| Freya Entertainment Ltd | Hospitality | 2025 |
| Frith Dimension Ltd | Wholesale & retail | 2019 |
| Fritham Homes Limited | Construction | 2015 |
| Frontcentral Property Management Limited | Households | 1988 |
| Frontier Images Limited | Information & communication | 1991 |
| Frontline Human Ltd | Education | 2021 |
| Frontmore Limited | Real estate | 1990 |
| Frozenplain Ltd | Information & communication | 2021 |
| Fuel Flow Technologies Limited | Wholesale & retail | 2019 |
| Fuller Fabrications Limited | Manufacturing | 2014 |
| Functional & Spine Limited | Health & social care | 2014 |
| Funkadelic Limited | Health & social care | 2018 |
| Futurearb Ltd | Administrative & support | 2018 |
| Futwiz Ltd | Information & communication | 2021 |
| FWA Solutions Limited | Financial services | 2012 |
| Fxmc Ltd | Professional & scientific | 2025 |
| G a R Training Services Limited | Professional & scientific | 2014 |
| G Birchill Limited | Information & communication | 2024 |
| G Burnett Joinery Ltd | Construction | 2009 |
| G Hope Holdings Ltd | Real estate | 2026 |
| G J Brewer Farm Services Limited | Professional & scientific | 2017 |
| G&G Cars Ltd | Wholesale & retail | 2021 |
| G-Mec Fabrication Limited | Manufacturing | 2005 |
| G.And P.Cases Limited | Manufacturing | 1969 |
| Galahad Defence Consultancy Limited | Professional & scientific | 2024 |
| Gama Design Holdings Limited | Financial services | 2026 |
| Garrett Orthopaedic Clinical Services Ltd | Health & social care | 2022 |
| Garrett Orthopaedic Services LLP | | 2026 |
| Gary Borland Limited | Professional & scientific | 2016 |
| GAS Safety Audit-Servicing Ltd | Construction | 2025 |
| GAS SAS Ltd | Other services | 2026 |
| Gateway Central Services Limited | Education | 2011 |
| Gateway Leisure Limited | Administrative & support | 1986 |
| Gateway Multi Academy Trust | Education | 2011 |
| Gats Investments Ltd | Real estate | 2021 |
| Gazings (Management) Limited(The) | Households | 1976 |
| GBD Ductwork Ltd | Construction | 2019 |
| GCG Healthcare Limited | Professional & scientific | 1996 |
| GD Builders Limited | Construction | 2021 |
| GD Jones Limited | Health & social care | 2013 |
| Gecko Animation Limited | Administrative & support | 2007 |
| GEM Business Solutions Ltd | Professional & scientific | 2022 |
| Geoff Rouse Limited | Financial services | 2015 |
| Geollect Limited | Information & communication | 2017 |
| George Dillon Only a Dream Away CIC | Health & social care | 2023 |
| Georgetheeditor Limited | Information & communication | 2022 |
| Geosed Limited | Professional & scientific | 2000 |
| Gerann Limited | | 1985 |
| Gerry's Contracting Services Limited | Transport & logistics | 2015 |
| Geyer Electronic UK Limited | Manufacturing | 2012 |
| GF Engineering (Romsey) Limited | Professional & scientific | 2020 |
| GG Experiences Ltd | Information & communication | 2018 |
| GG Gastroenterology and Endoscopy Ltd | Health & social care | 2022 |
| Giant PEA Limited | Information & communication | 2008 |
| Gift Box Group Ltd | Financial services | 2025 |
| Gihon Consulting Ltd | Financial services | 2011 |
| Gilchrist Advisers Ltd | Professional & scientific | 2022 |
| Gildan (Builders)Limited | Construction | 1967 |
| Gildan Holdings Limited | Professional & scientific | 2010 |
| Gilson Engineering (Southampton) Limited | Manufacturing | 1995 |
| GJC Engineering Projects Ltd | Professional & scientific | 2022 |
| Glade Properties Ltd | Real estate | 2024 |
| Glamour Hideaway Ltd | Other services | 2025 |
| Glebe Garage Ltd | Wholesale & retail | 2025 |
| Glenmore Management (Fordingbridge) Limited | Real estate | 2006 |
| Global Circle Ltd | Health & social care | 2016 |
| Global Oilfield and Mining Supply Co Ltd | Wholesale & retail | 2019 |
| Global Remote Resources Limited | Professional & scientific | 2015 |
| Global Rock Challenge Limited | Health & social care | 1990 |
| Global Supplies and Logistics Ltd | Wholesale & retail | 2005 |
| GLOBALPROTECT360 Limited | Administrative & support | 2024 |
| GMW Silversmith Ltd | Manufacturing | 2019 |
| Go 2 Aviation Limited | Education | 2007 |
| Go Create Build Limited | Health & social care | 2016 |
| Go Create Care Hampshire Limited | Administrative & support | 2020 |
| Go Create Care Limited | Health & social care | 2016 |
| Go Create Construct Ltd | Other services | 2025 |
| Go Create Group Limited | Health & social care | 2016 |
| Go Inncognito Ltd | Hospitality | 2013 |
| Go Matilda (Australian Visas) Limited | Professional & scientific | 2000 |
| Gold Bar Tanning Beds Limited | Other services | 2025 |
| Gold Bar Tanning Limited | Other services | 2024 |
| Goldcrest Advisory Limited | Professional & scientific | 2024 |
| Golden Larch Contracting Limited | Construction | 1999 |
| Golden Larch Group Limited | Financial services | 2017 |
| Golden Larch Sales Limited | Construction | 2022 |
| Golden Thai Restaurants Ltd | Real estate | 2018 |
| Gondpur Estates Limited | Financial services | 2021 |
| Good Barbers Guide Limited | Other services | 1996 |
| Good Beauty Guide Limited | Other services | 2001 |
| Good Salon Guide Limited | Other services | 2004 |
| Good Wash Day Ltd | Wholesale & retail | 2021 |
| Goodacre Services Limited | Other services | 2006 |
| Goodyear Property Services Limited | Construction | 2013 |
| Gosling Orthopaedics Ltd | Health & social care | 2022 |
| GPD Golf Limited | Wholesale & retail | 2025 |
| Graestone Limited | Wholesale & retail | 2020 |
| Greatbridge Construction Limited | Construction | 1983 |
| Green by Nature Ltd | Wholesale & retail | 2006 |
| Green Mariner Ltd | Wholesale & retail | 2021 |