| Greenland Properties Limited | Real estate | 2014 |
| Greenscapes Garden Centre Ltd | Wholesale & retail | 2025 |
| Gregory Consulting Limited | Professional & scientific | 2023 |
| Ground by Coco Limited | Administrative & support | 2021 |
| Ground Cuckfield Ltd | Hospitality | 2025 |
| Ground in the Park Ltd | Hospitality | 2023 |
| Grownit Ltd | Agriculture & fishing | 2022 |
| GS Admin & Consultancy Ltd | Professional & scientific | 2024 |
| GS Driver Training Ltd | Education | 2025 |
| GTH Construction Supplies Ltd | Extraterritorial | 2014 |
| Guildford Consolidated Investments Ltd | Professional & scientific | 2011 |
| Guildford Healing Centre LLP | | 2024 |
| Guildford Tipper Hire Limited | Wholesale & retail | 2002 |
| GUY Partnership LLP | | 2021 |
| Güayabita Limited | Wholesale & retail | 2024 |
| H B Rigging Ltd | Information & communication | 2023 |
| H-Power PLC | Professional & scientific | 2006 |
| H-Power Services Limited | Professional & scientific | 2025 |
| H. Freemantle Limited | Transport & logistics | 1949 |
| Halo Heating South Ltd | Extraterritorial | 2024 |
| Hamlet Building and Bricklaying Ltd | Construction | 2019 |
| Hampton Services Limited | Professional & scientific | 1983 |
| Hannah Davies Solutions Ltd | Professional & scientific | 2025 |
| Happyfish LU Limited | Wholesale & retail | 2026 |
| Harewood Consultancy Limited | Professional & scientific | 2012 |
| Harpham Health & Wellness Ltd | Health & social care | 2019 |
| Harris & Shepherd Properties Limited | Real estate | 2020 |
| Harris&Shepherd Plumbing&Heating Solutions Limited | Construction | 2017 |
| HAW Projects Ltd | Construction | 2015 |
| Haybarn Cottages Alfold | Households | 2016 |
| Haydon Electrical and Building Services Ltd | Construction | 2017 |
| Headhunters Consulting Ltd | Administrative & support | 2021 |
| Heavestow Limited | Construction | 1979 |
| Helen Clifford Law Limited | Professional & scientific | 2018 |
| Hemco Properties Ltd | Real estate | 2025 |
| Henop Holdings Limited | Financial services | 2024 |
| Henrys Opinion Ltd | Wholesale & retail | 2010 |
| Hermanus Consulting Limited | Professional & scientific | 2025 |
| Hestia Home Finders Limited | Real estate | 2018 |
| Hestia Property Professionals Limited | Real estate | 2018 |
| HHH Lettings Ltd | Real estate | 2023 |
| Hidden Well Estates Limited | Real estate | 2018 |
| High Pastures Ltd | Real estate | 2011 |
| HJS Groundworks Limited | Construction | 2022 |
| HKA Design Limited | Manufacturing | 2020 |
| Hldr Tools Ltd | Manufacturing | 2026 |
| HNW P1 Limited | Professional & scientific | 2010 |
| Hoad & Taylor Holdings Limited | Professional & scientific | 2023 |
| Hoad & Taylor Limited | Administrative & support | 1985 |
| Holdhurst Farm Limited | Agriculture & fishing | 2010 |
| Holly House Freehold Ltd | Households | 2020 |
| Home Support Services (Guildford) C.I.C. | Health & social care | 2005 |
| Homesparkling Limited | Administrative & support | 2014 |
| Honeywood Carpentry & Joinery Limited | Construction | 2019 |
| Hopefulearl Ltd | Arts & recreation | 2010 |
| Hot Iron Productions Limited | Information & communication | 2006 |
| Hot Yoga Tribe Ltd | Arts & recreation | 2023 |
| House Property Partnership Limited | Real estate | 2015 |
| Housekeeping Clean Limited | Administrative & support | 2018 |
| Howard Fletcher Limited | Professional & scientific | 2005 |
| Hunter Harvey Property Limited | Real estate | 2020 |
| Hunterswood Limited | Information & communication | 2017 |
| HV Development Ltd | Households | 2025 |
| Hyamtec Limited | Professional & scientific | 2024 |
| Hydro Turf Ltd | Administrative & support | 2011 |
| I AM JOE Ltd | Other services | 2020 |
| Iberia Interiors Ltd | Professional & scientific | 2026 |
| IC Global Business Solutions Ltd | Professional & scientific | 2025 |
| Icon Park Homes & Modular Buildings Limited | Construction | 2021 |
| Icoris Limited | Information & communication | 2013 |
| Idyllic Beauty & Day Spa Ltd | Other services | 2013 |
| Ikon Associates Limited | Administrative & support | 2000 |
| Imperium Energy Limited | Information & communication | 2010 |
| Imtiaz Ariana General Trading Ltd | Wholesale & retail | 2023 |
| Informed Choice Limited | Financial services | 1994 |
| Injection Stretch Blow Solutions Limited | Professional & scientific | 2012 |
| Innervision Training & Development Limited | Administrative & support | 2003 |
| Innox Electrical Ltd | Construction | 2014 |
| Innox Properties Ltd | Real estate | 2021 |
| Innox Sales Ltd | Wholesale & retail | 2020 |
| Inoxia Limited | Manufacturing | 2005 |
| Inside Outside Marquee Hire Ltd | Arts & recreation | 2010 |
| Insightful Growth Limited | Professional & scientific | 2015 |
| Inspro Ltd | Manufacturing | 2017 |
| Int-Marine Limited | Extraterritorial | 2005 |
| Intelligent Currency Solutions Limited | Financial services | 2008 |
| Interface Technologies Europe Ltd | Information & communication | 2005 |
| Internali Ltd | Real estate | 2025 |
| International Yacht Consulting Limited | Transport & logistics | 2000 |
| Inventors Trunk Limited | Administrative & support | 2010 |
| IT Support and Security Limited | Information & communication | 2000 |
| IV Global Investments Ltd | Professional & scientific | 2014 |
| IV My Interiors Ltd | Professional & scientific | 2014 |
| J a Renewables Ltd | Construction | 2013 |
| J C Geosciences Limited | Professional & scientific | 2024 |
| J C M Associates (Ewhurst) Limited | Administrative & support | 2007 |
| J H Garden Services Limited | Administrative & support | 2013 |
| J J Builder London Ltd | Construction | 2015 |
| J M Bespoke Landscapes Ltd. | Administrative & support | 2020 |
| J&A Housing Ltd | Real estate | 2025 |