| Flying Raven Design Limited | Information & communication | 2024 |
| Flying Tiger Models Ltd. | Wholesale & retail | 2015 |
| FN Bloodstock Limited | Agriculture & fishing | 2016 |
| FN Racing Ltd | Agriculture & fishing | 2014 |
| FNB Group Ltd. | Administrative & support | 2008 |
| FOL (Berkshire) Limited | Professional & scientific | 2020 |
| FOL (Bristol) Limited | Wholesale & retail | 2023 |
| Folly Enterprises Limited | Extraterritorial | 2014 |
| Foot and Ankle UK Limited | Health & social care | 2012 |
| Football Card Collectors Events Limited | Administrative & support | 2025 |
| FOR Brothers & Sisters Ltd | Other services | 2019 |
| Forbidden Blonde Limited | Wholesale & retail | 2020 |
| Forerunner Clothing Ltd | Wholesale & retail | 2024 |
| Forever Wear Limited | Other services | 2012 |
| Form Commerce Limited | Information & communication | 2017 |
| Forza Media Ltd | Professional & scientific | 2024 |
| Fountain Lake Limited | Construction | 1993 |
| Four Frogs Ltd | Construction | 2011 |
| Four Seasons Solutions Limited | Professional & scientific | 1997 |
| Fox-West Ltd | Professional & scientific | 2015 |
| Fracarro (UK) Limited | Information & communication | 2003 |
| Fradjag Roofing Limited | Construction | 2003 |
| Fraser Evelyn Financial Planning Ltd | Professional & scientific | 2023 |
| Freddie Ford Ltd | Real estate | 2024 |
| Freemantle Brewing Limited | Manufacturing | 2024 |
| Freya Jones Ltd | Wholesale & retail | 2022 |
| Frimatec UK 10 Ltd | Construction | 2024 |
| Frla Ltd | Professional & scientific | 2010 |
| Frominvestments Limited | Real estate | 2021 |
| Fudar Limited | Manufacturing | 2023 |
| Full Installations Ltd | Construction | 2021 |
| G & G Products Limited | Manufacturing | 1994 |
| G a Holiday Lets Limited | Real estate | 2021 |
| G a Property Lets Limited | Real estate | 2024 |
| G Hall Contracting Ltd | Construction | 2013 |
| G Hobbs Developments Limited | Administrative & support | 2025 |
| G M Tyre Services Limited | Wholesale & retail | 2009 |
| G R Property Investments Ltd | Construction | 2005 |
| G Smith Groundworks Limited | Construction | 2006 |
| G.V.H. Costume Limited | Arts & recreation | 2012 |
| G12 Transport Ltd | Transport & logistics | 2022 |
| Galenos Limited | Professional & scientific | 2016 |
| GAM Consulting & Services Ltd | Professional & scientific | 2021 |
| Gann Solutions Limited | Administrative & support | 2010 |
| GAP Renovation Services Ltd | Construction | 2025 |
| Garden Wizard Services Limited | Administrative & support | 2013 |
| Gardner Aero Defence Solutions Limited | Professional & scientific | 2015 |
| GAS Smart Heating & Cooling Ltd | Extraterritorial | 2023 |
| GAS Smart Solutions Ltd | Construction | 2014 |
| Gawcott Diesel Services Limited | Wholesale & retail | 2022 |
| Gazmat Ltd | Wholesale & retail | 2026 |
| Gazzeria Limited | Hospitality | 2021 |
| GB Airlines Ltd | Professional & scientific | 2013 |
| GC Network Ltd | Wholesale & retail | 2025 |
| Gdsimons Ltd | Professional & scientific | 2024 |
| GE Electricals (BW) Limited | Construction | 2026 |
| GE123 Electricals Limited | Construction | 2009 |
| Geltich Ltd | Health & social care | 2014 |
| GEM Fabrication Limited | Manufacturing | 2024 |
| Geniead Ltd | Professional & scientific | 2025 |
| Genius Estate Limited | Real estate | 2022 |
| Geo-Integrity Limited | Professional & scientific | 2016 |
| Geoinfoscape Limited | Information & communication | 2013 |
| George Porritt Ltd | Professional & scientific | 2024 |
| Geothermique Limited | Manufacturing | 2008 |
| Ghrc Holdings Ltd | Financial services | 2024 |
| Gibraltar Airways Limited | Administrative & support | 2014 |
| GIN Bar 93 Limited | Wholesale & retail | 2019 |
| Give Analytics Limited | Professional & scientific | 2019 |
| Give Consultancy Limited | Professional & scientific | 2019 |
| Give Foundation | Health & social care | 2022 |
| Give Tech Limited | Information & communication | 2022 |
| Glass Displays Ltd | Wholesale & retail | 2011 |
| Glassmaker Ltd | Manufacturing | 2022 |
| Gleam and Shine Cleaning Ltd | Administrative & support | 2021 |
| Glenmorta Limited | Information & communication | 2016 |
| GLM Home Developments Ltd | Construction | 2025 |
| Global Joinery Sourcing Limited | Professional & scientific | 2016 |
| Global Wealth Management Solutions LLP | | 2010 |
| Globetec IT Limited | Information & communication | 2010 |
| Gmtk Productions Limited | Information & communication | 2018 |
| Go for IT Limited | Real estate | 2000 |
| Golborne Laylow Ltd | Other services | 2014 |
| Gold Rain Limited | Wholesale & retail | 2011 |
| Golden Ginkgo Arboriculture Limited | Construction | 2015 |
| Golden Spa and Nails Ltd | Other services | 2025 |
| Gourapur Limited | Health & social care | 2024 |
| GPM Bespoke Finishes Ltd | Construction | 2021 |
| GPS Apps Limited | Information & communication | 2019 |
| GPS Building Services Limited | Administrative & support | 2010 |
| GPS Transporters Ltd | Transport & logistics | 2025 |
| Grace Hands Care Limited | Health & social care | 2022 |
| Grace Tiney Homes Ltd | Health & social care | 2015 |
| Graceful House Limited | Health & social care | 2016 |
| Gracemade Innovations Ltd | Manufacturing | 2025 |
| Graff Developments Ltd | Construction | 2010 |
| Graham Warner Limited | Construction | 2014 |
| Gramuel Healthcare Limited | Administrative & support | 2021 |
| Grandad's Garage Ltd | Wholesale & retail | 2020 |
| Grange Rovers Ltd | Agriculture & fishing | 2024 |