| Gurnard Capital Partners Limited | Financial services | 2025 |
| Gurucool Ltd | Real estate | 2016 |
| GUY Compson Surveying Limited | Professional & scientific | 2023 |
| GUY Fallows Enterprises Limited | Professional & scientific | 2002 |
| GW Utilities Limited | Construction | 2011 |
| GWB Recovery Ltd | Transport & logistics | 2024 |
| Gym Mezze Ltd | Hospitality | 2023 |
| Gym Online Limited | Arts & recreation | 2003 |
| Gynaecology Ultrasound Centre Limited | Health & social care | 1997 |
| H & G Property Services Limited | Construction | 2010 |
| H G Psychology Consultancy Ltd | Education | 2022 |
| H of Epsom Limited | Hospitality | 2023 |
| H&E Store Ltd | Wholesale & retail | 2025 |
| H&F Retail Pro Ltd | Wholesale & retail | 2023 |
| H&G Lettings and Developments Ltd | Real estate | 2026 |
| H&Pa Roberts Limited | Professional & scientific | 2015 |
| H. Shah & Co. Accountants Limited | Professional & scientific | 2019 |
| H.N.F. Limited | Extraterritorial | 2012 |
| H2AU Ltd | Professional & scientific | 2022 |
| H2O Vision Limited | Wholesale & retail | 2022 |
| Hadenmade Limited | Construction | 1985 |
| Hafez Healthcare Ltd | Wholesale & retail | 2023 |
| Haibbus Group Ltd | Real estate | 2020 |
| Hair by Allie Ltd | Other services | 2025 |
| Hair in Place Limited | Other services | 2010 |
| Halbolly Ltd | Public administration | 2023 |
| Hale Farm Dressage LLP | | 2016 |
| Hale Search Ltd | Administrative & support | 2021 |
| Halima Faqri Consulting Ltd | Professional & scientific | 2026 |
| Hallin Group Limited | Real estate | 2024 |
| Hallo DEV Ltd | Information & communication | 2026 |
| Hallo Digital Ltd | Professional & scientific | 2021 |
| Hallybolly Limited | Real estate | 2024 |
| HAM14TON'S Limited | Hospitality | 2016 |
| Hambledon Land (Stoke Mandeville) Ltd | Construction | 2017 |
| Hambledon Land Limited | Real estate | 2012 |
| Hamblin Limited | Financial services | 2017 |
| Hambro Ltd | Professional & scientific | 2013 |
| Hamdan Management Ltd | Administrative & support | 2020 |
| Hamid&Tahir Limited | Information & communication | 2010 |
| Hamilton Gate Limited | Administrative & support | 2013 |
| Hamilton House Capital Limited | Financial services | 2025 |
| Hamilton House Management (Camberley) Limited | Households | 2013 |
| Hampfield Ltd | Professional & scientific | 2015 |
| Hampfield Ventures Ltd | Financial services | 2018 |
| Hampton Headway Solutions Ltd | Professional & scientific | 2016 |
| Hampton Lodge RTM Company Limited | Real estate | 2023 |
| HAN Shop Ltd | Wholesale & retail | 2022 |
| Hana Blossom Limited | Wholesale & retail | 2025 |
| Hancock, Corfield and Waller Limited | Wholesale & retail | 1978 |
| Handberg Developments Limited | Construction | 2025 |
| Handicraft in Limited | Wholesale & retail | 2024 |
| Handy Service Solutions Limited | Other services | 2009 |
| Handy Stoyan Ltd | Construction | 2026 |
| Hanedan Meze Bar Ltd. | Hospitality | 2016 |
| Hannah Court Residents Association Limited | Households | 2004 |
| Hannah Estelle Ltd | Other services | 2023 |
| Hannah Green PR Limited | Professional & scientific | 2024 |
| Hannelius Recruitment Limited | Administrative & support | 2013 |
| Hannibal the Cannibal Limited | Extraterritorial | 2012 |
| Hanolin Ltd. | Information & communication | 2014 |
| Hans Lodge Management Limited | Professional & scientific | 1997 |
| Haohua Ltd | Hospitality | 2024 |
| Happenstance Research Limited | Professional & scientific | 2021 |
| Happy Offices Limited | Professional & scientific | 2025 |
| Happy Shitake Limited | Construction | 2022 |
| Happy to Help Property Services Ltd | Construction | 2019 |
| HAPPY1969 Limited | Financial services | 2026 |
| Happytag Ltd | Wholesale & retail | 2024 |
| Harbour Club Management (Eastbourne) Ltd | Households | 2021 |
| Hardwick Medical Services Ltd | Health & social care | 2019 |
| Hardy Clifton Ltd | Professional & scientific | 2025 |
| Hardy Engineering Transmissions Limited | Wholesale & retail | 2009 |
| Hare Krishna Epsom Ltd | Education | 2019 |
| Harepath (Wimbledon) LLP | | 2019 |
| Harepath Cree Studios Limited | Real estate | 2025 |
| Harepath ELM Grove Limited | Real estate | 2025 |
| Harepath Estates LLP | | 2006 |
| Harepath Limited | Real estate | 2023 |
| Harepath Richmond LLP | | 2025 |
| Harepath SW19 Limited | Construction | 2016 |
| Hareram Brighton Ltd | Hospitality | 2024 |
| Hareram Elegance Ltd | Other services | 2025 |
| Hareram Epsom Ltd | Wholesale & retail | 2024 |
| Hareram Ltd | Wholesale & retail | 2022 |
| Harestone Consulting Limited | Professional & scientific | 2024 |
| Harewood Road Property Management Ltd | Real estate | 2025 |
| Harlie Ltd | Real estate | 2020 |
| Harlyn Holdings Ltd | Real estate | 2019 |
| Harmony Habitat Limited | Real estate | 2024 |
| Harmony Health Partners Limited | Other services | 2021 |
| Harpor Group Limited | Transport & logistics | 2023 |
| Harriet Benton Limited | Administrative & support | 2010 |
| Harrington Homecare Ltd | Health & social care | 2022 |
| Harringtons Corporate Lettings Limited | Real estate | 2016 |
| Harrison Williams Windows Ltd | Construction | 2021 |
| Harrisonkt Limited | Professional & scientific | 2018 |
| Harry Marcus Ltd | Information & communication | 2007 |
| Harsh.Purne Limited | Wholesale & retail | 2026 |
| Hart Corporate Ltd | Information & communication | 2026 |