| GK Payne Ltd | Manufacturing | 2020 |
| Glass Worx Installations Ltd | Construction | 2019 |
| Glasscoast Limited | Professional & scientific | 1987 |
| Global Equine Consultant Services Limited | Professional & scientific | 2007 |
| Global Equine Group Limited | Professional & scientific | 2007 |
| Global Equine Property Ltd | Extraterritorial | 2012 |
| Global Equine Veterinary Services Limited | Professional & scientific | 2007 |
| Global Nurse Healthcare Ltd | Health & social care | 2019 |
| Global Research Services Limited | Professional & scientific | 2023 |
| Gloss 'N' Gardens Limited | Construction | 2017 |
| Gloss Hair & Beauty Ltd | Other services | 2023 |
| GM Project Solutions Ltd | Professional & scientific | 2025 |
| Go-Recruit Ltd | Administrative & support | 2024 |
| Goldenseal Limited | Construction | 2020 |
| Goldman Service Ltd | Construction | 2026 |
| Golf and Wine Limited | Administrative & support | 2018 |
| Golf Holiday Travel News Limited | Administrative & support | 2023 |
| Gooch Maloney & Company Limited | Professional & scientific | 2023 |
| Good Practice Safety Services Ltd | Construction | 2026 |
| Goodall Barnett James Ltd | Professional & scientific | 2019 |
| Goodfellas Autoz Ltd | Wholesale & retail | 2015 |
| Goose Aviation Services Ltd | Manufacturing | 2019 |
| GPM Associates Limited | Financial services | 2021 |
| GR Car and Commercial Limited | Wholesale & retail | 2004 |
| Graham Foote Property Services Limited | Real estate | 2018 |
| Grainger Burren Limited | Financial services | 2025 |
| Grainne Marmion Limited | Information & communication | 2011 |
| Grange Manor Maintenance Ltd | Households | 1989 |
| Granger Bespoke Builds Ltd | Construction | 2025 |
| Grant Covacic Limited | Information & communication | 2007 |
| Grays Building Solutions Ltd | Construction | 2016 |
| Grays Wood Gardens Management Limited | Households | 2010 |
| Grazing for Aldersbrook Horses Ltd | Other services | 2015 |
| Greaves & Graham Consulting Ltd | Administrative & support | 2014 |
| Greek Gyros Afroviti 2 Ltd | Hospitality | 2025 |
| Green Barn Parts Ltd | Wholesale & retail | 2024 |
| Green Roofers Limited | Construction | 2014 |
| Green Software Ltd | Information & communication | 2020 |
| Greenbarn SB Limited | Transport & logistics | 2023 |
| Greens Consulting Ltd | Professional & scientific | 2021 |
| Gretsch SW Limited | Professional & scientific | 2025 |
| Grey Square Limited | Wholesale & retail | 2022 |
| Greyhound Events Ltd | Wholesale & retail | 1999 |
| Greyhound Trust Trustee Limited | Other services | 2018 |
| Greyswood Residential Limited | Real estate | 2021 |
| Greywood Ventures Ltd | Professional & scientific | 2023 |
| Griffin & Black Associates Limited | Information & communication | 2005 |
| Griffon Housing Limited | Real estate | 2017 |
| Griho Properties Limited | Real estate | 2026 |
| Grill Wala Ltd | Hospitality | 2025 |
| Grosvenor Close Residents Association Limited | Households | 2003 |
| Groundworx (South East) Limited | Construction | 2025 |
| Grove Protein Ltd | Wholesale & retail | 2026 |
| Grovelands (Horley) Limited | Households | 2005 |
| GRUBER59 Limited | Administrative & support | 2019 |
| GS Superstore Limited | Wholesale & retail | 2023 |
| GSL Holdings Limited | Other services | 2015 |
| GSL Partners Limited | Administrative & support | 2011 |
| GSL Property Investment Limited | Real estate | 2015 |
| GSS Logistics Ltd | Transport & logistics | 2026 |
| Gtec Software Ltd | Wholesale & retail | 2025 |
| GUL & Co Accountancy Limited | Professional & scientific | 2009 |
| GW Compliance Limited | Construction | 2019 |
| GXH Barber Studio Limited | Real estate | 2020 |
| H & C Macintyre Associates Limited | Other services | 2017 |
| H Johns Properties Ltd | Real estate | 2025 |
| H.G. Scadgell Limited | Extraterritorial | 1933 |
| H.H.Loseby Ltd | Arts & recreation | 2026 |
| H2OSQD Ltd | Wholesale & retail | 2020 |
| Haabu Limited | Hospitality | 2025 |
| HAB Property & Developments Ltd | Construction | 2020 |
| Had’Z & MAC Communications Ltd | Wholesale & retail | 2021 |
| Haldexparts Limited | Wholesale & retail | 2014 |
| Hall Developments Hardwick Road Ltd | Construction | 2017 |
| Hallam and Middleton Limited | Manufacturing | 1947 |
| Halldata Limited | Information & communication | 1989 |
| Hallson Construction LLP | | 2018 |
| Hallson Homes (Bowerland Lane) Limited | Construction | 2024 |
| Hallson Homes (River Mill) Limited | Construction | 2021 |
| Hallson Homes (Wrays Farm) Limited | Construction | 2004 |
| Hallson Homes Limited | Construction | 2021 |
| Handleys Cafe Reigate Ltd | Hospitality | 2021 |
| Handleys CWB Limited | Hospitality | 2015 |
| Hangcl Yamai Limited | Wholesale & retail | 2025 |
| Hanid Associates Limited | Professional & scientific | 2019 |
| Hannah Smith Limited | Health & social care | 2023 |
| Harbor Neuroscience Ltd | Wholesale & retail | 2019 |
| Harley Street Consultants Ltd | Wholesale & retail | 2004 |
| Harley Street Pranic Clinic Ltd | Health & social care | 2022 |
| Harman Green Limited | Construction | 2025 |
| Harris Project Consulting Limited | Professional & scientific | 2013 |
| Harry Gibson Lighting and Vision Limited | Information & communication | 2013 |
| Harts Mead Management Company Limited | Households | 2020 |
| Hartshorn Properties Ltd | Real estate | 2024 |
| Havart Ltd | Professional & scientific | 2023 |
| Hawa Lettings Ltd | Real estate | 2023 |
| Hays Build Ltd | Construction | 2024 |
| Haywood Autos Ltd | Wholesale & retail | 2023 |
| Hazell Property Holdings Limited | Real estate | 2024 |
| HD Improvements Ltd | Construction | 2016 |