| Guerilla Labs Ltd | Information & communication | 2021 |
| Guild Business Solutions Limited | Administrative & support | 2016 |
| Guildford Hockey Club (Trading) Ltd | Arts & recreation | 2025 |
| Guildford Hockey Club Limited | Arts & recreation | 1994 |
| GW 217 Limited | Financial services | 2005 |
| GWB Advisory Limited | Professional & scientific | 2023 |
| Gwynne Court Freehold Limited | Real estate | 2007 |
| Gynae Consulting Ltd | Health & social care | 2024 |
| GZ Renovations Limited | Construction | 2023 |
| H R Interior Designs Ltd | Professional & scientific | 2023 |
| H Sahota Ltd | Information & communication | 2015 |
| H. Blairman & Sons Limited | Wholesale & retail | 1969 |
| H. F. Investments Limited | Extraterritorial | 1985 |
| Hadley Engineering Limited | Construction | 2021 |
| Hadrian Court (Stanley Road) Management Limited | Real estate | 2007 |
| Haines Minicoaches Limited | Transport & logistics | 2005 |
| Halcyon Offices Limited | Real estate | 2002 |
| Haling Park Road BTL Ltd | Real estate | 2025 |
| Hallmark Construction Surrey Limited | Construction | 2017 |
| Hallmark Development Surrey Ltd | Construction | 2024 |
| Halogen Marketing Group Ltd | Wholesale & retail | 2019 |
| Hambledon Residents Association Limited | Households | 1995 |
| Hamilton Accountancy Services Limited | Professional & scientific | 2026 |
| Hamilton Wilson Ltd | Administrative & support | 2024 |
| Hampstead Road Residents Management Limited | Real estate | 1986 |
| Hampton Court Mews Management Company Limited | Households | 2005 |
| Hampton View Ltd | Real estate | 2023 |
| HAN Kitchen Ltd | Wholesale & retail | 2024 |
| Handy Warhol Limited | Construction | 2016 |
| Happy Child International | Health & social care | 2006 |
| Hard OUT Ltd | Information & communication | 2026 |
| Harewood Properties Limited | Real estate | 2020 |
| Harkness Coaching Ltd | Education | 2014 |
| Harlech PPM Limited | Wholesale & retail | 2016 |
| Harley Data Works Ltd | Information & communication | 2024 |
| Harmonic Limited | Information & communication | 2003 |
| Harrington House RTM Company Limited | Households | 2023 |
| Harris and Home Ltd | Wholesale & retail | 2025 |
| Harrod Booth Consulting Limited | Professional & scientific | 2003 |
| Harrow Strategic Development Partnership LLP | | 2021 |
| Harrt Investments Limited | Real estate | 2026 |
| Hartfield Consulting Limited | Professional & scientific | 2025 |
| Harvefilms Limited | Information & communication | 2019 |
| Harvest Media (UK) Limited | Information & communication | 2012 |
| Hausdin Ltd | Construction | 2024 |
| Havering and Wates Regeneration LLP | | 2018 |
| Hawkdyne Limited | Other services | 1991 |
| Hawks Hill Close (Fetcham) Management Company Ltd | Households | 2012 |
| Hawkshill Limited | Financial services | 2023 |
| Hawkwood House Limited | Households | 1989 |
| Hayle Harbour Authority Operations Limited | Administrative & support | 2015 |
| Hayle North Quay Management Ltd | Real estate | 2019 |
| Hazelway Close Management Company Limited | Households | 2004 |
| Hazlewell Consultants Limited | Professional & scientific | 2016 |
| HBT Digital Advisory Limited | Professional & scientific | 2023 |
| Hchv Management Company Limited | Households | 2024 |
| HDN Roofing Ltd | Construction | 2021 |
| Headley Fisheries Limited | Transport & logistics | 2002 |
| Heads 1 Barbers Ltd | Other services | 2025 |
| Headtracker Ltd | Wholesale & retail | 2023 |
| Healing Hearts and Minds With Horses C.I.C. | Education | 2020 |
| Health-Pursuits Limited | Wholesale & retail | 2016 |
| Healthy Happy ME! Ltd | Health & social care | 2016 |
| Heath View,East Horsley,(Frontagers)Limited | Households | 1958 |
| Heathcote Securities Limited | Hospitality | 1990 |
| Heather (Guildford) Management Limited | Households | 1990 |
| Hedgehog Recruitment Services Ltd | Administrative & support | 2016 |
| Hedgerows (Ewhurst) Management Company Ltd | Households | 2026 |
| Hedleys Nominees Limited | Professional & scientific | 1988 |
| Hedox Ltd | Other services | 2017 |
| Heidian Developments Limited | Construction | 2013 |
| Helen Morrell Productions Ltd. | Information & communication | 2015 |
| Helen Murray Psychotherapy Limited | Health & social care | 2011 |
| Helen Walker Coaching Limited | Administrative & support | 2013 |
| Helios Land Limited | Real estate | 2024 |
| Helpnest Management Limited | Other services | 2026 |
| Hengo Holdings Limited | Construction | 2011 |
| Henley Court Properties Limited | Households | 1996 |
| Henley Living Limited | Real estate | 2020 |
| Henrose Limited | Financial services | 2019 |
| HER Fitness Collective Limited | Other services | 2025 |
| Hera Nutri Ltd | Manufacturing | 2026 |
| Hereafter Solutions Ltd | Information & communication | 2024 |
| Here’S to Makers Limited | Information & communication | 2025 |
| HES Estate Management Limited | Real estate | 2015 |
| HES Estate Services Limited | Real estate | 2018 |
| Hestia Care Homes Limited | Health & social care | 2020 |
| Hestia Care Limited | Health & social care | 1993 |
| Heworth Green a & C Management Limited | Real estate | 2025 |
| Heynalaworld Ltd | Information & communication | 2026 |
| Hiba Allied Limited | Wholesale & retail | 2018 |
| Hibbs Consultancy Limited | Professional & scientific | 2019 |
| Hibbs Management Ltd | Professional & scientific | 2024 |
| Hickson's Heating Ltd | Construction | 2024 |
| Higgs Design and Project Management Limited | Professional & scientific | 1998 |
| High Acre Close Management Company Limited | Households | 2018 |
| High Barn Holdings Limited | Financial services | 2023 |
| High on Hair Ltd | Other services | 2025 |
| High Park Avenue Residents' Association Limited(The) | Administrative & support | 1965 |
| High Ridge Court (Epsom) Limited | Households | 1969 |