2022 |
| Hallcalm (U.K.) Limited | Wholesale & retail | 1989 |
| Halls Corps Limited | Wholesale & retail | 2021 |
| Halo ALL Surface Cleaning Limited | Administrative & support | 2000 |
| Halo Consultancy Limited | Real estate | 2005 |
| Halstone Technology Limited | Information & communication | 2010 |
| Hamill Harty Ltd | Administrative & support | 2023 |
| Hammond Group Holdings Limited | Professional & scientific | 2012 |
| Hammond Surveyors LLP | | 2012 |
| Hampton and Astley Limited | Wholesale & retail | 2017 |
| Handy Housing Ltd | Real estate | 2024 |
| Hanley Glass & Windows Limited | Construction | 2005 |
| Hanna Medical Ltd | Administrative & support | 2026 |
| Hanpack Global Ltd | Wholesale & retail | 2023 |
| Happro Limited | Wholesale & retail | 2008 |
| Happy Feet Wolstanton Ltd | Health & social care | 2025 |
| Happy Homes Rental Limited | Real estate | 2022 |
| Harbinson Hair Ltd | Other services | 2018 |
| Hardy Interiors Limited | Professional & scientific | 2011 |
| Harley Narwhal Ltd | Wholesale & retail | 2023 |
| Harley Skin and Laser Ltd | Health & social care | 2011 |
| Harley Street Foot and Ankle Centre Limited | Health & social care | 2024 |
| Harley Street Therapy Centre Limited | Hospitality | 2008 |
| Harley Technologies Ltd | Wholesale & retail | 2020 |
| Harmony (NW) Limited | Professional & scientific | 2009 |
| Harper Advisors Limited | Administrative & support | 2021 |
| Harris Business Development Ltd | Extraterritorial | 2021 |
| Harris Property Rentals Limited | Real estate | 2021 |
| Harrison Interiors Ltd | Administrative & support | 2002 |
| Harrison Vehicle Repairs Ltd | Wholesale & retail | 2025 |
| Harry Millward (Plasterers) Limited | Construction | 1989 |
| Harry Turnbull Ltd | Manufacturing | 2022 |
| Hartel Limited | Information & communication | 2012 |
| Harvin Global Ltd | Wholesale & retail | 2021 |
| Hashim Radiology Limited | Health & social care | 2019 |
| Hassell House Rooms Limited | Wholesale & retail | 2025 |
| HAT International Limited | Manufacturing | 1998 |
| Hattersley Financial Planning Ltd | Professional & scientific | 2025 |
| Hattitude Limited | Wholesale & retail | 2001 |
| Haven Care Services (Staffordshire) Limited | Professional & scientific | 2010 |
| Hawkins Electrical Contracts Ltd | Construction | 2026 |
| Hayley Medical Limited | Health & social care | 2023 |
| Haylor Hair Limited | Other services | 2016 |
| Hazel Finance Ltd | Financial services | 2025 |
| Hazel Holdings Limited | Financial services | 2025 |
| Hazelton Construction Limited | Construction | 2010 |
| HCS Consultancy Ltd | Professional & scientific | 2014 |
| HD & LD Properties Limited | Real estate | 2012 |
| HD Cosmetics Ltd | Wholesale & retail | 2018 |
| Health Psychology Consultancy Ltd. | Information & communication | 2011 |
| Healus Limited | Professional & scientific | 2005 |
| Heart & Harmony CIC | Health & social care | 2025 |
| Heat Safe GAS Services Ltd | Energy | 2014 |
| Heataction Communities CIC | Professional & scientific | 2026 |
| Heath Protofab Limited | Manufacturing | 2018 |
| Heather Callaway Limited | Professional & scientific | 2014 |
| Heatlink Solutions Ltd | Construction | 2024 |
| Hecate Staffing Solutions Ltd | Administrative & support | 2022 |
| HEE Solutions Limited | Information & communication | 2012 |
| Height Engineering Services Ltd | Manufacturing | 2014 |
| Heisei Ltd | Information & communication | 2019 |
| Helen T Fawehinmi Technical Consultancy Limited | Professional & scientific | 2012 |
| Helen's for Flowers Ltd | Wholesale & retail | 2003 |
| Helping Hands Care Agency Limited | Health & social care | 2015 |
| Hemck Ltd | Professional & scientific | 2025 |
| Hencie Homes Ltd | Construction | 2021 |
| Henvia Limited | Real estate | 2025 |
| Hepher Electrical Services Ltd | Construction | 2006 |
| Heqlas Care Ltd | Health & social care | 2021 |
| Heritage Leisure Designs Limited | Wholesale & retail | 2000 |
| Heritage Park Freehold Block U Limited | Other services | 2012 |
| Hero WWW Ltd | Wholesale & retail | 2026 |
| Herrons Country Fried Chicken Ltd | Hospitality | 1999 |
| Hexagon Accountants (Staffordshire) Limited | Extraterritorial | 2008 |
| HF Investments Holdings Ltd | Financial services | 2025 |
| HFH Ltd | Hospitality | 2026 |
| Hfrdsys Consultancy Group Limited | Professional & scientific | 2024 |
| HHH Consultancy Limited | Transport & logistics | 2022 |